SOL4Py Samples

#******************************************************************************
#
#  Copyright (c) 2018-2019 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
#******************************************************************************

 
#  ScalableScrolledImageView.py

# encodig: utf-8

import sys

# 
sys.path.append('../')

from SOL4Py.opengl.ZOpenGLMainView import *

class MainView(ZOpenGLMainView):
  ##--------------------------------------------
  class OpenGLView(ZOpenGLView):

    def __init__(self, parent=None):
      self.parent = parent
      super(ZOpenGLView, self).__init__(parent)
      self.angle = 0


    def initializeGL(self):
      glEnable(GL_DEPTH_TEST)      
      glMatrixMode(GL_PROJECTION)
      glLoadIdentity()                    
      glMatrixMode(GL_MODELVIEW)

    def paintGL(self):
      glClear(GL_COLOR_BUFFER_BIT| GL_DEPTH_BUFFER_BIT)
      glClearColor(0.0, 0.0, 0.0, 0.0)
      glLoadIdentity()
      glTranslatef(0.0, 0.0, 0.0)
      gluLookAt(2.0, 4.0, 10.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0); 

      #
      vertices = [
      -0.5, -0.5,  0.5,
       0.5, -0.5,  0.5,
       0.5,  0.5,  0.5,
      -0.5,  0.5,  0.5,

      -0.5, -0.5, -0.5,
       0.5, -0.5, -0.5,
       0.5,  0.5, -0.5,
      -0.5,  0.5, -0.5
      ]
    
      #Colors(RGBs) for the 5 vertices
      colors = [ 
        1.0, 0.0, 0.0,
        0.0, 1.0, 0.0,
        0.0, 0.0, 1.0,
        1.0, 1.0, 1.0,

        1.0, 0.0, 0.0,
        0.0, 1.0, 0.0,
        0.0, 0.0, 1.0,
        1.0, 1.0, 1.0
      ]
  
      #Indices for the 4 triangles.
      indices = [ 
        0, 1, 2,  2, 3, 0,
        3, 2, 6,  6, 7, 3,
        7, 6, 5,  5, 4, 7,
        4, 5, 1,  1, 0, 4,
        4, 0, 3,  3, 7, 4,
        1, 5, 6,  6, 2, 1
      ]

      #Rotation around y-axis.
      glRotate(self.angle, 0.0, 1.0, 0.0);
      
      glEnableClientState(GL_VERTEX_ARRAY); 
      glEnableClientState(GL_COLOR_ARRAY);

      #glPolygonMode(GL_FRONT_AND_BACK, GL_LINE)

      glVertexPointer(3, GL_FLOAT, 0, vertices);
      glColorPointer (3, GL_FLOAT, 0, colors);
      dindices = np.array(indices, "int32")         
      glDrawElements(GL_TRIANGLES, len(indices), GL_UNSIGNED_INT, dindices);

      glFlush()


    def resizeGL(self, width, height):
      side = min(width, height)
      if side < 0: return
      glViewport(0, 0, width, height)
      glMatrixMode(GL_PROJECTION)
      glLoadIdentity()
      gluPerspective(16.0, width / height, 0.5, 40.0)

      glMatrixMode(GL_MODELVIEW);


    def keyPressEvent(self, event):
      if event.key() == Qt.Key_Left:
        self.angle = self.angle - 2.0
      if event.key() == Qt.Key_Right:
        self.angle = self.angle + 2.0
      
      self.update()
      
  ##--------------------------------------------


  # MainView Constructor
  def __init__(self, title, x, y, width, height):
    super(ZOpenGLMainView, self).__init__(title, x, y, width, height)

    # 1 Create first imageview.
    self.opengl_view = self.OpenGLView(self)

    # 2 Add the image view to a main_layout of this main view.
    self.add(self.opengl_view)
     
    self.show()


  def keyPressEvent(self, event):
    self.opengl_view.keyPressEvent(event)


#*************************************************
#    
if main(__name__):

  try:
    app_name  = os.path.basename(sys.argv[0])
    applet    = QApplication(sys.argv)
  
    main_view = MainView(app_name, 40, 40, 600, 380)
    main_view.show ()

    applet.exec_()

  except:
    traceback.print_exc()