public void bend_distort(double a_max, double radius, string interp_method = "最近邻")
{
/*
* 弯曲变换，将结果赋予resultImg
* a_max: 最大旋转角度，角度制
* radius: 旋转半径
*/
resultImg = new myMat();
double a_max_arc = a_max * System.Math.PI / 180;
myMat.myCoor mid_p = new myMat.myCoor(inputImg.height / 2, inputImg.width / 2);
resultImg.init_bytes(inputImg.height, inputImg.width);
for (int i = 0; i < inputImg.height; i++)
{
for (int j = 0; j < inputImg.width; j++)
{
myMat.myCoor sourceCoor = bend_source_coor(new myMat.myCoor(i, j), mid_p, a_max_arc, radius);
Color c = interp(sourceCoor, interp_method);
resultImg.set_rgb(c, new myMat.myCoor(i, j));
}
}
}
public void ball_distort(double height, string interp_method = "最近邻")
{
/*
* 球形变换，将结果赋予resultImg
* height: 球形变换的高度参数
*/
resultImg = new myMat();
double height_abs = System.Math.Abs(height);
double m = System.Math.Sqrt(inputImg.height * inputImg.height + inputImg.width * inputImg.width) / 2;
double radius = (height * height + m * m) / 2 / height_abs;
myMat.myCoor mid_p = new myMat.myCoor(inputImg.height / 2, inputImg.width / 2);
resultImg.init_bytes(inputImg.height, inputImg.width);
for (int i = 0; i < inputImg.height; i++)
{
for (int j = 0; j < inputImg.width; j++)
{
myMat.myCoor sourceCoor = ball_source_coor(new myMat.myCoor(i, j), mid_p, radius, direction: (int)(height / height_abs));
Color c = interp(sourceCoor, interp_method);
resultImg.set_rgb(c, new myMat.myCoor(i, j));
}
}
}