const mat4 & Camera::viewProjectionInverted() const
{
if (m_dirty)
update();
if (!m_viewProjectionInverted.isValid())
m_viewProjectionInverted.setValue(inverse(viewProjection()));
return m_viewProjectionInverted.value();
}
void SceneBuffers::Draw()
{
rendererGL.ClearGLFlags();
Matrix3D MVP, viewMatrix, modelViewMatrix, modelMatrix, rotationMatrix,
translateMatrix, rotationMatrixX, rotationMatrixY, rotationMatrixZ,
modelToWorld, viewProjection;
Matrix3D::BuildLookAtMatrix(0.0, 1.0, -5.0, //camera position
0.0, 0.0, 0.0, //point that camera looks at
0.0, 1.0, 0.0, //camera up vector
viewMatrix);
//create identity matrices
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, modelMatrix);
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, translateMatrix);
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, rotationMatrix);
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, rotationMatrixX);
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, rotationMatrixY);
Matrix3D::MakeScaleMatrix(1.0, 1.0, 1.0, rotationMatrixZ);
//call each object in the list draw function
for (unsigned int i = 0; i < list.size(); i++)
{
float* tempSpace = list[i]->GetScale();
Matrix3D::MakeScaleMatrix(tempSpace[0], tempSpace[1], tempSpace[2], modelMatrix);
tempSpace = list[i]->GetPosition();
Matrix3D::MakeTranslateMatrix(tempSpace[0], tempSpace[1], tempSpace[2], translateMatrix);
//calculate rotation on all 3 axis
tempSpace = list[i]->GetRotation();
Matrix3D::MakeRotateMatrix(tempSpace[0], 1.0, 0.0, 0.0, rotationMatrixX);
Matrix3D::MakeRotateMatrix(tempSpace[1], 0.0, 1.0, 0.0, rotationMatrixY);
Matrix3D::MakeRotateMatrix(tempSpace[2], 0.0, 0.0, 1.0, rotationMatrixZ);
Matrix3D::MultMatrix(rotationMatrix, rotationMatrixX, rotationMatrixY);
Matrix3D::MultMatrix(rotationMatrix, rotationMatrix, rotationMatrixZ);
Matrix3D::MultMatrix(modelMatrix, rotationMatrix, modelMatrix);
Matrix3D::MultMatrix(modelMatrix, translateMatrix, modelMatrix); //calculate world position
Matrix3D::MultMatrix(modelToWorld, translateMatrix, modelMatrix); //calculate world position
Matrix3D::MultMatrix(modelViewMatrix, viewMatrix, modelMatrix); //model - view matrix
Matrix3D::MultMatrix(MVP, Engine::perspective, modelViewMatrix); //model - view - projection matrix
Matrix3D::MultMatrix(viewProjection, Engine::perspective, viewMatrix); //model - view - projection matrix
//bind CG program
rendererGL.BindProgram(vertexLightVS.GetProgram());
rendererGL.BindProgram(vertexLightFS.GetProgram());
//Enable VS & FS profiles
rendererGL.EnableProfile(rendererGL.GetVertexProfile());
rendererGL.EnableProfile(rendererGL.GetFragmentProfile());
//update shaders parameters
vertexLightVS.UpdateModelViewMatrix(MVP());
vertexLightVS.UpdateMatrixModelWorld(modelToWorld());
vertexLightVS.UpdateMatrixViewProj(viewProjection());
vertexLightVS.UpdateLightPosition(lightPos);
if (i != 1)
vertexLightFS.SetDecalMap(textureManager.getTextureId("../Images/bricks_diffuse.bmp"));
else
vertexLightFS.SetDecalMap(textureManager.getTextureId("../Images/bricks_normal.bmp"));
//update shaders
vertexLightVS.UpdateParameters();
vertexLightFS.UpdateParameters();
list[i]->DrawBuffers();
//disable Vertex CGprofile
rendererGL.DisableProfile(rendererGL.GetVertexProfile());
rendererGL.DisableProfile(rendererGL.GetFragmentProfile());
}
}
