pyglet and opengl -- 纹理映射以及动画

超、凢脫俗 2022-10-09 13:28 32阅读 0赞

#-*- coding:gbk -*-
    #from pyglet.gl import *
    from OpenGL.GL import *
    import pyglet
    from pyglet import clock
    from PIL import Image
    from ctypes import *
    
    def draw_rect(x, y,z,width, height,ang):
        """
        实际矩形代码
        """
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        glPushMatrix()
        glLoadIdentity()
        glTranslatef(x+width/2,y+height/2,0.0)
        glRotatef(ang,0.0,1.0,0.0)
        glBegin(GL_QUADS)
        glTexCoord2f(0.0,0.0)  #纹理坐标
        glVertex3f(x-width/2, y-height/2,z)
        glTexCoord2f(1.0,0.0)
        glVertex3f(x + width/2, y-height/2,z)
        glTexCoord2f(1.0,1.0)
        glVertex3f(x + width/2, y + height/2,z)
        glTexCoord2f(0.0,1.0)
        glVertex3f(x-width/2, y + height/2,z)
        glEnd()
        glPopMatrix()
    
    
    class Button():
        x=y=z=0
        width=height=10.0
        ang=0
        TEXTUREWIDTH=100
        TEXTUREHEIGHT=100
        image_data=[] #保存纹理数据
        def draw(self):
            """
            画矩形
            """
            draw_rect(self.x,self.y,self.z,self.width,self.height,self.ang)
    
        def loadTexture(self):
            """
            载入纹理
            """
            #创建纹理对象
            texid=glGenTextures(1)        #绑定纹理
            glBindTexture(GL_TEXTURE_2D,texid)
            glPixelStorei(GL_UNPACK_ALIGNMENT,1)
            #开启纹理功能
            glEnable(GL_TEXTURE_2D)
            #说明映射方式
            glTexEnvf(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_DECAL)
            #设置滤波方式
            glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST)
            glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST)
            #纹理图
            glTexImage2D(GL_TEXTURE_2D,0,3,self.TEXTUREWIDTH,self.TEXTUREHEIGHT,0,GL_RGBA,GL_UNSIGNED_BYTE,self.image_data)
    
    
        def load_image(self,imagePath):
            """
            读取图像的数据
            """
            imageData=Image.open(imagePath)
            try:
                imageData=imageData.convert('RGB')
                self.TEXTUREWIDTH,self.TEXTUREHEIGHT,self.image_data=imageData.size[0],imageData.size[1],imageData.tostring('raw','RGBA',0,-1)
            except SystemError:
                self.TEXTUREWIDTH,self.TEXTUREHEIGHT,self.image_data=imageData.size[0],imageData.size[1],imageData.tostring('raw','RGBX',0,-1)
            assert self.TEXTUREWIDTH*self.TEXTUREHEIGHT*4 == len(self.image_data)
    
    
    
    
    class MyWindow(pyglet.window.Window):
        def __init__(self):
            super(MyWindow,self).__init__()
            #按钮
            self.button=Button()
            self.button.x=10
            self.button.y=10
            self.button.z=0
            self.button.width=self.width/2
            self.button.height=self.height/2
            self.button.ang=0
    
            #所有要画的图元
            self.need_draw=[
                    self.button,
                                ]
        def on_draw(self):
            """
            画图，刷新
            """
            self.clear()
            for draw_object in self.need_draw:
                draw_object.draw()
        def value_change(self,dt):
            self.button.x+=10.0
    
    
    
    
    
    if __name__ == "__main__":
        wn=MyWindow()
        wn.button.load_image('tex.jpg')
        wn.button.loadTexture()
        clock.schedule_interval(wn.value_change,0.5)
    pyglet.app.run()