Exemplos de Transform::Inverse em C++ (Cpp)

Exemplo n.º 1

Arquivo: Camera.cpp Projeto: davidsami/RayRay

Math::Transform Camera::PerspectiveTransform(double aFov, double n, double f, uint32_t xDim, uint32_t yDim){
    double x = xDim;
    double y = yDim;
    // Normalized screen dimensions
    double aspectRatio = y / x;

    Math::Transform s = Math::Transform::Scaling(2./x, -2./y, 1.);
    s *= Math::Transform::Scaling(1., aspectRatio, 1.);
    s *= Math::Transform::Translation(-x/2., -y/2., 0);

    // Perspective transform
    double scale = 1. / tan(M_PI*aFov/180./2.);
    Math::Transform pers = Math::Transform::Scaling(scale, scale, 1.);

    double m = f / (f - n);
    Eigen::Matrix4d t;
    t << 1,   0,   0,   0,
         0,   1,   0,   0,
         0,   0,   m,-n*m,
         0,   0,   1,   0;
    pers *= Math::Transform(t);

    return pers.Inverse() * s;
}