public void ScanConvertLine(Vertex minYVert, Vertex maxYVert, int whichSide)
{
int yStart = (int)minYVert.GetY();
int yEnd = (int)maxYVert.GetY();
int xStart = (int)minYVert.GetX();
int xEnd = (int)maxYVert.GetX();
int yDist = yEnd - yStart;
int xDist = xEnd - xStart;
if (yDist <= 0)
{
return;
}
float xStep = (float)xDist / (float)yDist;
float curX = (float)xStart;
for (int j = yStart; j < yEnd; j++)
{
m_scanBuffer[j * 2 + whichSide] = (int)curX;
curX += xStep;
}
}
public float TriangleAreaTimes2(Vertex b, Vertex c)
{
float x1 = b.GetX() - m_pos.GetX();
float y1 = b.GetY() - m_pos.GetY();
float x2 = c.GetX() - m_pos.GetX();
float y2 = c.GetY() - m_pos.GetY();
return (x1 * y2 - x2 * y1);
}
public float TriangleAreaTimes2(Vertex b, Vertex c)
{
float x1 = b.GetX() - m_pos.GetX();
float y1 = b.GetY() - m_pos.GetY();
float x2 = c.GetX() - m_pos.GetX();
float y2 = c.GetY() - m_pos.GetY();
return(x1 * y2 - x2 * y1);
}
public void ScanConvertLine(Vertex minYVert, Vertex maxYVert, int whichSide)
{
int yStart = (int)minYVert.GetY();
int yEnd = (int)maxYVert.GetY();
int xStart = (int)minYVert.GetX();
int xEnd = (int)maxYVert.GetX();
int yDist = yEnd - yStart;
int xDist = xEnd - xStart;
if(yDist <= 0)
{
return;
}
float xStep = (float)xDist/(float)yDist;
float curX = (float)xStart;
for(int j = yStart; j < yEnd; j++)
{
m_scanBuffer[j * 2 + whichSide] = (int)curX;
curX += xStep;
}
}
