From a19a216bc60160c162e616145ef091dd18ce4e61 Mon Sep 17 00:00:00 2001 From: Skip Montanaro Date: Tue, 16 Feb 2021 14:40:46 -0600 Subject: Python 0.9.1 as posted in alt.sources --- demo/sgi/gl_panel/twoview/block.py | 73 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 demo/sgi/gl_panel/twoview/block.py (limited to 'demo/sgi/gl_panel/twoview/block.py') 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() -- cgit v1.2.3