Method Move

trinity/Tr2ScalingTool.cpp:46–255

}

void Tr2ScalingTool::Move( int mouseX, int mouseY, int mouseXDelta, int mouseYDelta, Tr2Viewport& viewport, Matrix& viewMatrix, Matrix& projectionMatrix )
{
	Vector3 pos;
	Vector2 screenPos;
	Vector3 normal;
	Vector3 ray;
	Vector3 startPos;
	pos.x = m_localTransform._41;
	pos.y = m_localTransform._42;
	pos.z = m_localTransform._43;


	if( m_initialLength < 0.0 )
	{
		Vector3 vecResult;
		Vector3 vecCenterOfMass = TransformPoint( Vector3( 1, 0, 0 ), m_xBox, viewMatrix );
		float tmpInitialLength = Length( pos - vecCenterOfMass );
		// the initiallength could not have been set up...
		m_initialLength = tmpInitialLength;
	}


	// We might be in world or local
	Vector3 xAxis;
	Vector3 yAxis;
	Vector3 zAxis;
	GetBaseVectors( xAxis, yAxis, zAxis );

	// Get the location of the tool on screen
	PointToScreenCoordinates( pos, screenPos, viewport, viewMatrix, projectionMatrix );
	int curMouseX = int( screenPos.x );
	int curMouseY = int( screenPos.y );
	// Get the pick ray from the tools screen location
	ScreenCoordinatesToRay( curMouseX, curMouseY, ray, startPos, viewport, viewMatrix, projectionMatrix );

	// Get the normal for the best plane to use
	normal = GetDesiredPlaneNormal( ray, viewMatrix );
	Vector3 delta = MovePointOnPlane( curMouseX, curMouseY, curMouseX + mouseXDelta, curMouseY + mouseYDelta, pos, normal, viewport, viewMatrix, projectionMatrix );

	Vector3 translate;
	if( m_selectedAxis == "w" )
	{
		translate = delta;
	}
	else if( m_selectedAxis == "x" )
	{
		float scale = Dot( delta, xAxis );
		translate = xAxis * scale;
	}
	else if( m_selectedAxis == "y" )
	{
		float scale = Dot( delta, yAxis );
		translate = yAxis * scale;
	}
	else if( m_selectedAxis == "z" )
	{
		float scale = Dot( delta, zAxis );
		translate = zAxis * scale;