我试图将PyGame PyOpenGL tutorial的示例代码拼成PyQt5 QOpenGLWidget的示例代码。此代码的目标是设置一个角向上倾斜的立方体,以便识别相机的角度。它在PyGame中运行良好,但PyQt5版本存在几个问题:
首先,纵横比似乎是关闭的。 第二,每次我再次激活该窗口时,它都会调用paintGL。 第三,大多数变量在GLTRANSTALEF和GLROTATIEF方面的传递方式不同
我用于PyGame的代码:
import pygame
from pygame.locals import *
from OpenGL.GL import *
from OpenGL.GLU import *
verticies = (
(1, -1, -1),
(1, 1, -1),
(-1, 1, -1),
(-1, -1, -1),
(1, -1, 2),
(1, 1, 1),
(-1, -1, 1),
(-1, 1, 1)
)
edges = (
(0,1),
(0,3),
(0,4),
(2,1),
(2,3),
(2,7),
(6,3),
(6,4),
(6,7),
(5,1),
(5,4),
(5,7)
)
colors = (
(1,0,0),
(0,1,0),
(0,0,1),
(0,1,0),
(1,1,1),
(0,1,1),
(1,0,0),
(0,1,0),
(0,0,1),
(1,0,0),
(1,1,1),
(0,1,1),
)
surfaces = (
(0,1,2,3),
(3,2,7,6),
(6,7,5,4),
(4,5,1,0),
(1,5,7,2),
(4,0,3,6)
)
def Cube():
glBegin(GL_QUADS)
for surface in surfaces:
x = 0
for vertex in surface:
x+=1
glColor3fv(colors[x])
glVertex3fv(verticies[vertex])
glEnd()
glBegin(GL_LINES)
for edge in edges:
for vertex in edge:
glVertex3fv(verticies[vertex])
glEnd()
def main():
pygame.init()
display = (800,600)
pygame.display.set_mode(display, DOUBLEBUF|OPENGL)
gluPerspective(45, (display[0]/display[1]), 0.1, 50.0)
glTranslatef(0,0, -10) #these two lines set the camera facing at the cube from the position 0, -10, 0.
glRotatef(-90, 2, 0, 0)
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
pygame.quit()
quit()
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
glTranslatef(-0.5,0,0)
if event.key == pygame.K_RIGHT:
glTranslatef(0.5,0,0)
if event.key == pygame.K_UP:
glTranslatef(0,1,0)
if event.key == pygame.K_DOWN:
glTranslatef(0,-1,0)
if event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 4:
glTranslatef(0,0,1.0)
if event.button == 5:
glTranslatef(0,0,-1.0)
#glRotatef(1, 3, 1, 1) #rotation code that was commented out.
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
Cube()
pygame.display.flip()
pygame.time.wait(10)
main()
PyQt5代码:
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.uic import *
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.GLU import *
class mainWindow(QMainWindow): #Main class.
verticies = (
(1, -1, -1),
(1, 1, -1),
(-1, 1, -1),
(-1, -1, -1),
(1, -1, 2),
(1, 1, 1),
(-1, -1, 1),
(-1, 1, 1)
)
edges = (
(0,1),
(0,3),
(0,4),
(2,1),
(2,3),
(2,7),
(6,3),
(6,4),
(6,7),
(5,1),
(5,4),
(5,7)
)
colors = (
(1,0,0),
(0,1,0),
(0,0,1),
(0,1,0),
(1,1,1),
(0,1,1),
(1,0,0),
(0,1,0),
(0,0,1),
(1,0,0),
(1,1,1),
(0,1,1),
)
surfaces = (
(0,1,2,3),
(3,2,7,6),
(6,7,5,4),
(4,5,1,0),
(1,5,7,2),
(4,0,3,6)
)
def __init__(self):
super(mainWindow, self).__init__()
self.width = 700 #Variables used for the setting of the size of everything
self.height = 600
self.setGeometry(0, 0, self.width, self.height) #Set the window size
def setupUI(self):
self.openGLWidget = QOpenGLWidget(self) #Create the GLWidget
self.openGLWidget.setGeometry(0, 0, self.width, self.height) #Size it the same as the window.
self.openGLWidget.initializeGL()
self.openGLWidget.resizeGL(self.width, self.height) #Resize GL's knowledge of the window to match the physical size?
self.openGLWidget.paintGL = self.paintGL #override the default function with my own?
def paintGL(self):
gluPerspective(45, self.width / self.height, 0.1, 50.0) #set perspective?
glTranslatef(0, 0, -2) #I used -10 instead of -2 in the PyGame version.
glRotatef(-90, 1, 0, 0) #I used 2 instead of 1 in the PyGame version.
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT) #Straight from the PyGame version, with 'self' inserted occasionally
glBegin(GL_QUADS) #tell GL to draw surfaces
for surface in self.surfaces:
x = 0
for vertex in surface:
x+=1
glColor3fv(self.colors[x])
glVertex3fv(self.verticies[vertex])
glEnd() #tell GL to stop drawing surfaces
glBegin(GL_LINES) #tell GL to draw lines
for edge in self.edges:
for vertex in edge:
glVertex3fv(self.verticies[vertex])
glEnd() #tell GL to stop drawing lines.
app = QApplication([])
window = mainWindow()
window.setupUI()
window.show()
sys.exit(app.exec_())
结果是:
当我切换到另一个窗口,然后切换回Qt窗口时,场景将更新,并再次调用paintGL。此外,立方体似乎被挤压,相机的动作也不同。我能做些什么来修复这些
Python 3.8 视窗10
OpenGL矩阵操作(如^{} 、^{} 、^{} 、…)不仅仅设置矩阵。这些操作定义一个新矩阵,并将当前矩阵乘以新矩阵。每次调用} 加载标识矩阵,可以轻松解决该问题:
paintGL
时,矩阵持续且渐进变化的原因。通过在
paintGL
开头的^{但是Legacy OpenGL提供了不同的矩阵(参见^{} )。} )和投影矩阵。在
建议将投影矩阵推到当前
GL_PROJECTION
矩阵,将模型视图矩阵推到当前GL_MODELVIEW
矩阵。在调整大小事件回调(
resizeGL
)中更新视口矩形(^{paintGL
中设置模型视图矩阵:相关问题 更多 >
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