sl@0: // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: /**
sl@0:  @file
sl@0:  @test
sl@0:  @internalComponent
sl@0: */
sl@0: 
sl@0: #include "t_pseudoappopenglanimation.h"
sl@0: 
sl@0: /** Vertex co-ordinates for a cube */
sl@0: const GLfloat KVertexArray[] = {	-10.0f,  10.0f,  10.0f,
sl@0: 									 10.0f,  10.0f,  10.0f,
sl@0: 									-10.0f, -10.0f,  10.0f,
sl@0: 									 10.0f, -10.0f,  10.0f,
sl@0: 									-10.0f,  10.0f, -10.0f,
sl@0: 									 10.0f,  10.0f, -10.0f,
sl@0: 									-10.0f, -10.0f, -10.0f,
sl@0: 									 10.0f, -10.0f, -10.0f };
sl@0: 
sl@0: /** Left, near, top co-ordinate index */
sl@0: const GLubyte LNT = 0;
sl@0: /** Right, near, top co-ordinate index */
sl@0: const GLubyte RNT = 1;
sl@0: /** Left, far, top co-ordinate index */
sl@0: const GLubyte LFT = 2;
sl@0: /** Right, far, top co-ordinate index */
sl@0: const GLubyte RFT = 3;
sl@0: /** Left, near, bottom co-ordinate index */
sl@0: const GLubyte LNB = 4;
sl@0: /** Right, near, bottom co-ordinate index */
sl@0: const GLubyte RNB = 5;
sl@0: /** Left, far, bottom co-ordinate index */
sl@0: const GLubyte LFB = 6;
sl@0: /** Right, far, bottom co-ordinate index */
sl@0: const GLubyte RFB = 7;
sl@0: /** Number of indicies per face */
sl@0: const TInt KNumFaceIndices = 6;
sl@0: 
sl@0: /** Array of indicies into vertex array to define a cube */
sl@0: const GLubyte KIndexArray[] = {	RNB, LNB, LFB, RNB, LFB, RFB,
sl@0: 								RNB, RFB, RFT, RNB, RFT, RNT,
sl@0: 								LNB, RNB, RNT, LNB, RNT, LNT,
sl@0: 								LFB, LNB, LNT, LFB, LNT, LFT,
sl@0: 								RFB, LFB, LFT, RFB, LFT, RFT,
sl@0: 								LNT, RNT, RFT, LNT, RFT, LFT };
sl@0: 
sl@0: 
sl@0: COpenGLAnimation* COpenGLAnimation::NewL(RWindow* aWin, const TDisplayMode& aMode, const TSize& aSurfaceSize,
sl@0: 																		  const TInt aHorizontalRate,
sl@0: 																		  const TInt aVerticalRate)
sl@0: 	{
sl@0: 	RDebug::Print(_L("Creating COpenGLAnimation class\n"));
sl@0:     COpenGLAnimation* self = new (ELeave) COpenGLAnimation(aMode,aSurfaceSize,aHorizontalRate,aVerticalRate);
sl@0:     CleanupStack::PushL(self);
sl@0:     self->ConstructL(aWin);
sl@0:     CleanupStack::Pop(); // self;
sl@0:     return self;
sl@0: 	}
sl@0: 
sl@0: COpenGLAnimation::COpenGLAnimation(const TDisplayMode& aMode, const TSize& aSurfaceSize, const TInt aHorizontalRate, const TInt aVerticalRate)
sl@0: : CEglBase(aMode,aSurfaceSize,aHorizontalRate,aVerticalRate)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: void COpenGLAnimation::ConstructL(RWindow* aWin)
sl@0: 	{
sl@0: 	BaseConstructL(aWin);
sl@0: 
sl@0: 	// eglBindAPI
sl@0: 	TInt ret = eglBindAPI(EGL_OPENGL_ES_API);
sl@0: 	TestL(ret, _L("eglBindAPI failed"));
sl@0: 
sl@0: 	__ASSERT_DEBUG(iUseConfig>0, User::Panic(_L("COpenGLAnimation"), KErrArgument));
sl@0: 
sl@0: 	// eglCreateContext
sl@0: 	iContext = eglCreateContext(iDisplay, iUseConfig, EGL_NO_CONTEXT, NULL);
sl@0: 	TestL(iContext!=EGL_NO_CONTEXT, _L("eglCreateContext failed"));
sl@0: 
sl@0: 	// Make surface and context current on the display object
sl@0: 	ret = eglMakeCurrent(iDisplay, iSurface, iSurface, iContext);
sl@0: 	TestL(ret, _L("eglMakeCurrent failed"));
sl@0: 
sl@0: 	CheckGlErrorL(_L("GL_Problems creating second surface"));
sl@0: 	}
sl@0: 
sl@0: COpenGLAnimation::~COpenGLAnimation()
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: /** Draws a cube using OpenGLES commands */
sl@0: void COpenGLAnimation::DrawToEglL()
sl@0: 	{
sl@0: 	// Increment rotation variable
sl@0: 	iRotAngle += 15;
sl@0: 
sl@0: 	// Set half-transparent drawing value
sl@0: 	const GLfloat KAlphaValue = 0.5f;
sl@0: 
sl@0: 	// Remove hidden faces
sl@0: 	glEnable(GL_CULL_FACE);
sl@0: 	glCullFace(GL_FRONT);
sl@0: 
sl@0: 	// Use a flat shading model
sl@0: 	glShadeModel(GL_FLAT);
sl@0: 
sl@0: 	// Set the projection parameters
sl@0: 	glMatrixMode(GL_PROJECTION);
sl@0: 	glLoadIdentity();
sl@0: 	glFrustumf(-0.154f, 0.154f, -0.0577f, 0.0577f, 0.1f, 100.0f);
sl@0: 
sl@0: 	// Set the cube position
sl@0: 	glMatrixMode(GL_MODELVIEW);
sl@0: 	glLoadIdentity();
sl@0: 	// Move position away from viewpoitn
sl@0: 	glTranslatef(iX+=iHorizontalRate, 0.0f, -50.0f);
sl@0: 
sl@0: 	// Rotate 45 degrees about the z-axis
sl@0: 	glRotatef(45.0f, 0.0f, 0.0f, 1.0f);
sl@0: 	// Rotate iX degrees about the y- and z-axes
sl@0: 	glRotatef(iRotAngle, 0.0f, 1.0f, 1.0f);
sl@0: 
sl@0: 	// Clear the buffer
sl@0: 	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
sl@0: 	glClear(GL_COLOR_BUFFER_BIT);
sl@0: 
sl@0: 	// Enable vertex processing
sl@0: 	glEnableClientState(GL_VERTEX_ARRAY);
sl@0: 
sl@0: 	// Set the vertex array to use
sl@0: 	glVertexPointer(3, GL_FLOAT, 0, KVertexArray);
sl@0: 
sl@0: 	const GLubyte* faceIndex = KIndexArray;
sl@0: 
sl@0: 	// Process cube faces
sl@0: 	for (TInt face = 1; face <= 6; face++)
sl@0: 		{
sl@0: 		const GLfloat red = (face < 2 || face > 4) ? 1.0f : 0;
sl@0: 		const GLfloat green = (face > 0 && face < 4) ? 1.0f : 0;
sl@0: 		const GLfloat blue = (face > 2) ? 1.0f : 0;
sl@0: 		// Set colour to draw in
sl@0: 		glColor4f(red, green, blue, KAlphaValue);
sl@0: 		// Draw the vertices that make up each face as two triangles
sl@0: 		glDrawElements(GL_TRIANGLES, KNumFaceIndices, GL_UNSIGNED_BYTE, faceIndex);
sl@0: 		faceIndex += KNumFaceIndices;
sl@0: 		}
sl@0: 
sl@0: 	// Flush colour buffer to the window surface
sl@0: 	eglSwapBuffers(iDisplay, iSurface);
sl@0: 	}
sl@0: 
sl@0: void COpenGLAnimation::DrawL(CTestSurfaceRasterizer*  /*aSurfaceRasterizer*/, SurfaceDetails& /*aSurfDetails*/)
sl@0: 	{
sl@0: 	DrawToEglL();
sl@0: 	}
sl@0: 
sl@0: void COpenGLAnimation::CheckGlErrorL(const TDesC& aMessage)
sl@0: 	{
sl@0: 	GLenum err=glGetError();
sl@0: 	if ( err != GL_NO_ERROR )
sl@0: 		{
sl@0: 		RDebug::Print(_L("Error:0x%x - %S"),err,&aMessage);
sl@0: 		User::Leave(KErrUnknown);
sl@0: 		}
sl@0: 	}