使用OpenGL实现鼠标框选动画

class RectPainter: def init(self): # super().init() self.start_x = 0 self.start_y = 0 self.end_x = 0 self.end_y = 0 self.clear_flag = False def prepare(self): vshader_src = """ #version 330 core layout (location = 0) in vec3 aPos; void main() { gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0); // gl_Position是内置变量}