// http://www.sunshine2k.de/coding/java/TriangleRasterization/TriangleRasterization.html#sunbresenhamarticle
private static void fillBottomFlatTriangle(MUVVertex v1, MUVVertex v2, MUVVertex v3, Texture2D texture)
{
Debug.Log ("fillBottomFlatTriangle " + v1.ToString()+ v2.ToString()+v3.ToString());
float width = (float)texture.width;
float invslope1 = (v2.UV.x - v1.UV.x) / (v2.UV.y - v1.UV.y);
float invslope2 = (v3.UV.x - v1.UV.x) / (v3.UV.y - v1.UV.y);
float curx1 = v1.UV.x;
float curx2 = v1.UV.x;
for (float scanlineY = v1.UV.y; scanlineY <= v2.UV.y; scanlineY++)
{
DrawScanline(new Vector2(curx1 * width, scanlineY* width), new Vector2( curx2* width, scanlineY* width), texture);
curx1 += invslope1;
curx2 += invslope2;
}
}
// http://www.sunshine2k.de/coding/java/TriangleRasterization/TriangleRasterization.html#sunbresenhamarticle
private static void fillTopFlatTriangle(MUVVertex v1, MUVVertex v2, MUVVertex v3, Texture2D texture)
{
float width = (float)texture.width;
float invslope1 = (v3.UV.x - v1.UV.x) / (v3.UV.y - v1.UV.y);
float invslope2 = (v3.UV.x - v2.UV.x) / (v3.UV.y - v2.UV.y);
float curx1 = v3.UV.x;
float curx2 = v3.UV.x;
for (int scanlineY = (int)v3.UV.y; scanlineY > (int)v1.UV.y; scanlineY--)
{
curx1 -= invslope1;
curx2 -= invslope2;
DrawScanline(new Vector2(curx1* width, scanlineY* width), new Vector2( curx2* width, scanlineY* width), texture);
}
}
public MVertex(Vector3 position, Vector3 normal, Vector3 uv)
{
this.position = position;
this.normal = normal;
this.uv = new MUVVertex(new Vector2(uv.x,uv.y));
this.parents = new List<MTriangle>();
}
private void AddEdge(MUVVertex from, MUVVertex to)
{
MUVEdge edge = new MUVEdge(from,to);
if (parent.UVEdges.Contains(edge))
{
int index = parent.UVEdges.IndexOf(edge);
if (parent.UVEdges[index].Parents.Contains(this) == false) parent.UVEdges[index].Parents.Add(this);
this.edges.Add(edge);
}
else
{
edge.Parents.Add(this);
this.edges.Add(edge);
parent.UVEdges.Add(edge);
}
}
public bool Contains(MUVVertex uvVertex)
{
if (from == uvVertex || to == uvVertex)
return true;
else
return false;
}
public MUVEdge(MUVVertex from, MUVVertex to)
{
this.from = from;
this.to = to;
this.parents = new List<MUVTriangle>();
}