Pyglet Batch error "Value Error: Can only assign sequence of same size"

Question

所以我正在尝试使用 pyglet 中的批处理 class 来制作这样的面孔

class Block:
    def __init__(self, pos):
        self.pos = pos

        self.top = self.get_tex('img.png')
        self.batch = pyglet.graphics.Batch()
        tex_coords = ('t2f',(0,0, 1,0, 1,1, 0,1, ))
        self.batch.add(4, GL_QUADS, self.top, ('v3f', (self.add(pos, [0, 1, 0]), self.add(pos, [0, 1, 1]), self.add(pos, [1, 1, 1]), self.add(pos, [1, 1, 0]))), tex_coords)

    def add(self, vec, toAdd):
        vec = list(vec)
        toAdd = list(toAdd)
        vec[0] += toAdd[0]
        vec[1] += toAdd[1]
        vec[2] += toAdd[2]
        return vec

    def get_tex(self, file):
        tex = pyglet.image.load(file).get_texture()
        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
        glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST)
        return pyglet.graphics.TextureGroup(tex)

但是我得到错误：

ValueError: Can only assign sequence of same size

Answer 1

参数必须是浮点列表或元组，而不是嵌套列表或带有元组元素的元组。

您的代码生成的是：

('v3f', ([0, 1, 0], [0, 1, 1], [1, 1, 1], [1, 1, 0]))

它应该生成的是：

('v3f', (0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0))

使用asterisk(*) operator来解压顶点坐标：

~~('v3f', (self.add(pos, [0, 1, 0]), self.add(pos, [0, 1, 1]), self.add(pos, [1, 1, 1]), self.add(pos, [1, 1, 0])))~~

('v3f', (*self.add(pos, [0, 1, 0]), *self.add(pos, [0, 1, 1]), *self.add(pos, [1, 1, 1]), *self.add(pos, [1, 1, 0])))

Class Block

class Block:
    def __init__(self, pos):
        self.pos = pos
        self.batch = pyglet.graphics.Batch()
        tex_coords = ('t2f',(0,0, 1,0, 1,1, 0,1, ))
        vertices = ('v3f', (*self.add(pos, [0, 1, 0]), *self.add(pos, [0, 1, 1]), *self.add(pos, [1, 1, 1]), *self.add(pos, [1, 1, 0])))
        self.batch.add(4, GL_QUADS, self.top, vertices, tex_coords)

    def add(self, vec, toAdd):
        vec = list(vec)
        toAdd = list(toAdd)
        vec[0] += toAdd[0]
        vec[1] += toAdd[1]
        vec[2] += toAdd[2]
        return vec

    def get_tex(self, file):
        tex = pyglet.image.load(file).get_texture()
        glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)
        glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST)
        return pyglet.graphics.TextureGroup(tex)

Pyglet Batch error "Value Error: Can only assign sequence of same size"

Pyglet Batch error "Value Error: Can only assign sequence of same size"

python

pyglet