Merge pull request #6 from adam-urbanczyk/CapableRobot-cq1_pythonocc

Initial support for cqparts in cadquery-occ

cadquery/occ_impl/geom.py

@@ -199,7 +199,20 @@ class Matrix:
 
     def multiply(self, other):
 
-        return Matrix(self.wrapped*other.wrapped)
+        if isinstance(other, Vector):
+            return other.transform(self)
+
+        return Matrix(self.wrapped.Multiplied(other.wrapped))
+
+    def transposed_list(self):
+        """Needed by the cqparts gltf exporter
+        """
+        
+        trsf = self.wrapped
+        data = [[trsf.Value(i,j) for j in range(1,5)] for i in range(1,4)] + \
+               [[0.,0.,0.,1.]]
+        
+        return [data[j][i] for i in range(4) for j in range(4)]
 
 class Plane(object):
     """A 2D coordinate system in space

cadquery/occ_impl/shapes.py

@@ -100,6 +100,8 @@ from OCC.ShapeUpgrade import ShapeUpgrade_UnifySameDomain
 
 from OCC.BRepTools import breptools_Write
 
+from OCC.Visualization import Tesselator
+
 from math import pi, sqrt
 
 TOLERANCE = 1e-6
@@ -993,7 +995,22 @@ class Shell(Shape):
 class Mixin3D(object):
 
     def tessellate(self, tolerance):
-        return self.wrapped.tessellate(tolerance)
+        tess = Tesselator(self.wrapped)
+        tess.Compute(compute_edges=True, mesh_quality=tolerance)
+
+        vertices = []
+        indexes  = []
+
+        # add vertices
+        for i_vert in range(tess.ObjGetVertexCount()):
+            xyz = tess.GetVertex(i_vert)
+            vertices.append(Vector(*xyz))
+
+        # add triangles
+        for i_tr in range(tess.ObjGetTriangleCount()):
+            indexes.append(tess.GetTriangleIndex(i_tr))
+
+        return vertices, indexes
 
     def fillet(self, radius, edgeList):
         """