mirror of
https://github.com/Tencent/ncnn.git
synced 2026-10-25 18:30:16 +08:00
nihui
49f3e1ea09
* drawing api * add drawing test * yuv420sp drawing * enable simpleocv in webassembly build
1528 lines
39 KiB
C++
1528 lines
39 KiB
C++
// Tencent is pleased to support the open source community by making ncnn available.
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//
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// Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
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//
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// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// https://opensource.org/licenses/BSD-3-Clause
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#include "mat.h"
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#include <ctype.h>
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#include "platform.h"
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namespace ncnn {
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#if NCNN_PIXEL_DRAWING
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#include "mat_pixel_drawing_font.h"
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void draw_rectangle_c1(unsigned char* pixels, int w, int h, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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return draw_rectangle_c1(pixels, w, h, w, rx, ry, rw, rh, color, thickness);
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}
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void draw_rectangle_c2(unsigned char* pixels, int w, int h, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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return draw_rectangle_c2(pixels, w, h, w * 2, rx, ry, rw, rh, color, thickness);
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}
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void draw_rectangle_c3(unsigned char* pixels, int w, int h, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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return draw_rectangle_c3(pixels, w, h, w * 3, rx, ry, rw, rh, color, thickness);
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}
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void draw_rectangle_c4(unsigned char* pixels, int w, int h, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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return draw_rectangle_c4(pixels, w, h, w * 4, rx, ry, rw, rh, color, thickness);
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}
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void draw_rectangle_c1(unsigned char* pixels, int w, int h, int stride, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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const unsigned char* pen_color = (const unsigned char*)&color;
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if (thickness == -1)
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{
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// filled
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for (int y = ry; y < ry + rh; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx; x < rx + rw; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x] = pen_color[0];
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}
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}
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return;
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}
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const int t0 = thickness / 2;
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const int t1 = thickness - t0;
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// draw top
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{
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for (int y = ry - t0; y < ry + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x] = pen_color[0];
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}
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}
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}
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// draw bottom
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{
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for (int y = ry + rh - t0; y < ry + rh + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x] = pen_color[0];
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}
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}
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}
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// draw left
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for (int x = rx - t0; x < rx + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x] = pen_color[0];
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}
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}
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// draw right
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for (int x = rx + rw - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x] = pen_color[0];
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}
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}
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}
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void draw_rectangle_c2(unsigned char* pixels, int w, int h, int stride, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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const unsigned char* pen_color = (const unsigned char*)&color;
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if (thickness == -1)
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{
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// filled
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for (int y = ry; y < ry + rh; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx; x < rx + rw; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 2 + 0] = pen_color[0];
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p[x * 2 + 1] = pen_color[1];
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}
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}
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return;
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}
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const int t0 = thickness / 2;
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const int t1 = thickness - t0;
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// draw top
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{
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for (int y = ry - t0; y < ry + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 2 + 0] = pen_color[0];
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p[x * 2 + 1] = pen_color[1];
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}
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}
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}
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// draw bottom
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{
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for (int y = ry + rh - t0; y < ry + rh + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 2 + 0] = pen_color[0];
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p[x * 2 + 1] = pen_color[1];
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}
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}
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}
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// draw left
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for (int x = rx - t0; x < rx + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 2 + 0] = pen_color[0];
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p[x * 2 + 1] = pen_color[1];
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}
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}
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// draw right
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for (int x = rx + rw - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 2 + 0] = pen_color[0];
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p[x * 2 + 1] = pen_color[1];
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}
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}
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}
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void draw_rectangle_c3(unsigned char* pixels, int w, int h, int stride, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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const unsigned char* pen_color = (const unsigned char*)&color;
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if (thickness == -1)
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{
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// filled
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for (int y = ry; y < ry + rh; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx; x < rx + rw; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 3 + 0] = pen_color[0];
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p[x * 3 + 1] = pen_color[1];
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p[x * 3 + 2] = pen_color[2];
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}
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}
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return;
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}
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const int t0 = thickness / 2;
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const int t1 = thickness - t0;
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// draw top
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{
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for (int y = ry - t0; y < ry + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 3 + 0] = pen_color[0];
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p[x * 3 + 1] = pen_color[1];
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p[x * 3 + 2] = pen_color[2];
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}
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}
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}
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// draw bottom
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{
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for (int y = ry + rh - t0; y < ry + rh + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 3 + 0] = pen_color[0];
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p[x * 3 + 1] = pen_color[1];
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p[x * 3 + 2] = pen_color[2];
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}
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}
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}
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// draw left
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for (int x = rx - t0; x < rx + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 3 + 0] = pen_color[0];
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p[x * 3 + 1] = pen_color[1];
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p[x * 3 + 2] = pen_color[2];
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}
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}
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// draw right
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for (int x = rx + rw - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 3 + 0] = pen_color[0];
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p[x * 3 + 1] = pen_color[1];
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p[x * 3 + 2] = pen_color[2];
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}
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}
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}
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void draw_rectangle_c4(unsigned char* pixels, int w, int h, int stride, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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{
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const unsigned char* pen_color = (const unsigned char*)&color;
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if (thickness == -1)
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{
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// filled
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for (int y = ry; y < ry + rh; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx; x < rx + rw; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 4 + 0] = pen_color[0];
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p[x * 4 + 1] = pen_color[1];
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p[x * 4 + 2] = pen_color[2];
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p[x * 4 + 3] = pen_color[3];
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}
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}
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return;
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}
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const int t0 = thickness / 2;
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const int t1 = thickness - t0;
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// draw top
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{
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for (int y = ry - t0; y < ry + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 4 + 0] = pen_color[0];
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p[x * 4 + 1] = pen_color[1];
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p[x * 4 + 2] = pen_color[2];
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p[x * 4 + 3] = pen_color[3];
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}
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}
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}
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// draw bottom
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{
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for (int y = ry + rh - t0; y < ry + rh + t1; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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for (int x = rx - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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p[x * 4 + 0] = pen_color[0];
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p[x * 4 + 1] = pen_color[1];
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p[x * 4 + 2] = pen_color[2];
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p[x * 4 + 3] = pen_color[3];
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}
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}
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}
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// draw left
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for (int x = rx - t0; x < rx + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 4 + 0] = pen_color[0];
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p[x * 4 + 1] = pen_color[1];
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p[x * 4 + 2] = pen_color[2];
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p[x * 4 + 3] = pen_color[3];
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}
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}
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// draw right
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for (int x = rx + rw - t0; x < rx + rw + t1; x++)
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{
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if (x < 0)
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continue;
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if (x >= w)
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break;
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for (int y = ry + t1; y < ry + rh - t0; y++)
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{
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if (y < 0)
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continue;
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if (y >= h)
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break;
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unsigned char* p = pixels + stride * y;
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p[x * 4 + 0] = pen_color[0];
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p[x * 4 + 1] = pen_color[1];
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p[x * 4 + 2] = pen_color[2];
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p[x * 4 + 3] = pen_color[3];
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}
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}
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}
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void draw_rectangle_yuv420sp(unsigned char* yuv420sp, int w, int h, int rx, int ry, int rw, int rh, unsigned int color, int thickness)
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|
{
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// assert w % 2 == 0
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// assert h % 2 == 0
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// assert rx % 2 == 0
|
|
// assert ry % 2 == 0
|
|
// assert rw % 2 == 0
|
|
// assert rh % 2 == 0
|
|
// assert thickness % 2 == 0
|
|
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned int v_y;
|
|
unsigned int v_uv;
|
|
unsigned char* pen_color_y = (unsigned char*)&v_y;
|
|
unsigned char* pen_color_uv = (unsigned char*)&v_uv;
|
|
pen_color_y[0] = pen_color[0];
|
|
pen_color_uv[0] = pen_color[1];
|
|
pen_color_uv[1] = pen_color[2];
|
|
|
|
unsigned char* Y = yuv420sp;
|
|
draw_rectangle_c1(Y, w, h, rx, ry, rw, rh, v_y, thickness);
|
|
|
|
unsigned char* UV = yuv420sp + w * h;
|
|
int thickness_uv = thickness == -1 ? thickness : std::max(thickness / 2, 1);
|
|
draw_rectangle_c2(UV, w / 2, h / 2, rx / 2, ry / 2, rw / 2, rh / 2, v_uv, thickness_uv);
|
|
}
|
|
|
|
static inline bool distance_lessequal(int x0, int y0, int x1, int y1, float r)
|
|
{
|
|
int dx = x0 - x1;
|
|
int dy = y0 - y1;
|
|
int q = dx * dx + dy * dy;
|
|
return q <= r * r;
|
|
}
|
|
|
|
static inline bool distance_inrange(int x0, int y0, int x1, int y1, float r0, float r1)
|
|
{
|
|
int dx = x0 - x1;
|
|
int dy = y0 - y1;
|
|
int q = dx * dx + dy * dy;
|
|
return q >= r0 * r0 && q < r1 * r1;
|
|
}
|
|
|
|
void draw_circle_c1(unsigned char* pixels, int w, int h, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
return draw_circle_c1(pixels, w, h, w, cx, cy, radius, color, thickness);
|
|
}
|
|
|
|
void draw_circle_c2(unsigned char* pixels, int w, int h, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
return draw_circle_c2(pixels, w, h, w * 2, cx, cy, radius, color, thickness);
|
|
}
|
|
|
|
void draw_circle_c3(unsigned char* pixels, int w, int h, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
return draw_circle_c3(pixels, w, h, w * 3, cx, cy, radius, color, thickness);
|
|
}
|
|
|
|
void draw_circle_c4(unsigned char* pixels, int w, int h, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
return draw_circle_c4(pixels, w, h, w * 4, cx, cy, radius, color, thickness);
|
|
}
|
|
|
|
void draw_circle_c1(unsigned char* pixels, int w, int h, int stride, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
if (thickness == -1)
|
|
{
|
|
// filled
|
|
for (int y = cy - (radius - 1); y < cy + radius; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1); x < cx + radius; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_lessequal(x, y, cx, cy, radius))
|
|
{
|
|
p[x] = pen_color[0];
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
for (int y = cy - (radius - 1) - t0; y < cy + radius + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1) - t0; x < cx + radius + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_inrange(x, y, cx, cy, radius - t0, radius + t1))
|
|
{
|
|
p[x] = pen_color[0];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_circle_c2(unsigned char* pixels, int w, int h, int stride, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
if (thickness == -1)
|
|
{
|
|
// filled
|
|
for (int y = cy - (radius - 1); y < cy + radius; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1); x < cx + radius; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_lessequal(x, y, cx, cy, radius))
|
|
{
|
|
p[x * 2 + 0] = pen_color[0];
|
|
p[x * 2 + 1] = pen_color[1];
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
for (int y = cy - radius - t0; y < cy + radius + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - radius - t0; x < cx + radius + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_inrange(x, y, cx, cy, radius - t0, radius + t1))
|
|
{
|
|
p[x * 2 + 0] = pen_color[0];
|
|
p[x * 2 + 1] = pen_color[1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_circle_c3(unsigned char* pixels, int w, int h, int stride, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
if (thickness == -1)
|
|
{
|
|
// filled
|
|
for (int y = cy - (radius - 1); y < cy + radius; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1); x < cx + radius; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_lessequal(x, y, cx, cy, radius))
|
|
{
|
|
p[x * 3 + 0] = pen_color[0];
|
|
p[x * 3 + 1] = pen_color[1];
|
|
p[x * 3 + 2] = pen_color[2];
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
for (int y = cy - radius - t0; y < cy + radius + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - radius - t0; x < cx + radius + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_inrange(x, y, cx, cy, radius - t0, radius + t1))
|
|
{
|
|
p[x * 3 + 0] = pen_color[0];
|
|
p[x * 3 + 1] = pen_color[1];
|
|
p[x * 3 + 2] = pen_color[2];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_circle_c4(unsigned char* pixels, int w, int h, int stride, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
if (thickness == -1)
|
|
{
|
|
// filled
|
|
for (int y = cy - (radius - 1); y < cy + radius; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1); x < cx + radius; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_lessequal(x, y, cx, cy, radius))
|
|
{
|
|
p[x * 4 + 0] = pen_color[0];
|
|
p[x * 4 + 1] = pen_color[1];
|
|
p[x * 4 + 2] = pen_color[2];
|
|
p[x * 4 + 3] = pen_color[3];
|
|
}
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
for (int y = cy - (radius - 1) - t0; y < cy + radius + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = cx - (radius - 1) - t0; x < cx + radius + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from cx cy
|
|
if (distance_inrange(x, y, cx, cy, radius - t0, radius + t1))
|
|
{
|
|
p[x * 4 + 0] = pen_color[0];
|
|
p[x * 4 + 1] = pen_color[1];
|
|
p[x * 4 + 2] = pen_color[2];
|
|
p[x * 4 + 3] = pen_color[3];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_circle_yuv420sp(unsigned char* yuv420sp, int w, int h, int cx, int cy, int radius, unsigned int color, int thickness)
|
|
{
|
|
// assert w % 2 == 0
|
|
// assert h % 2 == 0
|
|
// assert cx % 2 == 0
|
|
// assert cy % 2 == 0
|
|
// assert radius % 2 == 0
|
|
// assert thickness % 2 == 0
|
|
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned int v_y;
|
|
unsigned int v_uv;
|
|
unsigned char* pen_color_y = (unsigned char*)&v_y;
|
|
unsigned char* pen_color_uv = (unsigned char*)&v_uv;
|
|
pen_color_y[0] = pen_color[0];
|
|
pen_color_uv[0] = pen_color[1];
|
|
pen_color_uv[1] = pen_color[2];
|
|
|
|
unsigned char* Y = yuv420sp;
|
|
draw_circle_c1(Y, w, h, cx, cy, radius, v_y, thickness);
|
|
|
|
unsigned char* UV = yuv420sp + w * h;
|
|
int thickness_uv = thickness == -1 ? thickness : std::max(thickness / 2, 1);
|
|
draw_circle_c2(UV, w / 2, h / 2, cx / 2, cy / 2, radius / 2, v_uv, thickness_uv);
|
|
}
|
|
|
|
static inline bool distance_lessthan(int x, int y, int x0, int y0, int x1, int y1, float t)
|
|
{
|
|
int dx01 = x1 - x0;
|
|
int dy01 = y1 - y0;
|
|
int dx0 = x - x0;
|
|
int dy0 = y - y0;
|
|
|
|
float r = (float)(dx0 * dx01 + dy0 * dy01) / (dx01 * dx01 + dy01 * dy01);
|
|
|
|
if (r < 0 || r > 1)
|
|
return false;
|
|
|
|
float px = x0 + dx01 * r;
|
|
float py = y0 + dy01 * r;
|
|
float dx = x - px;
|
|
float dy = y - py;
|
|
float p = dx * dx + dy * dy;
|
|
return p < t;
|
|
}
|
|
|
|
void draw_line_c1(unsigned char* pixels, int w, int h, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
draw_line_c1(pixels, w, h, w, x0, y0, x1, y1, color, thickness);
|
|
}
|
|
|
|
void draw_line_c2(unsigned char* pixels, int w, int h, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
draw_line_c2(pixels, w, h, w * 2, x0, y0, x1, y1, color, thickness);
|
|
}
|
|
|
|
void draw_line_c3(unsigned char* pixels, int w, int h, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
draw_line_c3(pixels, w, h, w * 3, x0, y0, x1, y1, color, thickness);
|
|
}
|
|
|
|
void draw_line_c4(unsigned char* pixels, int w, int h, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
draw_line_c4(pixels, w, h, w * 4, x0, y0, x1, y1, color, thickness);
|
|
}
|
|
|
|
void draw_line_c1(unsigned char* pixels, int w, int h, int stride, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
int x_min = std::min(x0, x1);
|
|
int x_max = std::max(x0, x1);
|
|
int y_min = std::min(y0, y1);
|
|
int y_max = std::max(y0, y1);
|
|
|
|
for (int y = y_min - t0; y < y_max + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = x_min - t0; x < x_max + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from line
|
|
if (distance_lessthan(x, y, x0, y0, x1, y1, t1))
|
|
{
|
|
p[x] = pen_color[0];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_line_c2(unsigned char* pixels, int w, int h, int stride, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
int x_min = std::min(x0, x1);
|
|
int x_max = std::max(x0, x1);
|
|
int y_min = std::min(y0, y1);
|
|
int y_max = std::max(y0, y1);
|
|
|
|
for (int y = y_min - t0; y < y_max + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = x_min - t0; x < x_max + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from line
|
|
if (distance_lessthan(x, y, x0, y0, x1, y1, t1))
|
|
{
|
|
p[x * 2 + 0] = pen_color[0];
|
|
p[x * 2 + 1] = pen_color[1];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_line_c3(unsigned char* pixels, int w, int h, int stride, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
int x_min = std::min(x0, x1);
|
|
int x_max = std::max(x0, x1);
|
|
int y_min = std::min(y0, y1);
|
|
int y_max = std::max(y0, y1);
|
|
|
|
for (int y = y_min - t0; y < y_max + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = x_min - t0; x < x_max + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from line
|
|
if (distance_lessthan(x, y, x0, y0, x1, y1, t1))
|
|
{
|
|
p[x * 3 + 0] = pen_color[0];
|
|
p[x * 3 + 1] = pen_color[1];
|
|
p[x * 3 + 2] = pen_color[2];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_line_c4(unsigned char* pixels, int w, int h, int stride, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
const float t0 = thickness / 2.f;
|
|
const float t1 = thickness - t0;
|
|
|
|
int x_min = std::min(x0, x1);
|
|
int x_max = std::max(x0, x1);
|
|
int y_min = std::min(y0, y1);
|
|
int y_max = std::max(y0, y1);
|
|
|
|
for (int y = y_min - t0; y < y_max + t1; y++)
|
|
{
|
|
if (y < 0)
|
|
continue;
|
|
|
|
if (y >= h)
|
|
break;
|
|
|
|
unsigned char* p = pixels + stride * y;
|
|
|
|
for (int x = x_min - t0; x < x_max + t1; x++)
|
|
{
|
|
if (x < 0)
|
|
continue;
|
|
|
|
if (x >= w)
|
|
break;
|
|
|
|
// distance from line
|
|
if (distance_lessthan(x, y, x0, y0, x1, y1, t1))
|
|
{
|
|
p[x * 4 + 0] = pen_color[0];
|
|
p[x * 4 + 1] = pen_color[1];
|
|
p[x * 4 + 2] = pen_color[2];
|
|
p[x * 4 + 3] = pen_color[3];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void draw_line_yuv420sp(unsigned char* yuv420sp, int w, int h, int x0, int y0, int x1, int y1, unsigned int color, int thickness)
|
|
{
|
|
// assert w % 2 == 0
|
|
// assert h % 2 == 0
|
|
// assert x0 % 2 == 0
|
|
// assert y0 % 2 == 0
|
|
// assert x1 % 2 == 0
|
|
// assert y1 % 2 == 0
|
|
// assert thickness % 2 == 0
|
|
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned int v_y;
|
|
unsigned int v_uv;
|
|
unsigned char* pen_color_y = (unsigned char*)&v_y;
|
|
unsigned char* pen_color_uv = (unsigned char*)&v_uv;
|
|
pen_color_y[0] = pen_color[0];
|
|
pen_color_uv[0] = pen_color[1];
|
|
pen_color_uv[1] = pen_color[2];
|
|
|
|
unsigned char* Y = yuv420sp;
|
|
draw_line_c1(Y, w, h, x0, y0, x1, y1, v_y, thickness);
|
|
|
|
unsigned char* UV = yuv420sp + w * h;
|
|
int thickness_uv = thickness == -1 ? thickness : std::max(thickness / 2, 1);
|
|
draw_line_c2(UV, w / 2, h / 2, x0 / 2, y0 / 2, x1 / 2, y1 / 2, v_uv, thickness_uv);
|
|
}
|
|
|
|
void get_text_drawing_size(const char* text, int fontpixelsize, int* w, int* h)
|
|
{
|
|
*w = 0;
|
|
*h = 0;
|
|
|
|
const int n = strlen(text);
|
|
|
|
int line_w = 0;
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
char ch = text[i];
|
|
|
|
if (ch == '\n')
|
|
{
|
|
// newline
|
|
*w = std::max(*w, line_w);
|
|
*h += fontpixelsize * 2;
|
|
line_w = 0;
|
|
}
|
|
|
|
if (isprint(ch) != 0)
|
|
{
|
|
line_w += fontpixelsize;
|
|
}
|
|
}
|
|
|
|
*w = std::max(*w, line_w);
|
|
*h += fontpixelsize * 2;
|
|
}
|
|
|
|
void draw_text_c1(unsigned char* pixels, int w, int h, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
return draw_text_c1(pixels, w, h, w, text, x, y, fontpixelsize, color);
|
|
}
|
|
|
|
void draw_text_c2(unsigned char* pixels, int w, int h, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
return draw_text_c2(pixels, w, h, w * 2, text, x, y, fontpixelsize, color);
|
|
}
|
|
|
|
void draw_text_c3(unsigned char* pixels, int w, int h, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
return draw_text_c3(pixels, w, h, w * 3, text, x, y, fontpixelsize, color);
|
|
}
|
|
|
|
void draw_text_c4(unsigned char* pixels, int w, int h, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
return draw_text_c4(pixels, w, h, w * 4, text, x, y, fontpixelsize, color);
|
|
}
|
|
|
|
void draw_text_c1(unsigned char* pixels, int w, int h, int stride, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned char* resized_font_bitmap = new unsigned char[fontpixelsize * fontpixelsize * 2];
|
|
|
|
const int n = strlen(text);
|
|
|
|
int cursor_x = x;
|
|
int cursor_y = y;
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
char ch = text[i];
|
|
|
|
if (ch == '\n')
|
|
{
|
|
// newline
|
|
cursor_x = x;
|
|
cursor_y += fontpixelsize * 2;
|
|
}
|
|
|
|
if (isprint(ch) != 0)
|
|
{
|
|
const unsigned char* font_bitmap = mono_font_data[ch - ' '];
|
|
|
|
// draw resized character
|
|
resize_bilinear_c1(font_bitmap, 20, 40, resized_font_bitmap, fontpixelsize, fontpixelsize * 2);
|
|
|
|
for (int j = cursor_y; j < cursor_y + fontpixelsize * 2; j++)
|
|
{
|
|
if (j < 0)
|
|
continue;
|
|
|
|
if (j >= h)
|
|
break;
|
|
|
|
const unsigned char* palpha = resized_font_bitmap + (j - cursor_y) * fontpixelsize;
|
|
unsigned char* p = pixels + stride * j;
|
|
|
|
for (int k = cursor_x; k < cursor_x + fontpixelsize; k++)
|
|
{
|
|
if (k < 0)
|
|
continue;
|
|
|
|
if (k >= w)
|
|
break;
|
|
|
|
unsigned char alpha = palpha[k - cursor_x];
|
|
|
|
p[k] = (p[k] * (255 - alpha) + pen_color[0] * alpha) / 255;
|
|
}
|
|
}
|
|
|
|
cursor_x += fontpixelsize;
|
|
}
|
|
}
|
|
|
|
delete[] resized_font_bitmap;
|
|
}
|
|
|
|
void draw_text_c2(unsigned char* pixels, int w, int h, int stride, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned char* resized_font_bitmap = new unsigned char[fontpixelsize * fontpixelsize * 2];
|
|
|
|
const int n = strlen(text);
|
|
|
|
int cursor_x = x;
|
|
int cursor_y = y;
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
char ch = text[i];
|
|
|
|
if (ch == '\n')
|
|
{
|
|
// newline
|
|
cursor_x = x;
|
|
cursor_y += fontpixelsize * 2;
|
|
}
|
|
|
|
if (isprint(ch) != 0)
|
|
{
|
|
int font_bitmap_index = ch - ' ';
|
|
const unsigned char* font_bitmap = mono_font_data[font_bitmap_index];
|
|
|
|
// draw resized character
|
|
resize_bilinear_c1(font_bitmap, 20, 40, resized_font_bitmap, fontpixelsize, fontpixelsize * 2);
|
|
|
|
for (int j = cursor_y; j < cursor_y + fontpixelsize * 2; j++)
|
|
{
|
|
if (j < 0)
|
|
continue;
|
|
|
|
if (j >= h)
|
|
break;
|
|
|
|
const unsigned char* palpha = resized_font_bitmap + (j - cursor_y) * fontpixelsize;
|
|
unsigned char* p = pixels + stride * j;
|
|
|
|
for (int k = cursor_x; k < cursor_x + fontpixelsize; k++)
|
|
{
|
|
if (k < 0)
|
|
continue;
|
|
|
|
if (k >= w)
|
|
break;
|
|
|
|
unsigned char alpha = palpha[k - cursor_x];
|
|
|
|
p[k * 2 + 0] = (p[k * 2 + 0] * (255 - alpha) + pen_color[0] * alpha) / 255;
|
|
p[k * 2 + 1] = (p[k * 2 + 1] * (255 - alpha) + pen_color[1] * alpha) / 255;
|
|
}
|
|
}
|
|
|
|
cursor_x += fontpixelsize;
|
|
}
|
|
}
|
|
|
|
delete[] resized_font_bitmap;
|
|
}
|
|
|
|
void draw_text_c3(unsigned char* pixels, int w, int h, int stride, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned char* resized_font_bitmap = new unsigned char[fontpixelsize * fontpixelsize * 2];
|
|
|
|
const int n = strlen(text);
|
|
|
|
int cursor_x = x;
|
|
int cursor_y = y;
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
char ch = text[i];
|
|
|
|
if (ch == '\n')
|
|
{
|
|
// newline
|
|
cursor_x = x;
|
|
cursor_y += fontpixelsize * 2;
|
|
}
|
|
|
|
if (isprint(ch) != 0)
|
|
{
|
|
int font_bitmap_index = ch - ' ';
|
|
const unsigned char* font_bitmap = mono_font_data[font_bitmap_index];
|
|
|
|
// draw resized character
|
|
resize_bilinear_c1(font_bitmap, 20, 40, resized_font_bitmap, fontpixelsize, fontpixelsize * 2);
|
|
|
|
for (int j = cursor_y; j < cursor_y + fontpixelsize * 2; j++)
|
|
{
|
|
if (j < 0)
|
|
continue;
|
|
|
|
if (j >= h)
|
|
break;
|
|
|
|
const unsigned char* palpha = resized_font_bitmap + (j - cursor_y) * fontpixelsize;
|
|
unsigned char* p = pixels + stride * j;
|
|
|
|
for (int k = cursor_x; k < cursor_x + fontpixelsize; k++)
|
|
{
|
|
if (k < 0)
|
|
continue;
|
|
|
|
if (k >= w)
|
|
break;
|
|
|
|
unsigned char alpha = palpha[k - cursor_x];
|
|
|
|
p[k * 3 + 0] = (p[k * 3 + 0] * (255 - alpha) + pen_color[0] * alpha) / 255;
|
|
p[k * 3 + 1] = (p[k * 3 + 1] * (255 - alpha) + pen_color[1] * alpha) / 255;
|
|
p[k * 3 + 2] = (p[k * 3 + 2] * (255 - alpha) + pen_color[2] * alpha) / 255;
|
|
}
|
|
}
|
|
|
|
cursor_x += fontpixelsize;
|
|
}
|
|
}
|
|
|
|
delete[] resized_font_bitmap;
|
|
}
|
|
|
|
void draw_text_c4(unsigned char* pixels, int w, int h, int stride, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned char* resized_font_bitmap = new unsigned char[fontpixelsize * fontpixelsize * 2];
|
|
|
|
const int n = strlen(text);
|
|
|
|
int cursor_x = x;
|
|
int cursor_y = y;
|
|
for (int i = 0; i < n; i++)
|
|
{
|
|
char ch = text[i];
|
|
|
|
if (ch == '\n')
|
|
{
|
|
// newline
|
|
cursor_x = x;
|
|
cursor_y += fontpixelsize * 2;
|
|
}
|
|
|
|
if (isprint(ch) != 0)
|
|
{
|
|
const unsigned char* font_bitmap = mono_font_data[ch - ' '];
|
|
|
|
// draw resized character
|
|
resize_bilinear_c1(font_bitmap, 20, 40, resized_font_bitmap, fontpixelsize, fontpixelsize * 2);
|
|
|
|
for (int j = cursor_y; j < cursor_y + fontpixelsize * 2; j++)
|
|
{
|
|
if (j < 0)
|
|
continue;
|
|
|
|
if (j >= h)
|
|
break;
|
|
|
|
const unsigned char* palpha = resized_font_bitmap + (j - cursor_y) * fontpixelsize;
|
|
unsigned char* p = pixels + stride * j;
|
|
|
|
for (int k = cursor_x; k < cursor_x + fontpixelsize; k++)
|
|
{
|
|
if (k < 0)
|
|
continue;
|
|
|
|
if (k >= w)
|
|
break;
|
|
|
|
unsigned char alpha = palpha[k - cursor_x];
|
|
|
|
p[k * 4 + 0] = (p[k * 4 + 0] * (255 - alpha) + pen_color[0] * alpha) / 255;
|
|
p[k * 4 + 1] = (p[k * 4 + 1] * (255 - alpha) + pen_color[1] * alpha) / 255;
|
|
p[k * 4 + 2] = (p[k * 4 + 2] * (255 - alpha) + pen_color[2] * alpha) / 255;
|
|
p[k * 4 + 3] = (p[k * 4 + 3] * (255 - alpha) + pen_color[3] * alpha) / 255;
|
|
}
|
|
}
|
|
|
|
cursor_x += fontpixelsize;
|
|
}
|
|
}
|
|
|
|
delete[] resized_font_bitmap;
|
|
}
|
|
|
|
void draw_text_yuv420sp(unsigned char* yuv420sp, int w, int h, const char* text, int x, int y, int fontpixelsize, unsigned int color)
|
|
{
|
|
// assert w % 2 == 0
|
|
// assert h % 2 == 0
|
|
// assert x % 2 == 0
|
|
// assert y % 2 == 0
|
|
// assert fontpixelsize % 2 == 0
|
|
|
|
const unsigned char* pen_color = (const unsigned char*)&color;
|
|
|
|
unsigned int v_y;
|
|
unsigned int v_uv;
|
|
unsigned char* pen_color_y = (unsigned char*)&v_y;
|
|
unsigned char* pen_color_uv = (unsigned char*)&v_uv;
|
|
pen_color_y[0] = pen_color[0];
|
|
pen_color_uv[0] = pen_color[1];
|
|
pen_color_uv[1] = pen_color[2];
|
|
|
|
unsigned char* Y = yuv420sp;
|
|
draw_text_c1(Y, w, h, text, x, y, fontpixelsize, v_y);
|
|
|
|
unsigned char* UV = yuv420sp + w * h;
|
|
draw_text_c2(UV, w / 2, h / 2, text, x / 2, y / 2, std::max(fontpixelsize / 2, 1), v_uv);
|
|
}
|
|
|
|
#endif // NCNN_PIXEL_DRAWING
|
|
|
|
} // namespace ncnn
|