Implement triangles.

1 files changed, 22 insertions, 0 deletions

diff --git a/dimension/tests/demo.dmnsn b/dimension/tests/demo.dmnsn
index a85a96e..550c57a 100644
--- a/dimension/tests/demo.dmnsn
+++ b/dimension/tests/demo.dmnsn
@@ -17,6 +17,9 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>. #
 #########################################################################
 
+# Background
+background = Clear
+
 # Camera
 camera = PerspectiveCamera(location = (0, 0.25, -4),
                            look_at   = 0)
@@ -97,6 +100,24 @@ torii = Union(
 
 spike = Union([arrow, torii]).transform(rotate(-45*X))
 
+strip_textures = [
+  Texture(pigment = Red),
+  Texture(pigment = Orange),
+  Texture(pigment = Yellow),
+]
+strip_triangles = []
+
+a = 0
+b = Vector(0, sqrt(3)/2, 0.5)
+c = Z
+for i in range(128):
+  strip_triangles.append(Triangle(a, b, c, texture = strip_textures[i%3]))
+  a = b
+  b = c
+  c = a + Z
+
+strip = Union(strip_triangles).transform(translate(5, -2, -4))
+
 ground = Plane(
   normal = Y, distance = -2,
 
@@ -112,6 +133,7 @@ ground = Plane(
 objects = [
   hollow_cube,
   spike,
+  strip,
   ground,
 ]