对任意三角形或平行四边形对任意轴y=ax+b做对称

人机接口与计算机图形学大作业人机接口与计算机图形学大作业 课程名称 人机接口与计算机图形学 学院名称 计算机工程学院 专 业 计算机科学与技术 班 级 xxxxxxx 学 号 xxxxxxxx 姓 名 xxxxx 教师姓名 xxxxx 学 分 3 成 绩 2014 年 5 月 JIANGSU UNIVERSITY OF TECHNOLOGY 对任意三角形或平行四边形对任意轴对任意三角形或平行四边形对任意轴 y ax b 做对称 反射 变换 做对称 反射 变换 1 程序 include include include using namespace std void polygon void Middle Bresenham int int int int void move to zero b void axis of symmetry void positive rotate void reverse rotate void give change to x direction void recovery int ax 100000 ay 100000 cx 100000 cy 100000 int length 0 temp temp1 int max x min x int a b int main polygon move to zero b positive rotate give change to x direction reverse rotate recovery return 0 void recovery ofstream out d polygon symmetry6 txt out x for int i 0 i length i out ax i out ax i 1 out endl out y for int j 0 j length j out ay j b out ay j 1 b endl out plot x y endl out hold on endl out x1 for i temp i temp1 i out ax i out ax i 1 out endl out y1 for j temp j temp1 j out ay j b out ay j 1 b endl out plot x1 y1 endl out hold on endl out x2 for i 0 i length i out cx i out cx i 1 out endl out y2 for j 0 j length j out cy j out cy j 1 endl out plot x2 y2 endl void reverse rotate ofstream out d polygon symmetry5 txt out x int bx 100000 for int i 0 i length i bx i ax i ax i ax i cos atan a ay i sin atan a out ax i out ax i 1 out endl out y for int j 0 j length j ay j bx j sin atan a ay j cos atan a out ay j out ay j 1 endl out plot x y endl out hold on endl out x1 for i temp i temp1 i bx i ax i ax i ax i cos atan a ay i sin atan a out ax i out ax i 1 out endl out y1 for j temp j temp1 j ay j bx j sin atan a ay j cos atan a out ay j out ay j 1 endl out plot x1 y1 endl void give change to x direction ofstream out d polygon symmetry4 txt out x for int i 0 i length i out ax i out ax i 1 out endl out y for int j 0 j length j ay j ay j out ay j out ay j 1 endl out plot x y endl out hold on endl out x1 for i temp i temp1 i out ax i out ax i 1 out endl out y1 for j temp j temp1 j ay j ay j out ay j out ay j 1 endl out plot x1 y1 endl void positive rotate ofstream out d polygon symmetry3 txt out x int bx 100000 for int i 0 i length i bx i ax i ax i ax i cos atan a ay i sin atan a out ax i out ax i 1 out endl out y for int j 0 j length j ay j bx j sin atan a ay j cos atan a out ay j out ay j 1 endl out plot x y endl out hold on endl out x1 for i temp i temp1 i bx i ax i ax i ax i cos atan a ay i sin atan a out ax i out ax i 1 out endl out y1 for j temp j temp1 j ay j bx j sin atan a ay j cos atan a out ay j out ay j 1 endl out plot x1 y1 endl void move to zero b ofstream out d polygon symmetry2 txt out x for int i 0 i length i out ax i out ax i 1 out endl out y for int j 0 j length j ay j b out ay j out ay j 1 endl out plot x y endl out hold on endl out x1 for i temp i temp1 i out ax i out ax i 1 out endl out y1 for j temp j temp1 j ay j b out ay j out ay j 1 endl out plot x1 y1 endl void axis of symmetry cout 输入对称轴 y ax b 中 a 和 b 两个常数 a b min x 400 max x 400 Middle Bresenham min x a min x b max x a max x b void polygon int n cout 输入想要生成多边形的边数 n cout 按多边形的顺时针方向输入顶点坐标 point x point y tempx point x tempy point y max x min x point x for int i 1 i point x point y if point x max x max x point x if point x min x min x point x Middle Bresenham temp x temp y point x point y Middle Bresenham point x point y tempx tempy ofstream out d polygon symmetry1 txt out x for i 0 i length i cx i ax i out ax i out tempx out endl out y for int j 0 j length j cy j ay j out ay j out tempy endl out plot x y endl out hold on endl temp length axis of symmetry out x1 for i temp i length i out ax i out ax i 1 out endl out y1 for j temp j length j out ay j out ay j 1 endl out plot x1 y1 x1 1 1 int s2 y2 y1 1 1 bool interchange false if dy dx int temp dx dx dy dy temp interchange true int p 2 dy dx for int i 0 i 0 if interchange y s2 else x s1 p 2 dx if interchange x s1 else y s2 p 2 dy 2 步骤 A 输入一个平行四边形的四个坐标 100 150 250 400 750 400 600 150 B 用中点 Bresenham 算法 每两个点生成一条直线 C 输入要生成的多边形的边数 顶点坐标 任意轴的参数设定 a b 的取值 a b 的取值为 5 520 对 a b 数值的设定为