python|pyopengl全解析-4 3d渲染|opengl

pyopengl全解析-4

前言
开始
- - - glutKeyboardFunc
    - glutSpecialFunc
    - glutMotionFunc
  - glutPassiveMotionFunc
  - glutMouseFunc
  - - - 作者

前言还是，番外篇链接附上。
跟新速度会稍慢一些，因为我有项目要做，请各位看官不要着急哈~
开始今天学习一个很重要的东西——事件
OpenGL支持的事件很少，都是由GLUT提供的，有：

键盘按下(glutKeyboardFunc、glutSpecialFunc)
鼠标移动(glutMotionFunc、glutPassiveMotionFunc)
鼠标按下、放开(glutMouseFunc)

注册方式都是register(func)，例如 glutKeyboardFunc(keyboard)
glutKeyboardFunc glutKeyboardFunc在c++中的原型是：

void glutKeyboardFunc(void (*func) (unsigned char key, int x, int y));

学过c++能看明白，其参数是一个以(按钮，鼠标x轴位置，鼠标y轴位置)为参数的函数。另glutKeyboardFunc不处理特殊键。
例子：

from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * def drawFunc(): glClear(GL_COLOR_BUFFER_BIT) glRotatef(1, 0, 1, 0) glutWireTeapot(0.5) glFlush() def procKeyboard(key,x,y): print('KEYBOARD RECALL:') print('MOUSE:%s,%s'%(x,y)) print('KEY:%s'%key.decode()) glutInit() glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA) glutInitWindowSize(400, 400) glutCreateWindow(b"First") glutKeyboardFunc(procKeyboard) glutDisplayFunc(drawFunc) glutIdleFunc(drawFunc) glutMainLoop()

glutSpecialFunc 函数原型 ↓ \downarrow ↓

void glutSpecialFunc(void (*func)(int key,int x,int y));

其与glutKeyboardFunc相似，但只处理特殊键 ↓ \downarrow ↓

GLUT_KEY_BEGIN
GLUT_KEY_DELETE
GLUT_KEY_DOWN
GLUT_KEY_END
GLUT_KEY_F1
GLUT_KEY_F2
GLUT_KEY_F3
GLUT_KEY_F4
GLUT_KEY_F5
GLUT_KEY_F6
GLUT_KEY_F7
GLUT_KEY_F8
GLUT_KEY_F9
GLUT_KEY_F10
GLUT_KEY_F11
GLUT_KEY_F12
GLUT_KEY_HOME
GLUT_KEY_INSERT
GLUT_KEY_LEFT
GLUT_KEY_NUM_LOCK
GLUT_KEY_PAGE_DOWN
GLUT_KEY_PAGE_UP
GLUT_KEY_REPEAT_DEFAULT
GLUT_KEY_REPEAT_OFF
GLUT_KEY_REPEAT_ON
GLUT_KEY_RIGHT
GLUT_KEY_UP

例子：

from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * def drawFunc(): glClear(GL_COLOR_BUFFER_BIT) glRotatef(1, 0, 1, 0) glutWireTeapot(0.5) glFlush() def procKeyboard(key,x,y): print('KEYBOARD RECALL:') print('MOUSE:%s,%s'%(x,y)) print('KEY:%s'%key) glutInit() glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA) glutInitWindowSize(400, 400) glutCreateWindow(b"First") glutSpecialFunc(procKeyboard) glutDisplayFunc(drawFunc) glutIdleFunc(drawFunc) glutMainLoop()

glutMotionFunc 拖拽事件
函数原型 ↓ \downarrow ↓

void glutMotionFunc(void(*func)(int x,int y));

例子：

from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * def drawFunc(): glClear(GL_COLOR_BUFFER_BIT) glRotatef(1, 0, 1, 0) glutWireTeapot(0.5) glFlush() def procMotion(x,y): print('MOTION RECALL:') print('MOUSE:%s,%s'%(x,y)) glutInit() glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA) glutInitWindowSize(400, 400) glutCreateWindow(b"First") glutMotionFunc(procMotion) glutDisplayFunc(drawFunc) glutIdleFunc(drawFunc) glutMainLoop()

glutPassiveMotionFunc
鼠标移动事件
函数原型 ↓ \downarrow ↓

void glutPassivMotionFunc(void(*func)(int x,int y));

例子：

from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * def drawFunc(): glClear(GL_COLOR_BUFFER_BIT) glRotatef(1, 0, 1, 0) glutWireTeapot(0.5) glFlush() def procMotion(x,y): print('MOTION RECALL:') print('MOUSE:%s,%s'%(x,y)) glutInit() glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA) glutInitWindowSize(400, 400) glutCreateWindow(b"First") glutPassiveMotionFunc(procMotion) glutDisplayFunc(drawFunc) glutIdleFunc(drawFunc) glutMainLoop()

glutMouseFunc
函数原型 ↓ \downarrow ↓

void glutMouseFunc(void(*func)(int x,int y));

【python|pyopengl全解析-4】例子：

from OpenGL.GL import * from OpenGL.GLU import * from OpenGL.GLUT import * def drawFunc(): glClear(GL_COLOR_BUFFER_BIT) glRotatef(1, 0, 1, 0) glutWireTeapot(0.5) glFlush() def procMouse(btn,state,x,y): st = 'pressed' if(state == GLUT_DOWN) else 'released' print('MOTION RECALL:') print('button %s %s'%(btn,st)) print('MOUSE:%s,%s'%(x,y)) glutInit() glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA) glutInitWindowSize(400, 400) glutCreateWindow(b"First") glutMouseFunc(procMouse) glutDisplayFunc(drawFunc) glutIdleFunc(drawFunc) glutMainLoop()

作者 hit-road
拜拜,下课!
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