move useful bits from view.py into camera.py and get rid of view.py

1 files changed, 8 insertions, 1 deletions

diff --git a/make.py b/make.py
index 0375084..523b10f 100644
--- a/make.py
+++ b/make.py
@@ -6,7 +6,7 @@ from chroma.itertoolset import *
 def mesh_grid(grid):
     return np.vstack(zip(grid[:-1].flatten(),grid[1:].flatten(),np.roll(grid[1:],-1,1).flatten()) + zip(grid[:-1].flatten(),np.roll(grid[1:],-1,1).flatten(),np.roll(grid[:-1],-1,1).flatten()))
 
-def linear_extrude(x1, y1, height, x2=None, y2=None):
+def linear_extrude(x1, y1, height, x2=None, y2=None, center=None):
     """
     Return the solid mesh formed by linearly extruding the polygon formed by
     the x and y points `x1` and `y1` by a distance `height`. If `x2` and `y2`
@@ -41,6 +41,9 @@ def linear_extrude(x1, y1, height, x2=None, y2=None):
     vertices = np.fromiter(flatten(roundrobin(*vertex_iterators)), float)
     vertices = vertices.reshape((len(vertices)//3,3))
 
+    if center is not None:
+        vertices += center
+
     triangles = mesh_grid(np.arange(len(vertices)).reshape((len(x1),len(vertices)//len(x1))).transpose()[::-1])
 
     return Mesh(vertices, triangles, remove_duplicate_vertices=True)
@@ -65,6 +68,10 @@ def rotate_extrude(x, y, nsteps=64):
 
     return Mesh(vertices, triangles, remove_duplicate_vertices=True)
 
+def box(dx, dy, dz, center=(0,0,0)):
+    "Return a box with linear dimensions `dx`, `dy`, and `dz`."
+    return linear_extrude([-dx/2.0,dx/2.0,dx/2.0,-dx/2.0],[-dy/2.0,-dy/2.0,dy/2.0,dy/2.0],height=dz,center=center)
+
 def cube(size=1, height=None):
     "Return a cube mesh whose sides have length `size`."
     if height is None: