VCRA-SZCZERBACKI-PointBasedRendering/ssMatrixFactory.cpp

#include "ssMatrix.hpp"

using namespace SS;


Matrix4x4 MatrixFactory::rotateX        (float angle)
{
        float s = (float)::sin(angle);
        float c = (float)::cos(angle);
        float o = 1.f;
        float z = 0.f;

        Matrix4x4       m;      //calls ident()
        m.setColumn(0,Vector4(o, z, z, 0));
        m.setColumn(1,Vector4(z, c,-s, 0));
        m.setColumn(2,Vector4(z, s, c ,0));

        return m;
}


Matrix4x4 MatrixFactory::rotateY        (float angle)
{
        float s = (float)::sin(angle);
        float c = (float)::cos(angle);
        float o = 1.f;
        float z = 0.f;

        Matrix4x4       m;      //calls ident()
        m.setColumn(0,Vector4(c, z, s, 0));
        m.setColumn(1,Vector4(z, o, z, 0));
        m.setColumn(2,Vector4(-s,z, c ,0));

        return m;
}


Matrix4x4 MatrixFactory::rotateZ        (float angle)
{
        float s = (float)::sin(angle);
        float c = (float)::cos(angle);
        float o = 1.f;
        float z = 0.f;

        Matrix4x4       m;      //calls ident()
        m.setColumn(0,Vector4(c,-s, z, 0));
        m.setColumn(1,Vector4(s, c, z, 0));
        m.setColumn(2,Vector4(z, z, o, 0));

        return m;
}

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