Merge pull request #24 from dipsywong98/fix/overlay-bug

Fix/overlay bug

ImpressionistDoc.cpp

@@ -140,7 +140,7 @@ void ImpressionistDoc::swapContent()
 	m_ucPainting = m_ucBitmap;
 	m_ucBitmap = temp;
 	m_ucOriginal = temp;
-	memcpy(m_ucBackup, m_ucPainting, m_nWidth*m_nHeight * 3);
+	//memcpy(m_ucBackup, m_ucPainting, m_nWidth*m_nHeight * 3);
 	m_pUI->m_origView->refresh();
 	m_pUI->m_paintView->refresh();
 }

ImpressionistDoc.h

@@ -75,6 +75,7 @@ class ImpressionistDoc
 
 	unsigned char* m_ucHistory; //for undo
 	unsigned char* m_ucAnother; //for another image
+	unsigned char *m_ucBackup = NULL;
 	int m_alphaMapWidth;
 	int m_alphaMapHeight;
 

LineBrush.cpp

@@ -85,23 +85,23 @@ void LineBrush::BrushEnd(const Point source, const Point target)
 
 void LineBrush::RightBegin(const Point source, const Point target)
 {
-	start = source;
+	start = target;
 }
 
 void LineBrush::RightMove(const Point source, const Point target)
 {
 	glColor3f(1, 0, 0);
 	glBegin(GL_LINES);
 	glVertex2d(start.x, start.y);
-	glVertex2d(source.x, source.y);
+	glVertex2d(target.x, target.y);
 	glEnd();
 }
 
 void LineBrush::RightEnd(const Point source, const Point target)
 {
 	ImpressionistDoc* pDoc = GetDocument();
 	ImpressionistUI* dlg = pDoc->m_pUI;
-	int angle = static_cast<int>(radToDeg(atan2(source.y - start.y, source.x - start.x)));
+	int angle = static_cast<int>(radToDeg(atan2(target.y - start.y, target.x - start.x)));
 	dlg->setLineAngle(angle);
 }