| public static perspectiveFov ( float fov, float width, float height, float zNear, float zFar ) : CSharpGL.mat4 | ||
| fov | float | The fov (in radians). |
| width | float | The width. |
| height | float | The height. |
| zNear | float | The z near. |
| zFar | float | The z far. |
| return | CSharpGL.mat4 | |
public static mat4 perspectiveFov(float fov, float width, float height, float zNear, float zFar)
{
if (width <= 0 || height <= 0 || fov <= 0)
throw new ArgumentOutOfRangeException();
var rad = fov;
var h = glm.cos((0.5f) * rad) / glm.sin((0.5f) * rad);
var w = h * height / width;
var result = new mat4(0);
result[0, 0] = w;
result[1, 1] = h;
result[2, 2] = -(zFar + zNear) / (zFar - zNear);
result[2, 3] = -(1f);
result[3, 2] = -((2f) * zFar * zNear) / (zFar - zNear);
return result;
}
