Reduce duplication between demo.py and demo.dmnsn.

2 files changed, 7 insertions, 130 deletions

diff --git a/libdimension-python/tests/Makefile.am b/libdimension-python/tests/Makefile.am
index 29411ab..ce12ed7 100644
--- a/libdimension-python/tests/Makefile.am
+++ b/libdimension-python/tests/Makefile.am
@@ -22,7 +22,8 @@ TESTS = geometry.py                                                            \
         canvas.py                                                              \
         demo.py
 TEST_EXTENSIONS = .py
-TESTS_ENVIRONMENT = PYTHONPATH=$(top_builddir)/libdimension-python/.libs
+TESTS_ENVIRONMENT = PYTHONPATH=$(top_builddir)/libdimension-python/.libs       \
+                    top_srcdir=$(top_srcdir)
 
 .py:
 	cp $(srcdir)/$@ .
diff --git a/libdimension-python/tests/demo.py b/libdimension-python/tests/demo.py
index e4e1e14..307aafc 100755
--- a/libdimension-python/tests/demo.py
+++ b/libdimension-python/tests/demo.py
@@ -19,6 +19,8 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>. #
 #########################################################################
 
+import os
+import os.path
 from math import *
 from dimension import *
 
@@ -37,135 +39,9 @@ except OSError as e:
   else:
     raise
 
-# Camera
-camera = PerspectiveCamera(location = (0, 0.25, -4),
-                           look_at   = 0)
-camera.transform(rotate(53*Y))
-
-# Lights
-lights = [
-  PointLight(location = (-15, 20, 10), color = White),
-]
-
-# Objects
-
-hollow_cube = Difference(
-  [
-    Box(
-      (-1, -1, -1), (1, 1, 1),
-
-      texture = Texture(
-        pigment = Color(0, 0, 1, trans = 0.75, filter = 1/3),
-        finish  = Reflection(0.5),
-      ),
-      interior = Interior(
-        ior = 1.1,
-      ),
-    )
-    .transform(rotate(45*X)),
-
-    Sphere(
-      center = 0, radius = 1.25,
-      texture = Texture(
-        pigment = Green,
-        finish  = Phong(strength = 0.2, size = 40),
-      ),
-    )
-  ],
-)
-
-arrow = Union(
-  [
-    Cylinder(bottom = -1.25*Y, top = 1.25*Y, radius = 0.1),
-    Cone(
-      bottom = 1.25*Y, bottom_radius = 0.1,
-      top    = 1.5*Y,  top_radius    = 0,
-      open = True
-    ),
-  ],
-  pigment = ColorMap(
-    Gradient(Y),
-    {
-      0/6: Red,
-      1/6: Orange,
-      2/6: Yellow,
-      3/6: Green,
-      4/6: Blue,
-      5/6: Magenta,
-      6/6: Red,
-    },
-  )
-  .transform(scale(1, 2.75, 1))
-  .transform(translate(-1.25*Y)),
-)
-
-torii = Union(
-  [
-    Torus(major_radius = 0.15, minor_radius = 0.05)
-      .transform(translate(-Y)),
-
-    Torus(major_radius = 0.15, minor_radius = 0.05),
-
-    Torus(major_radius = 0.15, minor_radius = 0.05)
-      .transform(translate(Y)),
-  ],
-  texture = Texture(
-    pigment = Blue,
-    finish  = Ambient(1),
-  ),
-)
-
-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,
-
-  pigment = PigmentMap(
-    Checker(),
-    [
-      White,
-      ColorMap(Checker(), [Black, White]).transform(scale(1/3))
-    ],
-  ),
-)
-
-objects = [
-  hollow_cube,
-  spike,
-  strip,
-  ground,
-]
-
-# Sky sphere
-sky_sphere = SkySphere(
-  [
-    ColorMap(
-      pattern = Gradient(Y),
-      map     = {
-        0:    Orange,
-        0.35: Color(0, 0.1, 0.2, trans = 0.1, filter = 0.0),
-      },
-    ),
-  ]
-)
+path = os.path.join(os.environ["top_srcdir"], "dimension/tests/demo.dmnsn")
+with open(path) as fh:
+  exec(compile(fh.read(), path, "exec"))
 
 # Scene
 scene = Scene(canvas  = canvas,