// Bresenham's line algorithm void DrawLine(int ax, int ay, int bx, int by, const Vec3 &color) { int dx = std::abs(bx - ax); int dy = std::abs(by - ay); bool steep = false; // 斜率绝对值是否大于1 if (dx < dy) { std::swap(ax, ay); std::swap(bx, by); std:...
500, 70, color(uint32_t(0x00000000)), img); // completed line algorithm for(int i = 0; i < 50; i++) { bresenham_4(rand() % 800, rand() % 600, rand() % 800, rand() % 600, color(uint32_t(0x00000000)), img); } ofstream f("3-1-line.ppm"); f << img; f.close...
Unity 官方的例子中已经给出了基于C#实现,代码如下: // http://ericw.ca/notes/bresenhams-line-algorithm-in-csharp.html public static IEnumerable<Vector2Int> GetPointsOnLine(Vector2Int p1, Vector2Int p2) { int x0 = p1.x; int y0 = p1.y; int x1 = p2.x; int y1 = p2.y; bool s...
{// Bresenham's line algorithmconstboolsteep=(fabs(y2-y1)>fabs(x2-x1));if(steep) { std::swap(x1, y1); std::swap(x2, y2); }if(x1>x2) { std::swap(x1, x2); std::swap(y1, y2); }constfloatdx=x2-x1;constfloatdy=fabs(y2-y1);floaterror=dx/2.0f;constintystep=(y1<y...
bresenham algorithm 全象限区域bresenham algorithm计算的python/c++实现 bresenham algorithm为计算机图形学中使用像素点显示直线的算法,算法使用整数运算,能大幅提升计算速度。最近概率栅格建图算法中涉及到直线绘制,故推导学习了下。 公式推导 主要是第一象限斜率小于1的区域的公式推导,其他区域可以转换到该区域计算。
} }intmain(){intgdriver=DETECT, gmode, error, x0, y0, x1, y1;initgraph(&gdriver, &gmode,"c:\\turboc3\\bgi"); cout<<"Enter co-ordinates of first point: "; cin>>x0>>y0; cout<<"Enter co-ordinates of second point: "; cin>>x1>>y1;drawline(x0, y0, x1, y1);return0...
// 来源:https://rosettacode.org/wiki/Bitmap/Bresenham%27s_line_algorithm#Cvoidline(intx0,inty0,intx1,inty1){intdx =abs(x1-x0), sx = x0<x1 ?1:-1;intdy =abs(y1-y0), sy = y0<y1 ?1:-1;interr = (dx>dy ? dx : -dy)/2, e2;for(;;){ ...
[AlgorithmStaff] Bresenham快速直线算法 操作系统:Windows8.1 显卡:Nivida GTX965M 开发工具:Unity2017.3 | NativeC 最近在学习 Unity tilemap Brush 自定义笔刷功能时候,看到其直线笔刷 LineBrush 是采用Bresenham算法实现,故借此机会在这里记录下学习过程,并在最后给出完整实现。
// Bresenham's line algorithm void draw_line(IMAGE *img, int x1, int y1, int x2, int y2, unsigned long c) { // 参数 c 为颜色值 int dx = abs(x2 - x1), dy = abs(y2 - y1), yy = 0; if (dx < dy) { yy = 1; ...
实验一:Bresenham’s Line Algorithm 不同象限不同斜率画法思路如下: (为滤清思路临时打的草稿) // === Computer Graphics Experiment #1 ===// | Bresenham's Line Drawing Algorithm |// | |// ===/// Requirement:// Implement a general Bresenham's Line Drawing Algorithm.// Only use GL_POINTS...