Python 0.9.1 as posted in alt.sources

1 files changed, 73 insertions, 0 deletions

diff --git a/demo/sgi/gl_panel/twoview/block.py b/demo/sgi/gl_panel/twoview/block.py
new file mode 100644
index 0000000..9ac518d
--- /dev/null
+++ b/demo/sgi/gl_panel/twoview/block.py
@@ -0,0 +1,73 @@
+# module 'block' imported by twoview demo.
+
+from gl import n3f, bgnpolygon, varray, endpolygon, lmbind
+from GL import MATERIAL
+
+# Draw a single 2x2x2 block with its center at (0, 0, 0)
+# Arguments are the material indices (0 = don't call lmbind)
+#
+def block(m_front, m_back, m_left, m_right, m_top, m_bottom):
+ #
+ # Distances defining the sides
+ #
+ x_left = -1.0
+ x_right = 1.0
+ y_top = 1.0
+ y_bottom = -1.0
+ z_front = 1.0
+ z_back = -1.0
+ #
+ # Top surface points: A, B, C, D
+ #
+ A = x_right, y_top, z_front
+ B = x_right, y_top, z_back
+ C = x_left, y_top, z_back
+ D = x_left, y_top, z_front
+ #
+ # Bottom surface points: E, F, G, H
+ #
+ E = x_right, y_bottom, z_front
+ F = x_right, y_bottom, z_back
+ G = x_left, y_bottom, z_back
+ H = x_left, y_bottom, z_front
+ #
+ # Draw front face
+ #
+ if m_front: lmbind(MATERIAL, m_front)
+ n3f(0.0, 0.0, 1.0)
+ face(H, E, A, D)
+ #
+ # Draw back face
+ #
+ if m_back: lmbind(MATERIAL, m_back)
+ n3f(0.0, 0.0, -1.0)
+ face(G, F, B, C)
+ #
+ # Draw left face
+ #
+ if m_left: lmbind(MATERIAL, m_left)
+ n3f(-1.0, 0.0, 0.0)
+ face(G, H, D, C)
+ #
+ # Draw right face
+ #
+ if m_right: lmbind(MATERIAL, m_right)
+ n3f(1.0, 0.0, 0.0)
+ face(F, E, A, B)
+ #
+ # Draw top face
+ #
+ if m_top: lmbind(MATERIAL, m_top)
+ n3f(0.0, 1.0, 0.0)
+ face(A, B, C, D)
+ #
+ # Draw bottom face
+ #
+ if m_bottom: lmbind(MATERIAL, m_bottom)
+ n3f(0.0, -1.0, 0.0)
+ face(E, F, G, H)
+
+def face(points):
+ bgnpolygon()
+ varray(points)
+ endpolygon()