C++ (Cpp) ZLMatrix4x4::Append 예제들

예제 #1

파일: MOAIScissorRect.cpp 프로젝트: Chenhx/moai-dev

//----------------------------------------------------------------//
ZLRect MOAIScissorRect::GetScissorRect ( const ZLMatrix4x4& worldToWndMtx ) const {

	ZLVec3D vtx3D [ 4 ];

	vtx3D [ 0 ].mX = this->mRect.mXMin;
	vtx3D [ 0 ].mY = this->mRect.mYMin;
	vtx3D [ 0 ].mZ = 0.0f;

	vtx3D [ 1 ].mX = this->mRect.mXMin;
	vtx3D [ 1 ].mY = this->mRect.mYMax;
	vtx3D [ 1 ].mZ = 0.0f;
	
	vtx3D [ 2 ].mX = this->mRect.mXMax;
	vtx3D [ 2 ].mY = this->mRect.mYMax;
	vtx3D [ 2 ].mZ = 0.0f;

	vtx3D [ 3 ].mX = this->mRect.mXMax;
	vtx3D [ 3 ].mY = this->mRect.mYMin;
	vtx3D [ 3 ].mZ = 0.0f;

	ZLMatrix4x4 mtx;
	
	mtx.Init ( this->GetLocalToWorldMtx ());
	mtx.Append ( worldToWndMtx );
	
	mtx.Project ( vtx3D [ 0 ]);
	mtx.Project ( vtx3D [ 1 ]);
	mtx.Project ( vtx3D [ 2 ]);
	mtx.Project ( vtx3D [ 3 ]);
	
	ZLRect scissorRect;

	scissorRect.Init ( vtx3D [ 0 ]);
	scissorRect.Grow ( vtx3D [ 1 ]);
	scissorRect.Grow ( vtx3D [ 2 ]);
	scissorRect.Grow ( vtx3D [ 3 ]);

	if ( this->mScissorRect ) {
		ZLRect parentRect = this->mScissorRect->GetScissorRect ( worldToWndMtx );
		parentRect.Clip ( scissorRect );
	}

	return scissorRect;
}