public void FillTriangle(Vertex v1, Vertex v2, Vertex v3)
{
Matrix4f screenSpaceTransform =
new Matrix4f().InitScreenSpaceTransform(backBuffer.Width/2, backBuffer.Height/2);
Vertex minYVert = v1.Transform(screenSpaceTransform).PerspectiveDivide();
Vertex midYVert = v2.Transform(screenSpaceTransform).PerspectiveDivide();
Vertex maxYVert = v3.Transform(screenSpaceTransform).PerspectiveDivide();
if(maxYVert.GetY() < midYVert.GetY())
{
Vertex temp = maxYVert;
maxYVert = midYVert;
midYVert = temp;
}
if(midYVert.GetY() < minYVert.GetY())
{
Vertex temp = midYVert;
midYVert = minYVert;
minYVert = temp;
}
if(maxYVert.GetY() < midYVert.GetY())
{
Vertex temp = maxYVert;
maxYVert = midYVert;
midYVert = temp;
}
float area = minYVert.TriangleAreaTimes2(maxYVert, midYVert);
int handedness = area >= 0 ? 1 : 0;
ScanConvertTriangle(minYVert, midYVert, maxYVert, handedness);
FillShape((int)minYVert.GetY(), (int)maxYVert.GetY());
}
private void RenderGame()
{
target.BeginRender();
target.Clear();
rotCounter += (float)timeDelta;
Matrix4f translation = new Matrix4f().InitTranslation(0.0f, 0.0f, 3.0f);
Matrix4f rotation = new Matrix4f().InitRotation(0.0f, rotCounter, 0.0f);
Matrix4f transform = projection.Mul(translation.Mul(rotation));
target.FillTriangle(maxYVert.Transform(transform), midYVert.Transform(transform), minYVert.Transform(transform));
target.EndRender();
Refresh();
}
public void FillTriangle(Vertex v1, Vertex v2, Vertex v3)
{
Matrix4f screenSpaceTransform =
new Matrix4f().InitScreenSpaceTransform(backBuffer.Width / 2, backBuffer.Height / 2);
Vertex minYVert = v1.Transform(screenSpaceTransform).PerspectiveDivide();
Vertex midYVert = v2.Transform(screenSpaceTransform).PerspectiveDivide();
Vertex maxYVert = v3.Transform(screenSpaceTransform).PerspectiveDivide();
if (maxYVert.GetY() < midYVert.GetY())
{
Vertex temp = maxYVert;
maxYVert = midYVert;
midYVert = temp;
}
if (midYVert.GetY() < minYVert.GetY())
{
Vertex temp = midYVert;
midYVert = minYVert;
minYVert = temp;
}
if (maxYVert.GetY() < midYVert.GetY())
{
Vertex temp = maxYVert;
maxYVert = midYVert;
midYVert = temp;
}
float area = minYVert.TriangleAreaTimes2(maxYVert, midYVert);
int handedness = area >= 0 ? 1 : 0;
ScanConvertTriangle(minYVert, midYVert, maxYVert, handedness);
FillShape((int)minYVert.GetY(), (int)maxYVert.GetY());
}
