//----------------------------------------------------------------//
USMatrix4x4 MOAIGfxDevice::GetWndToNormMtx () const {
USRect rect = this->mViewRect;
float hWidth = rect.Width () * 0.5f;
float hHeight = rect.Height () * 0.5f;
// Inv Wnd
USMatrix4x4 wndToNorm;
wndToNorm.Translate ( -hWidth - rect.mXMin, -hHeight - rect.mYMin, 0.0f );
USMatrix4x4 mtx;
mtx.Scale (( 1.0f / hWidth ), -( 1.0f / hHeight ), 1.0f );
wndToNorm.Append ( mtx );
return wndToNorm;
}
//----------------------------------------------------------------//
USMatrix4x4 MOAIGfxDevice::GetNormToWndMtx () const {
USRect rect = this->mViewRect;
float hWidth = rect.Width () * 0.5f;
float hHeight = rect.Height () * 0.5f;
// Wnd
USMatrix4x4 normToWnd;
normToWnd.Scale ( hWidth, -hHeight, 1.0f );
USMatrix4x4 mtx;
mtx.Translate ( hWidth + rect.mXMin, hHeight + rect.mYMin, 0.0f );
normToWnd.Append ( mtx );
return normToWnd;
}
//----------------------------------------------------------------//
USMatrix4x4 MOAIGfxDevice::GetWorldToWndMtx ( float xScale, float yScale ) const {
USMatrix4x4 worldToWnd;
USMatrix4x4 mtx;
USRect rect = this->GetViewRect ();
float hWidth = rect.Width () * 0.5f;
float hHeight = rect.Height () * 0.5f;
// viewproj
worldToWnd = this->GetViewProjMtx ();
// wnd
mtx.Scale ( hWidth * xScale, hHeight * yScale, 1.0f );
worldToWnd.Append ( mtx );
mtx.Translate ( hWidth + rect.mXMin, hHeight + rect.mYMin, 0.0f );
worldToWnd.Append ( mtx );
return worldToWnd;
}
//----------------------------------------------------------------//
USMatrix4x4 MOAIGfxDevice::GetWndToWorldMtx () const {
USMatrix4x4 wndToWorld;
USMatrix4x4 mtx;
USRect rect = this->GetViewRect ();
float hWidth = rect.Width () * 0.5f;
float hHeight = rect.Height () * 0.5f;
// Inv Wnd
wndToWorld.Translate ( -hWidth - rect.mXMin, -hHeight - rect.mYMin, 0.0f );
mtx.Scale (( 1.0f / hWidth ), -( 1.0f / hHeight ), 1.0f );
wndToWorld.Append ( mtx );
// inv viewproj
mtx = this->GetViewProjMtx ();
mtx.Inverse ();
wndToWorld.Append ( mtx );
return wndToWorld;
}