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Python Source  |  2008-07-21  |  1.9 KB  |  62 lines
  1. #python
  2.  
  3. import k3d
  4.  
  5. doc = Document
  6. doc.start_change_set()
  7. try:
  8.     frozen_mesh = doc.new_node("FrozenMesh")
  9.     frozen_mesh.name = "Cubic Curve"
  10.  
  11.     mesh = k3d.dynamic_cast(frozen_mesh, "imesh_storage").reset_mesh()
  12.  
  13.     points = mesh.create_points()
  14.     point_selection = mesh.create_point_selection()
  15.     Cs = mesh.writable_vertex_data().create_array("Cs", "k3d::color")
  16.  
  17.     groups = mesh.create_cubic_curve_groups()
  18.     first_curves = groups.create_first_curves()
  19.     curve_counts = groups.create_curve_counts()
  20.     periodic_curves = groups.create_periodic_curves()
  21.     materials = groups.create_materials()
  22.     constantwidth = groups.writable_constant_data().create_array("constantwidth", "k3d::double_t")
  23.     curve_first_points = groups.create_curve_first_points()
  24.     curve_point_counts = groups.create_curve_point_counts()
  25.     curve_selection = groups.create_curve_selection()
  26.     curve_points = groups.create_curve_points()
  27.  
  28.     positions = [k3d.point3(-5, 0, -5), k3d.point3(5, 0, -5), k3d.point3(-5, 0, 5), k3d.point3(5, 0, 5)]
  29.     colors = [k3d.color(1, 0, 0), k3d.color(0, 1, 0), k3d.color(0, 0, 1), k3d.color(1, 1, 1)]
  30.  
  31.     for position in positions:
  32.         points.append(position)
  33.         point_selection.append(0.0)
  34.  
  35.     for color in colors:
  36.         Cs.append(color)
  37.  
  38.     first_curves.append(len(curve_first_points))
  39.     curve_counts.append(1)
  40.     periodic_curves.append(False)
  41.     materials.append(None)
  42.     constantwidth.append(0.2)
  43.     curve_first_points.append(len(curve_points))
  44.     curve_point_counts.append(len(positions))
  45.     curve_selection.append(0.0)
  46.  
  47.     for i in range(len(positions)):
  48.         curve_points.append(i)
  49.  
  50.     mesh_instance = doc.new_node("MeshInstance")
  51.     mesh_instance.name = "Cubic Curve Instance"
  52.     mesh_instance.gl_painter = doc.get_node("GL Default Painter")
  53.     mesh_instance.ri_painter = doc.get_node("RenderMan Default Painter")
  54.     doc.set_dependency(mesh_instance.get_property("input_mesh"), frozen_mesh.get_property("output_mesh"))
  55.  
  56.     doc.finish_change_set("Create Cubic Curve")
  57.  
  58. except:
  59.     doc.cancel_change_set()
  60.     raise
  61.  
  62.