I have code to create a simple square grid using linestrips which works perfectly.
I then tried to create the same thing using triangles and i get a blank screen.
very strange. the problem is that the code is so simple i can’t figure out that i’m doing something wrong. My guess is that i’m doing something wrong in the set-up that should be different from using linestrips vs triangles, but i’m unsure which code to include, so let’s start here.
Keep in mind that other than returning a different primitive the code is exactly the same. i simply add the returned primitive as shown here (notice that i literally switch the commenting to go between the two versions).
geom = Geom(array)
.
.
.
# prim = self.create_linestrips(square)
prim = self.create_triangles(square)
print(prim)
geom.add_primitive(prim)
the GeomTriangles generator.
The indexes are the four corners of a square in CCW order, i.e. indexes[0] is the lower right hand corner of the square.
Notice that i am only creating one triangle per primitive right now.
n1 = int(indexes[0])
n2 = int(indexes[1])
n3 = int(indexes[2])
n4 = int(indexes[3])
print(n1, n2, n3, n4)
prim = GeomTriangles(Geom.UHStatic)
# prim.add_vertices(n1, n2, n3)
# prim.add_vertices(n1, n3, n4)
prim.add_vertex(n1)
prim.add_vertex(n3)
prim.add_vertex(n2)
prim.close_primitive()
return prim