#include "stdafx.h"
#include "TransformMotiveGraphDrawer.h"

TransformMotiveGraphDrawer::TransformMotiveGraphDrawer()
	:m_pSIMGDrawer(NULL),
	m_trackerTransform(NULL)
{
	memset(&m_boundPoints, 0, sizeof(m_boundPoints));
	m_boundColor = RGB(0, 153, 255);
}

void TransformMotiveGraphDrawer::SetSIMGDrawer(SelectedItemMotionGraphDrawer * drawer)
{
	m_pSIMGDrawer = drawer;
}

void TransformMotiveGraphDrawer::SetBoundRect(CRect & rect)
{
	m_boundRect = rect;
}

void TransformMotiveGraphDrawer::CopyMatrix(Gdiplus::Matrix * matrix)
{
	delete m_matrix;
	if (matrix)
		m_matrix = matrix->Clone();
	else
		m_matrix = NULL;
}

 void TransformMotiveGraphDrawer::FirstDraw(CDC * pDC, Gdiplus::Matrix * matrix, int mouseX, int mouseY)
{
}

void TransformMotiveGraphDrawer::Draw(CDC * pDC, Gdiplus::Matrix * matrix, int mouseX, int mouseY)
{
}

void TransformMotiveGraphDrawer::LButtonDown(int mouseX, int mouseY)
{

}

void TransformMotiveGraphDrawer::Erease(CDC * pDC)
{
}

void TransformMotiveGraphDrawer::DrawBoundShape(CDC * pDC)
{
	TranslateBoundRect();

	int nOldRop = pDC->SetROP2(R2_NOTXORPEN);
	CPen pen(PS_SOLID, 0, m_boundColor);
	CGdiObject * pOldPen = pDC->SelectObject(&pen);
	
	pDC->Polygon(m_boundPoints, 4);

	 pDC->SelectObject(pOldPen);
	pDC->SetROP2(nOldRop);
}

void TransformMotiveGraphDrawer::TranslateBoundRect()
{
	//角点与索引的对应关系
	// 0----------1
	// |          |
	// |          |
	// 3----------2
	Gdiplus::Point cornerPts[4];
	cornerPts[0].X = cornerPts[3].X = m_boundRect.left;
	cornerPts[0].Y = cornerPts[1].Y = m_boundRect.top;
	cornerPts[1].X = cornerPts[2].X = m_boundRect.right;
	cornerPts[2].Y = cornerPts[3].Y = m_boundRect.bottom;

	m_matrix->TransformPoints(cornerPts, 4);

	m_boundPoints[0].x = cornerPts[0].X;
	m_boundPoints[0].y = cornerPts[0].Y;
	m_boundPoints[1].x = cornerPts[1].X;
	m_boundPoints[1].y = cornerPts[1].Y;
	m_boundPoints[2].x = cornerPts[2].X;
	m_boundPoints[2].y = cornerPts[2].Y;
	m_boundPoints[3].x = cornerPts[3].X;
	m_boundPoints[3].y = cornerPts[3].Y;
}