New Paste :: Recent Pastes:: Add Line Numbers
Disappearing GL scene by metimmee
Scene disappears after about 3 mins?? ================================ void CMainWindow::DrawGLScene() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); ///////////////////BEGIN PPI DRAW AND TEXTURE FILL ROUTINE float vectorY1,vectorX1,originY,originX,vectorX,vectorY,radius,angle; float DegreesPerSector = 360.0f/1024.0f; float slice=1.0f/1024.0f; float incslice=slice; float PPIScanAngle = 360.0f; float CircleStartAngle = 45.0f; float CircleEndAngle = CircleStartAngle+PPIScanAngle; originX = 1.7f;//1.7f originY = 0.0f;//0.0f radius = 4.30f;//4.3f vectorY1=originY; vectorX1=originX; //Take an array of 1024 x 1024 x 4 (checkImage) and fill it with noise and symbology prior to overwriting texture NoisyTextureTest(); glTranslatef(0.0f,0.0f,-12.0f); glPolygonMode( GL_BACK, GL_FILL); glPolygonMode( GL_FRONT, GL_FILL); glColor3f (1.0, 1.0, 1.0); glEnable(GL_TEXTURE_2D); glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0,1024, 1024, GL_RGBA,GL_UNSIGNED_BYTE, checkImage); glBindTexture(GL_TEXTURE_2D, texture[0]); glBegin(GL_TRIANGLES); for(float i=CircleStartAngle;i<=CircleEndAngle;i=i+DegreesPerSector) { //Draw a number of triangles to create a circle //Fill each triangle with a single row of pixels from the texture // angle=(float)(((double)i)/57.29577957795135); vectorX=originX+(radius*(float)sin((double)angle)); vectorY=originY+(radius*(float)cos((double)angle)); glTexCoord2f(0.0f,slice);//LHS glVertex2d(originX,originY); glTexCoord2f(1.0f,slice);//top right glVertex2d(vectorX1,vectorY1); glTexCoord2f(1.0f,slice);//bottom right glVertex2d(vectorX,vectorY); vectorY1=vectorY; vectorX1=vectorX; slice=slice+incslice; } glEnd(); /////////////////////////////////////////////////////////////// /////////////END PPI DRAW AND TEXTURE FILL ROUTINE glDisable(GL_TEXTURE_2D); //BEGIN DRAW BACKGROUND BOX glColor3f (0.1f, 0.1f, 0.1f); glBegin(GL_QUADS); glVertex3f (-2.75f, -4.5f, -0.5f); glVertex3f (2.75f+radius, -4.5f, -0.5f); glVertex3f (2.75f+radius, 4.5f, -0.5f); glVertex3f (-2.75f, 4.5f, -0.5f); glEnd(); //END DRAW BACKGROUND BOX SwapBuffers(clientDC->m_hDC); }
