Point4::type Point4::DotProduct(Vector4 const& v) const
{
return (m_elements[0] * v.X())
+ (m_elements[1] * v.Y())
+ (m_elements[2] * v.Z())
+ (m_elements[3] * v.W());
}
void Shader::SetVector4(std::string name, Vector4 value)
{
int uloc = SIG_FindUniform(name);
if (uloc != -1) {
glUniform4fARB(uloc, value.X(), value.Y(), value.Z(), value.W());
} else {
SIG_LOG("Could not find uniform \"" << name << "\"");
}
}
void LightRenderNode::renderInternal() {
Quaternion* orientation;
Vector3 unitVector;
Vector3 rotated;
Vector4 vLightPosition;
Vector4 vLightDirection;
Vector3* pos;
GLuint lightNum = GL_LIGHT0 + getAndIncLightNumber();
switch(lightType) {
case LIGHT_DIRECTIONAL:
orientation = owner->getTransform()->getOrientation();
unitVector = Vector3(0.0f,0.0f,1.0f);
rotated = orientation->Rotate(unitVector);
vLightDirection.X() = -rotated.X();
vLightDirection.Y() = -rotated.Y();
vLightDirection.Z() = -rotated.Z();
vLightDirection.W() = 0.0f;
glEnable(lightNum);
glLightfv(lightNum, GL_POSITION, (float*)&vLightDirection);
break;
case LIGHT_POINT:
pos = owner->getTransform()->getPosition();
vLightPosition.X() = pos->X();
vLightPosition.Y() = pos->Y();
vLightPosition.Z() = pos->Z();
vLightPosition.W() = 1.0f;
glEnable(lightNum);
glLightfv(lightNum, GL_POSITION, (float*)&vLightPosition);
break;
case LIGHT_SPOT:
pos = owner->getTransform()->getPosition();
orientation = owner->getTransform()->getOrientation();
unitVector = Vector3(0.0f,0.0f,1.0f);
rotated = orientation->Rotate(unitVector);
vLightPosition.X() = pos->X();
vLightPosition.Y() = pos->Y();
vLightPosition.Z() = pos->Z();
vLightPosition.W() = 1.0f;
orientation = owner->getTransform()->getOrientation();
unitVector = Vector3(0.0f,0.0f,1.0f);
rotated = orientation->Rotate(unitVector);
vLightDirection.X() = rotated.X();
vLightDirection.Y() = rotated.Y();
vLightDirection.Z() = rotated.Z();
vLightDirection.W() = 0.0f;
glEnable(lightNum);
glLightf(lightNum, GL_SPOT_CUTOFF, 45.0);
glLightfv(lightNum, GL_POSITION, (float*)&vLightPosition);
glLightfv(lightNum, GL_SPOT_DIRECTION, (float*)&vLightDirection);
break;
}
glLightfv(lightNum, GL_AMBIENT, (float*)&ambient);
glLightfv(lightNum, GL_DIFFUSE, (float*)&diffuse);
glLightfv(lightNum, GL_SPECULAR, (float*)&specular);
}
