public void printPolyZ(RPolygon pIn)
{
if (pIn.isEpsilonGeometry())
{
return;
}
RPolygon polygon = pIn.reSort();
if (polygon.isOffScreen(this.pixelLeftTop, this.pixelRightBottom))
{
return;
}
if (polygon.isFlatTop())
{
printPolyFlatTopZ(polygon);
}
else
{
if (polygon.isFlatBottom())
{
printPolyFlatBottomZ(polygon);
}
else
{
RPolygon p1 = polygon.getBottomFlat();
printPolyFlatBottomZ(p1);
RPolygon p2 = polygon.getTopFlat();
printPolyFlatTopZ(p2);
}
}
}
public void printPolyZ(RPolygon pIn)
{
RPolygon polygon = pIn.reSort();
float area = polygon.screenArea();
float oneOverArea = 1.0f / area;
Vec3f v0 = polygon.v0;
Vec3f v1 = polygon.v1;
Vec3f v2 = polygon.v2;
if (polygon.isEpsilonGeometry())
{
return;
}
if (polygon.isOffScreen(this.pixelLeftTop, this.pixelRightBottom))
{
return;
}
if (area < 1.0f && area > -1.0f)
{
return;
}
Vec2i leftTop = polygon.topLeft();
Vec2i bottomRight = polygon.bottomRight();
if (leftTop.x < 0)
{
leftTop.x = 0;
}
if (leftTop.y < 0)
{
leftTop.y = 0;
}
if (bottomRight.x >= pixelWidth)
{
bottomRight.x = pixelWidth - 1;
}
if (bottomRight.y >= pixelHeight)
{
bottomRight.y = pixelHeight - 1;
}
for (int x = leftTop.x; x < bottomRight.x; x++)
{
for (int y = leftTop.y; y < bottomRight.y; y++)
{
Vec2f p = new Vec2f(x, y);
Vec3f w = polygon.lambdas(p);
if ((w.x >= 0.0f && w.y >= 0.0f && w.z >= 0.0f) || (w.x <= 0.0f && w.y <= 0.0f && w.z <= 0.0f))
{
w *= oneOverArea;
float z = 1.0f / (v0.z * w.x + v1.z * w.y + v2.z * w.z);
Vec2f UV = new Vec2f(
(polygon.vertex0.textureCoordinates.x * w.x + polygon.vertex1.textureCoordinates.x * w.y + polygon.vertex2.textureCoordinates.x * w.z) * z,
(polygon.vertex0.textureCoordinates.y * w.x + polygon.vertex1.textureCoordinates.y * w.y + polygon.vertex2.textureCoordinates.y * w.z) * z
);
Vec4f texColor = polygon.texture.sampleTextureA(UV);
printPixelZ(x, y, z, new Vec3f(texColor));
}
}
}
}
