Matrix4f Matrix4f::Scale(Vector3f vector)
{
Matrix4f scaledMatrix = Matrix4f().InitializeIdentity();
scaledMatrix.Set(0,0,vector.GetX());
scaledMatrix.Set(1,1,vector.GetY());
scaledMatrix.Set(2,2,vector.GetZ());
return ((*this) * scaledMatrix);
}
Matrix4f Matrix4f::Translate(Vector3f vector)
{
Matrix4f translatedMatrix = Matrix4f().InitializeIdentity();
translatedMatrix.Set(3,0,vector.GetX());
translatedMatrix.Set(3,1,vector.GetY());
translatedMatrix.Set(3,2,vector.GetZ());
return ((*this) * translatedMatrix);
}
ShadowCameraTransform DirectionalLight::CalcShadowCameraTransform(const Vector3f& mainCameraPos, const Quaternion& mainCameraRot) const
{
Vector3f resultPos = mainCameraPos + mainCameraRot.GetForward() * GetHalfShadowArea();
Quaternion resultRot = GetTransform().GetTransformedRot();
float worldTexelSize = (GetHalfShadowArea()*2)/((float)(1 << GetShadowInfo().GetShadowMapSizeAsPowerOf2()));
Vector3f lightSpaceCameraPos = resultPos.Rotate(resultRot.Conjugate());
lightSpaceCameraPos.SetX(worldTexelSize * floor(lightSpaceCameraPos.GetX() / worldTexelSize));
lightSpaceCameraPos.SetY(worldTexelSize * floor(lightSpaceCameraPos.GetY() / worldTexelSize));
resultPos = lightSpaceCameraPos.Rotate(resultRot);
return ShadowCameraTransform(resultPos, resultRot);
}
void Shader::SetUniformVector3f(const std::string& uniformName, const Vector3f& value) const
{
glUniform3f(m_shaderData->GetUniformMap().at(uniformName), value.GetX(), value.GetY(), value.GetZ());
}
void Renderer::SetUniformVector3f(unsigned int uniformLocation, const Vector3f& value)
{
glUniform3f(uniformLocation, value.GetX(), value.GetY(), value.GetZ());
}
void Shader::SetUniform(const std::string& name, const Vector3f& value)
{
glUniform3f(m_uniforms.at(name), value.GetX(), value.GetY(), value.GetZ());
}