【发布时间】：2021-05-03 10:29:01
【问题描述】：
我一直在尝试在 opengl 上创建一些对象，但我遇到了对象某些部分消失的问题。
这里是我的代码。这实际上是一个默认示例，但我更改了一些部分
import sys
from PyQt5.QtCore import pyqtSignal, QPoint, QSize, Qt
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import (QApplication, QHBoxLayout, QOpenGLWidget, QSlider,
QWidget)
import OpenGL.GL as gl
from OpenGL.GL import *
from OpenGL.GLU import *
class Window(QWidget):
def __init__(self):
super(Window, self).__init__()
self.glWidget = GLWidget()
mainLayout = QHBoxLayout()
mainLayout.addWidget(self.glWidget)
self.setLayout(mainLayout)
self.setWindowTitle("Hello GL")
class GLWidget(QOpenGLWidget):
xRotationChanged = pyqtSignal(int)
yRotationChanged = pyqtSignal(int)
zRotationChanged = pyqtSignal(int)
def __init__(self, parent=None):
super(GLWidget, self).__init__(parent)
self.object = 0
self.xRot = 0
self.yRot = 0
self.zRot = 0
self.lastPos = QPoint()
self.trolltechGreen = QColor.fromCmykF(0.40, 0.0, 1.0, 0.0)
self.trolltechPurple = QColor.fromCmykF(0.0, 0.0, 0.0, 1.0)
self.quadric = gluNewQuadric()
def initializeGL(self):
print(self.getOpenglInfo())
self.setClearColor(self.trolltechPurple.darker())
self.object = self.main()
gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
gl.glEnable(gl.GL_BLEND)
gl.glShadeModel(gl.GL_FLAT)
gl.glEnable(gl.GL_DEPTH_TEST)
gl.glEnable(gl.GL_CULL_FACE)
def mousePressEvent(self, event):
self.lastPos = event.pos()
def minimumSizeHint(self):
return QSize(100, 100)
def sizeHint(self):
return QSize(600, 600)
def setXRotation(self, angle):
angle = self.normalizeAngle(angle)
if angle != self.xRot:
self.xRot = angle
self.xRotationChanged.emit(angle)
self.update()
def setYRotation(self, angle):
angle = self.normalizeAngle(angle)
if angle != self.yRot:
self.yRot = angle
self.yRotationChanged.emit(angle)
self.update()
def setZRotation(self, angle):
angle = self.normalizeAngle(angle)
if angle != self.zRot:
self.zRot = angle
self.zRotationChanged.emit(angle)
self.update()
def mousePressEvent(self, event):
self.lastPos = event.pos()
def mouseMoveEvent(self, event):
dx = event.x() - self.lastPos.x()
dy = event.y() - self.lastPos.y()
if event.buttons() & Qt.LeftButton:
self.setXRotation(self.xRot + 8 * dy)
self.setYRotation(self.yRot + 8 * dx)
elif event.buttons() & Qt.RightButton:
self.setXRotation(self.xRot + 8 * dy)
self.setZRotation(self.zRot + 8 * dx)
self.lastPos = event.pos()
def getOpenglInfo(self):
info = """
Vendor: {0}
Renderer: {1}
OpenGL Version: {2}
Shader Version: {3}
""".format(
gl.glGetString(gl.GL_VENDOR),
gl.glGetString(gl.GL_RENDERER),
gl.glGetString(gl.GL_VERSION),
gl.glGetString(gl.GL_SHADING_LANGUAGE_VERSION)
)
return info
def paintGL(self):
gl.glClear(
gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
gl.glLoadIdentity()
gl.glTranslated(0.0, 0.0, -10.0)
gl.glRotated(self.xRot / 16.0, 1.0, 0.0, 0.0)
gl.glRotated(self.yRot / 16.0, 0.0, 1.0, 0.0)
gl.glRotated(self.zRot / 16.0, 0.0, 0.0, 1.0)
gl.glCallList(self.object)
def resizeGL(self, width, height):
side = min(width, height)
if side < 0:
return
gl.glViewport((width - side) // 2, (height - side) // 2, side,
side)
gl.glMatrixMode(gl.GL_PROJECTION)
gl.glLoadIdentity()
gl.glOrtho(-3, 3, 3, -3, 4.0, 55.0)
gl.glMatrixMode(gl.GL_MODELVIEW)
立方体和圆柱体吃水
def main(self):
genList = gl.glGenLists(1)
gl.glNewList(genList, gl.GL_COMPILE)
glPushName(1)
glBegin(GL_QUADS)
glColor4f(0.0, 0.0, 1.0, 0.5)
glNormal3f(0.0, 0.0, 1.0) # Allows for light to reflect off certain parts of surface
glVertex3f(1.0, 0.0, 0.0)
glVertex3f(1.0, 1.0, 0.0)
glVertex3f(1.0, 1.0, 1.0)
glVertex3f(1.0, 0.0, 1.0)
glEnd()
# Back face - Green
glPushName(2)
glBegin(GL_QUADS)
glColor4f(0.0, 1.0, 0.0, 0.5)
glNormal3f(0.0, 0.0, -1.0)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(0.0, 1.0, 0.0)
glVertex3f(0.0, 1.0, 1.0)
glVertex3f(0.0, 0.0, 1.0)
glEnd()
# Left face - Red
glPushName(3)
glBegin(GL_QUADS)
glColor4f(1.0, 0.0, 0.0, 0.5)
glNormal3f(-1.0, 0.0, 0.0)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(1.0, 0.0, 0.0)
glVertex3f(1.0, 0.0, 1.0)
glVertex3f(0.0, 0.0, 1.0)
glEnd()
# Right face - Orange
glPushName(4)
glBegin(GL_QUADS)
glColor4f(1.0, 0.55, 0.0, 0.5)
glNormal3f(1.0, 0.0, 0.0)
glVertex3f(1.0, 1.0, 0.0)
glVertex3f(1.0, 1.0, 1.0)
glVertex3f(0.0, 1.0, 1.0)
glVertex3f(0.0, 1.0, 0.0)
glEnd()
# Top face - White
glPushName(5)
glBegin(GL_QUADS)
glColor4f(1.0, 1.0, 1.0, 1.0)
glNormal3f(0.0, 1.0, 0.0)
glVertex3f(0.0, 0.0, 1.0)
glVertex3f(1.0, 0.0, 1.0)
glVertex3f(1.0, 1.0, 1.0)
glVertex3f(0.0, 1.0, 1.0)
glEnd()
# Bottom face - Yellow
glPushName(6)
glBegin(GL_QUADS)
glColor4f(1.0, 1.0, 0.0, 1.0)
glNormal3f(0.0, -1.0, 0.0)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(0.0, 1.0, 0.0)
glVertex3f(1.0, 1.0, 0.0)
glVertex3f(1.0, 0.0, 0.0)
glEnd()
# Window on Front (Blue) Face
glPushName(7)
glBegin(GL_QUADS)
glColor4f(0.0, 1.0, 1.0, 0.4)
glNormal3f(0.0, 0.0, 1.0)
glVertex3f(1.0, 0.25, 0.25)
glVertex3f(1.0, 0.75, 0.25)
glVertex3f(1.0, 0.75, 0.75)
glVertex3f(1.0, 0.25, 0.75)
glEnd()
gluCylinder(self.quadric,0.4,0.4,0.3,16,1)
gl.glEndList()
return genList
def setClearColor(self, c):
gl.glClearColor(c.redF(), c.greenF(), c.blueF(), c.alphaF())
def setColor(self, c):
gl.glColor4f(c.redF(), c.greenF(), c.blueF(), c.alphaF())
def normalizeAngle(self, angle):
while angle < 0:
angle += 360 * 16
while angle > 360 * 16:
angle -= 360 * 16
return angle
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
结果如下：
我不知道如何解决这个问题，我将不胜感激任何帮助
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