from OpenGL.GL import * from .. GLGraphicsItem import GLGraphicsItem from .. MeshData import MeshData from pyqtgraph.Qt import QtGui import pyqtgraph as pg from .. import shaders import numpy as np __all__ = ['GLMeshItem'] class GLMeshItem(GLGraphicsItem): """ **Bases:** :class:`GLGraphicsItem ` Displays a 3D triangle mesh. """ def __init__(self, faces, vertexes=None): """ See :class:`MeshData ` for initialization arguments. """ if isinstance(faces, MeshData): self.data = faces else: self.data = MeshData() self.data.setFaces(faces, vertexes) GLGraphicsItem.__init__(self) def initializeGL(self): self.shader = shaders.getShader('balloon') l = glGenLists(1) self.triList = l glNewList(l, GL_COMPILE) glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) glEnable( GL_BLEND ) glEnable( GL_ALPHA_TEST ) #glAlphaFunc( GL_ALWAYS,0.5 ) glEnable( GL_POINT_SMOOTH ) glDisable( GL_DEPTH_TEST ) glColor4f(1, 1, 1, .1) glBegin( GL_TRIANGLES ) for face in self.data: for (pos, norm, color) in face: glColor4f(*color) glNormal3f(norm.x(), norm.y(), norm.z()) glVertex3f(pos.x(), pos.y(), pos.z()) glEnd() glEndList() #l = glGenLists(1) #self.meshList = l #glNewList(l, GL_COMPILE) #glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) #glEnable( GL_BLEND ) #glEnable( GL_ALPHA_TEST ) ##glAlphaFunc( GL_ALWAYS,0.5 ) #glEnable( GL_POINT_SMOOTH ) #glEnable( GL_DEPTH_TEST ) #glColor4f(1, 1, 1, .3) #glBegin( GL_LINES ) #for f in self.faces: #for i in [0,1,2]: #j = (i+1) % 3 #glVertex3f(*f[i]) #glVertex3f(*f[j]) #glEnd() #glEndList() def paint(self): shaders.glUseProgram(self.shader) glCallList(self.triList) shaders.glUseProgram(0) #glCallList(self.meshList)