29 lines
1.0 KiB
Python
29 lines
1.0 KiB
Python
from .GLMeshItem import GLMeshItem
|
|
from ..MeshData import MeshData
|
|
import numpy as np
|
|
|
|
class GLBarGraphItem(GLMeshItem):
|
|
def __init__(self, pos, size):
|
|
"""
|
|
pos is (...,3) array of the bar positions (the corner of each bar)
|
|
size is (...,3) array of the sizes of each bar
|
|
"""
|
|
nCubes = reduce(lambda a,b: a*b, pos.shape[:-1])
|
|
cubeVerts = np.mgrid[0:2,0:2,0:2].reshape(3,8).transpose().reshape(1,8,3)
|
|
cubeFaces = np.array([
|
|
[0,1,2], [3,2,1],
|
|
[4,5,6], [7,6,5],
|
|
[0,1,4], [5,4,1],
|
|
[2,3,6], [7,6,3],
|
|
[0,2,4], [6,4,2],
|
|
[1,3,5], [7,5,3]]).reshape(1,12,3)
|
|
size = size.reshape((nCubes, 1, 3))
|
|
pos = pos.reshape((nCubes, 1, 3))
|
|
verts = cubeVerts * size + pos
|
|
faces = cubeFaces + (np.arange(nCubes) * 8).reshape(nCubes,1,1)
|
|
md = MeshData(verts.reshape(nCubes*8,3), faces.reshape(nCubes*12,3))
|
|
|
|
GLMeshItem.__init__(self, meshdata=md, shader='shaded', smooth=False)
|
|
|
|
|
|
|