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最近，我已经开始从这个网站学习openGL =>http://3dgep.com/?p=2365
我遇到了一个问题。这是我没有得到现场显示的场景。三维立方体没有正确显示pyglet
我张贴在这个网站我的代码：
import pyglet
from pyglet.gl import *
from pyglet import clock, window
'''
http://www.learnersdictionary.com/search/aspect
a dictionary site
http://www.opengl.org/sdk/docs/man2/
opengl api reference
'''
def vector(type, *args):
'''
return a ctype array
GLfloat
GLuint
...
'''
return (type*len(args))(*args)
class model:
def __init__(self, vertices, colorMatrix, indice):
self.vertices = vertices
self.colorMatrix = colorMatrix
self.indice = indice
self.angle = 0
def update(self):
self.angle += 1
self.angle %= 360
def draw(self):
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glRotatef(self.angle, 1, 1, 0)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_COLOR_ARRAY)
glColorPointer(3, GL_FLOAT, 0, vector(GLfloat, *self.colorMatrix))
glVertexPointer(3, GL_FLOAT, 0, vector(GLfloat, *self.vertices))
glDrawElements(GL_QUADS, len(self.indice), GL_UNSIGNED_INT, vector(GLuint, *self.indice))
glDisableClientState(GL_COLOR_ARRAY)
glDisableClientState(GL_VERTEX_ARRAY)
class world:
def __init__(self):
self.element = []
def update(self, dt):
for obj in self.element:
obj.update()
def addModel(self, model):
self.element.append(model)
def draw(self):
for obj in self.element:
obj.draw()
def setup():
# look for GL_DEPTH_BUFFER_BIT
glEnable(GL_DEPTH_TEST)
win = window.Window(fullscreen=False, vsync=True, resizable=True, height=600, width=600)
mWorld = world()
cube = (
1, 1, 1, #0
-1, 1, 1, #1
-1, -1, 1, #2
1, -1, 1, #3
1, 1, -1, #4
-1, 1, -1, #5
-1, -1, -1, #6
1, -1, -1 #7
)
color = (
1, 0, 0,
1, 0, 0,
1, 0, 0,
1, 0, 0,
0, 1, 0,
0, 1, 0,
0, 0, 1,
0, 0, 1
)
indice = (
0, 1, 2, 3, # front face
0, 4, 5, 1, # top face
4, 0, 3, 7, # right face
1, 5, 6, 2, # left face
3, 2, 6, 7 # bottom face
#4, 7, 6, 5 #back face
)
obj = model(cube, color, indice)
mWorld.addModel(obj)
@win.event
def on_resize(width, height):
glViewport(0, 0, width, height)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-10, 10, -10, 10, -10, 10)
glMatrixMode(GL_MODELVIEW)
return pyglet.event.EVENT_HANDLED
@win.event
def on_draw():
glClearColor(0.2, 0.2, 0.2, 0.8)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
mWorld.draw()
pyglet.clock.schedule(mWorld.update)
clock.set_fps_limit(30)
setup()
pyglet.app.run()
我想也许我错过了一些重要的概念，所以我不能得到正确的结果。任何人都可以教我我犯了什么错误？ :(
此外，还有一些奇怪的事情。
indice = (
0, 1, 2, 3, # front face
0, 4, 5, 1, # top face
4, 0, 3, 7, # right face
1, 5, 6, 2, # left face
3, 2, 6, 7 # bottom face
#4, 7, 6, 5 #back face
)
如果我取消这条线从 到
#4, 7, 6, 5 #back face
4, 7, 6, 5 #back face屏幕上会显示什么...