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//
// Copyright 2018 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// Based on Hello_Triangle.c from
// Book: OpenGL(R) ES 2.0 Programming Guide
// Authors: Aaftab Munshi, Dan Ginsburg, Dave Shreiner
// ISBN-10: 0321502795
// ISBN-13: 9780321502797
// Publisher: Addison-Wesley Professional
// URLs: http://safari.informit.com/9780321563835
// http://www.opengles-book.com
#include "SampleApplication.h"
#include <GLES/gl.h>
#include <GLES/glext.h>
#include <algorithm>
class SimpleLightingSample : public SampleApplication
{
public:
SimpleLightingSample(EGLint displayType)
: SampleApplication("SimpleLightingSample", 1280, 720, 1, 0, displayType)
{
}
virtual bool initialize()
{
glClearColor(0.4f, 0.3f, 0.2f, 1.0f);
mRotDeg = 0.0f;
return true;
}
virtual void destroy() {}
virtual void draw()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glColor4f(0.2f, 0.6f, 0.8f, 1.0f);
GLfloat mat_ambient[] = {0.7f, 0.4f, 0.2f, 1.0f};
GLfloat mat_specular[] = {0.5f, 0.5f, 0.5f, 1.0f};
GLfloat mat_diffuse[] = {0.3f, 0.4f, 0.6f, 1.0f};
GLfloat lightpos[] = {0.0f, 1.0f, 0.0f, 0.0f};
GLfloat normals[] = {
-0.4f, 0.4f, -0.4f, -0.4f, -0.4f, -0.4f, 0.2f, 0.0f, -0.4f,
-0.4f, 0.4f, 0.4f, -0.4f, -0.4f, 0.4f, 0.2f, 0.0f, 0.4f,
};
GLfloat vertices[] = {
-0.5f, 0.5f, 0.0f, -0.5f, -0.5f, 0.0f, 0.5f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.3f, -0.5f, -0.5f, 0.3f, 0.5f, 0.0f, 0.3f,
};
GLuint indices[] = {
0, 1, 2, 3, 4, 5,
0, 4, 3, 4, 0, 1,
4, 1, 2, 2, 5, 4,
5, 2, 3, 3, 2, 0,
};
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, vertices);
glNormalPointer(GL_FLOAT, 0, normals);
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 3; j++)
{
glPushMatrix();
glTranslatef(-0.6f + i * 0.6f, -0.6f + j * 0.6f, 0.0f);
glRotatef(mRotDeg + (10.0f * (3.0f * i + j)), 0.0f, 1.0f, 0.0f);
glRotatef(20.0f + (20.0f * (3.0f * i + j)), 1.0f, 0.0f, 0.0f);
GLfloat scale = 0.5;
glScalef(scale, scale, scale);
glDrawElements(GL_TRIANGLES, 3 * 8, GL_UNSIGNED_INT, indices);
glPopMatrix();
}
}
mRotDeg += 0.03f;
}
private:
float mRotDeg;
};
int main(int argc, char **argv)
{
EGLint displayType = EGL_PLATFORM_ANGLE_TYPE_DEFAULT_ANGLE;
if (argc > 1)
{
displayType = GetDisplayTypeFromArg(argv[1]);
}
SimpleLightingSample app(displayType);
return app.run();
}
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