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/>.
#
#******************************************************************************

 
#  SharpendImageTexture.py

# encodig: utf-8

import sys

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

from SOL4Py.opengl.ZOpenGLMainView import *
from SOL4Py.opengl.ZOpenGLTexture2D import *
from SOL4Py.opengl.ZOpenGLImageInfo import *
from SOL4Py.opencv.ZOpenCVImageReader import *
from SOL4Py.opencv.ZOpenCVImageInfo import *


class MainView(ZOpenGLMainView):
  ##--------------------------------------------
  class OpenGLView(ZOpenGLView):
    
    def __init__(self, parent=None):
      self.parent = parent
      super(ZOpenGLView, self).__init__(parent)
      self.angle = 120
      self.texture  = None


    def initializeGL(self):
      glEnable(GL_DEPTH_TEST);
      glEnable(GL_TEXTURE_2D);

      self.texture = ZOpenGLTexture2D();
      reader = ZOpenCVImageReader();
      filename = "../images/Figure.png"; 
      
      image = reader.read(filename);
      self.sharpend = self.sharpen(image);
      self.texture.bind();
      
      self.imageToTexture(self.sharpend)

      self.texture.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
      self.texture.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
      self.texture.env(GL_TEXTURE_ENV_MODE, GL_MODULATE); 

      self.texture.unbind()


    def sharpen(self, image):  # originalImage = cv2.Mat  
      ksize  =  21
      sigma  = 12
    
      blurred = cv2.GaussianBlur(image, (ksize, ksize), 
            float(sigma), #sigmaX, 
            float(sigma), #sigmaY
            cv2.BORDER_DEFAULT)

      alpha = 2.5
      beta  = 1.0 - alpha
      return cv2.addWeighted(image, alpha, blurred, beta, 0.0)
      

    def imageToTexture(self, image):
      cvImageInfo = ZOpenCVImageInfo()
      imageInfo   =   cvImageInfo.getImageInfo(image);
      self.texture.imageFromImageInfo(imageInfo);


    def paintGL(self):
        
      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
      glClearColor(1.0, 1.0, 1.0, 1.0);
          
      glMatrixMode(GL_MODELVIEW);
      glLoadIdentity();
      gluLookAt(2.0, 4.0, 6.0, 0., 0., 0., 0., 1., 0.);

      #glRotate(30.0, 0.0, 0.0, 1.0);

      self.texture.bind()

      glBegin(GL_QUADS);


      glTexCoord2f(0.0, 0.0)
      glVertex(-1.0,  1.0, 0.0);

      glTexCoord2f(1.0, 0.0)
      glVertex( 1.0,  1.0, 0.0);

      glTexCoord2f(1.0, 1.0)
      glVertex( 1.0, -1.0, 0.0);

      glTexCoord2f(0.0, 1.0)
      glVertex(-1.0, -1.0, 0.0);


      glEnd();
      
      self.texture.bind()
      
      glFlush()


    def resizeGL(self, width, height):
      if width == 0 or height == 0:
        return
      glViewport(0, 0, width, height)
      glMatrixMode(GL_PROJECTION)
      glLoadIdentity()
      gluPerspective(16.0, width/height, 0.5, 100)
      glMatrixMode(GL_MODELVIEW)


  ##--------------------------------------------
  
  
  # 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()



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

  try:
    glutInit(sys.argv)
    
    app_name  = os.path.basename(sys.argv[0])
    applet    = QApplication(sys.argv)
  
    main_view = MainView(app_name, 40, 40, 480, 480)
    main_view.show ()

    applet.exec_()

  except:
    traceback.print_exc()