| public static unProject ( vec3 windowPos, CSharpGL.mat4 view, CSharpGL.mat4 proj, vec4 viewport ) : vec3 | ||
| windowPos | vec3 | The win. |
| view | CSharpGL.mat4 | The view. |
| proj | CSharpGL.mat4 | The proj. |
| viewport | vec4 | The viewport. |
| return | vec3 | |
public static vec3 unProject(vec3 windowPos, mat4 view, mat4 proj, vec4 viewport)
{
mat4 Inverse = glm.inverse(proj * view);
vec4 tmp = new vec4(windowPos, (1f));
tmp.x = (tmp.x - (viewport[0])) / (viewport[2]);
tmp.y = (tmp.y - (viewport[1])) / (viewport[3]);
tmp = tmp * (2f) - new vec4(1, 1, 1, 1);// after this, tmp is normalized device coordinate.
vec4 obj = Inverse * tmp;
obj /= obj.w;// after this, tmp is model coordinate.
return new vec3(obj);
}