def makeSimpleGeomBuffer(array, color, geomType=GeomPoints):
""" massively faster than the nonbuffer version """
full = [tuple(d) for d in np.hstack((array, color))]
fmt = GeomVertexFormat.getV3c4()
vertexData = GeomVertexData(
'points', fmt, Geom.UHDynamic
) #FIXME use the index for these too? with setPythonTag, will have to 'reserve' some
cloudGeom = Geom(vertexData)
cloudNode = GeomNode('just some points')
vertexData.setNumRows(len(array))
mem_array = vertexData.modifyArray(0)
view = memoryview(mem_array)
arr = np.asarray(view)
arr[:] = full
points = geomType(Geom.UHDynamic)
points.addConsecutiveVertices(0, len(array))
points.closePrimitive()
cloudGeom.addPrimitive(points)
cloudNode.addGeom(cloudGeom)
return cloudNode
def makeSimpleGeomBuffer(array, color, geomType=GeomPoints):
""" massively faster than the nonbuffer version """
full = [tuple(d) for d in np.hstack((array,color))]
fmt = GeomVertexFormat.getV3c4()
vertexData = GeomVertexData('points', fmt, Geom.UHDynamic) #FIXME use the index for these too? with setPythonTag, will have to 'reserve' some
cloudGeom = Geom(vertexData)
cloudNode = GeomNode('just some points')
vertexData.setNumRows(len(array))
mem_array = vertexData.modifyArray(0)
view = memoryview(mem_array)
arr = np.asarray(view)
arr[:] = full
points = geomType(Geom.UHDynamic)
points.addConsecutiveVertices(0,len(array))
points.closePrimitive()
cloudGeom.addPrimitive(points)
cloudNode.addGeom(cloudGeom)
return cloudNode
import numpy as np
from panda3d.core import Geom, GeomVertexFormat, GeomVertexData
from .util.ipython import embed
size = 1000
data = np.random.randint(0,1000,(size,3))
#color = np.random.randint(0,255,(size,4))
color = np.repeat(np.random.randint(0,255,(1,4)), size, 0)
#full = np.hstack((data,color))
full = [tuple(d) for d in np.hstack((data,color))]
#full = [tuple(*d,*color) for d in data]
geom = GeomVertexData('points', GeomVertexFormat.getV3c4(), Geom.UHDynamic)
geom.setNumRows(len(full))
array = geom.modifyArray(0) # need a writeable version
handle = array.modifyHandle()
#options are then the following:
view = memoryview(array)
arr = np.asarray(view)
arr[:] = full
embed()
#OR
#handle.copyDataFrom('some other handle to a GVDA')
#handle.copySubataFrom(to_start, to_size, buffer, from_start, from_size)
