虚拟现实和增强现实之渲染和显示算法：体积渲染：纹理映射与材质模拟.docx

steps = np.ceil((volume.shape - origin) / direction).astype(int)

#

points = [origin + i * direction for i in range(steps.max())]

#

color = 0.0

for point in points:

x, y, z = point.astype(int)

if 0 <= x < volume.shape[0] and 0 <= y < volume.shape[1] and 0 <= z < volume.shape[2]:

color += volume[x, y, z]

return color