wxpythonpyopengl
adding wxGLCanvas to wxPanel problem
I'm trying to integrate OpenGL into a simple wx application. So I googled around and found a working example of a class that extends wxGLCanvas and draws a sphere that works. However this is added to the main frame:
frame = wxFrame(None,-1,'ball_wx',wxDefaultPosition,wxSize(400,400))
canvas = myGLCanvas(frame)
But I want to have some buttons and menus on the side so I tried adding the canvas with no succes so far. My approach is :
firstSizer = wx.BoxSizer(wx.VERTICAL)
sizerForSplit = wx.BoxSizer(wx.HORIZONTAL)
sizerForSplit.Add(self.label, 0, 0, 0)
sizerForSplit.Add(self.glCanvasPanel, 1, wx.EXPAND, 0)
firstSizer.Add(sizerForSplit, 1, wx.EXPAND, 0)
self.SetSizer(firstSizer)
canvas = myGLCanvas(self.glCanvasPanel)
panelSizer = wx.BoxSizer(wx.HORIZONTAL)
panelSizer.Add(canvas, 0, wx.ALIGN_CENTER|wx.ALL, 15)
self.glCanvasPanel.SetSizer(panelSizer)
self.Layout()
So the label and panel are displayed but the canvas is not. What am I missing ?
regards, Bogdan
Solution
Here is an example with some buttons on the side. Hope that helps:
from OpenGL.GLUT import *
from OpenGL.GLU import *
from OpenGL.GL import *
from wx.glcanvas import GLCanvas
import wx
#===================================================================================================
class myGLCanvas(GLCanvas):
def __init__(self, *args, **kwargs):
GLCanvas.__init__(self, *args, **kwargs)
self.Bind(wx.EVT_PAINT, self.OnPaint)
self.Bind(wx.EVT_SIZE, self.OnResize)
self.Bind(wx.EVT_LEFT_DOWN, self.OnLeftDown)
self.Bind(wx.EVT_RIGHT_DOWN, self.OnRightDown)
self.Bind(wx.EVT_LEFT_UP, self.OnLeftUp)
self.Bind(wx.EVT_RIGHT_UP, self.OnRightUp)
self.Bind(wx.EVT_MOTION, self.OnMouse)
self.init = False
self.width, self.height = self.GetSize()
self.alpha = 0
self.beta = 0
self.distance = 5.0
self.oldX = 0
self.oldY = 0
self.leftDown = False
self.rightDown = False
self.axes = False
#-----------------------------------------------------------------------------------------------
def Axes(self, allow):
self.axes = allow
#-----------------------------------------------------------------------------------------------
def OnDraw(self):
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, (0.5, 0.5, 1.0, 1.0))
glutSolidSphere(0.5, 20, 20)
if self.axes:
self.ShowAxes()
self.SwapBuffers()
#-----------------------------------------------------------------------------------------------
def ChangeView(self):
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslate(0.0, 0.0, -self.distance)
glRotate(-90, 0.0, 1.0, 0.0)
glRotate(-90, 1.0, 0.0, 0.0)
glRotate(self.alpha, 0.0, 0.0, 1.0)
glRotate(self.beta, 0.0, 1.0, 0.0)
self.OnDraw()
#-----------------------------------------------------------------------------------------------
def Resize(self):
ratio = float(self.width) / self.height;
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glViewport(0, 0, self.width, self.height)
gluPerspective(45, ratio, 1, 1000)
self.ChangeView()
#-----------------------------------------------------------------------------------------------
def OnPaint(self, event):
wx.PaintDC(self)
self.SetCurrent()
if not self.init:
self.InitGL()
self.init = True
self.OnDraw()
#-----------------------------------------------------------------------------------------------
def OnLeftDown(self, event):
self.oldX, self.oldY = event.GetPosition()
self.leftDown = True
def OnRightDown(self, event):
self.oldX, self.oldY = event.GetPosition()
self.rightDown = True
def OnLeftUp(self, event):
self.leftDown = False
def OnRightUp(self, event):
self.rightDown = False
def OnMouse(self, event):
if self.leftDown or self.rightDown:
X, Y = event.GetPosition()
if self.rightDown:
self.distance += (Y - self.oldY) * 0.05
if self.leftDown:
self.alpha += (X - self.oldX) * 0.5
self.beta += (Y - self.oldY) * 0.5
self.ChangeView()
self.oldX, self.oldY = X, Y
#-----------------------------------------------------------------------------------------------
def OnResize(self, e):
self.width, self.height = e.GetSize()
self.Resize()
#-----------------------------------------------------------------------------------------------
def ShowAxes(self):
glDisable(GL_LIGHTING)
glColor3f(1.0, 1.0, 0.0)
glRasterPos3f(1.2, 0.0, 0.0)
glutBitmapCharacter(GLUT_BITMAP_9_BY_15, ord('x'))
glRasterPos3f(0.0, 1.2, 0.0)
glutBitmapCharacter(GLUT_BITMAP_9_BY_15, ord('y'))
glRasterPos3f(0.0, 0.0, 1.2)
glutBitmapCharacter(GLUT_BITMAP_9_BY_15, ord('z'))
glColor3f(1.0, 0.0, 0.0)
glBegin(GL_QUADS)
glVertex3f(0, 0, 0)
glVertex3f(1, 0, 0)
glVertex3f(1, 1, 0)
glVertex3f(0, 1, 0)
glEnd()
glColor3f(0.0, 1.0, 0.0)
glBegin(GL_QUADS)
glVertex3f(0, 0, 0)
glVertex3f(0, 0, 1)
glVertex3f(0, 1, 1)
glVertex3f(0, 1, 0)
glEnd()
glColor3f(0.0, 0.0, 1.0)
glBegin(GL_QUADS)
glVertex3f(0, 0, 0)
glVertex3f(1, 0, 0)
glVertex3f(1, 0, 1)
glVertex3f(0, 0, 1)
glEnd()
glEnable(GL_LIGHTING)
#-----------------------------------------------------------------------------------------------
def InitGL(self):
glLightfv(GL_LIGHT0, GL_DIFFUSE, (0.8, 0.8, 0.8, 1.0))
glLightfv(GL_LIGHT0, GL_AMBIENT, (0.2, 0.2, 0.2, 1.0))
glLightfv(GL_LIGHT0, GL_POSITION, (1.0, 1.0, 1.0, 0.0))
glEnable(GL_LIGHT0)
# glShadeModel(GL_SMOOTH)
glEnable(GL_LIGHTING)
glEnable(GL_DEPTH_TEST)
glClearColor(0.0, 0.0, 0.0, 1.0)
glClearDepth(1.0)
self.Resize()
#===================================================================================================
class ToolPanel(wx.Panel):
def __init__(self, parent, canvas, *args, **kwargs):
wx.Panel.__init__(self, parent, *args, **kwargs)
self.canvas = canvas
self.button1 = wx.Button(self, label="TEXT 1")
self.button2 = wx.Button(self, label="TEXT 2")
self.check1 = wx.CheckBox(self, label="Show Axes")
self.Bind(wx.EVT_CHECKBOX, self.Check1)
self.sizer = wx.BoxSizer(wx.VERTICAL)
self.sizer.Add(self.button1, flag=wx.BOTTOM, border=5)
self.sizer.Add(self.button2, flag=wx.BOTTOM, border=5)
self.sizer.Add(self.check1)
self.border = wx.BoxSizer()
self.border.Add(self.sizer, flag=wx.ALL | wx.EXPAND, border=5)
self.SetSizerAndFit(self.border)
#-----------------------------------------------------------------------------------------------
def Check1(self, e):
self.canvas.Axes(e.Checked())
self.canvas.OnDraw()
#===================================================================================================
class MainWin(wx.Frame):
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, title='OpenGL', *args, **kwargs)
self.canvas = myGLCanvas(self, size=(640, 480))
self.panel = ToolPanel(self, canvas=self.canvas)
self.sizer = wx.BoxSizer()
self.sizer.Add(self.canvas, 1, wx.EXPAND)
self.sizer.Add(self.panel, 0, wx.EXPAND)
self.SetSizerAndFit(self.sizer)
self.Show()
#===================================================================================================
app = wx.App(False)
main_win = MainWin(None)
app.MainLoop()
