OZ++ Sample: CubeRotationByKeyInput |
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*
* Copyright (c) 2016 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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*
* CubeRotationByKeyInput.cpp
*
*****************************************************************************/
#include <oz++/opengl/OpenGLMainView.h>
#include <oz++/opengl/OpenGLView.h>
#include <oz++/opengl/OpenGLGC.h>
#include <oz++/opengl/OpenGLClientState.h>
namespace OZ {
class MainView :public OpenGLMainView {
private:
//Inner class starts.
class SimpleView: public OpenGLView {
private:
OpenGLGC gc;
float angle;
public:
virtual void display()
{
static GLfloat vertices[] = {
-0.5f, -0.5f, 0.5f,
0.5f, -0.5f, 0.5f,
0.5f, 0.5f, 0.5f,
-0.5f, 0.5f, 0.5f,
-0.5f, -0.5f, -0.5f,
0.5f, -0.5f, -0.5f,
0.5f, 0.5f, -0.5f,
-0.5f, 0.5f, -0.5f,
};
//Colors(RGBAs) for the 5 vertices
static GLfloat colors[] = {
1.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 1.0f,
1.0f, 1.0f, 1.0f,
};
//Indices for the 4 triangles.
static GLint 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,
};
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.perspective(16.0, (double)width() / (double)height(), 0.5, 100.0);
gc.matrixMode(GL_MODELVIEW);
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.loadIdentity();
gc.translate(0.0f,0.0f,-1.0f);
gc.lookAt(2.0, 4.0, 6.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
//Rotation around y-axis.
gc.rotate(angle, 0.0, 1.0, 0.0);
try {
OpenGLClientState state1(GL_VERTEX_ARRAY);
OpenGLClientState state2(GL_COLOR_ARRAY);
gc.vertexPointer(3, GL_FLOAT, 0, vertices);
gc.colorPointer (4, GL_FLOAT, 0, colors);
gc.drawElements(GL_TRIANGLES, SizeOf(indices), GL_UNSIGNED_INT, indices);
gc.flush();
} catch (Exception& ex) {
caught(ex);
}
}
virtual void resize(int w, int h)
{
if (w == 0 || h == 0) {
return;
}
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.perspective(16.0, (double)w / (double)h, 0.5, 40.0);
gc.matrixMode(GL_MODELVIEW);
}
virtual void keyPress(Event& event)
{
KeySym k = event.getKeySym();
if (k == XK_Left) {
angle -= 1.0f;
sendExposeEvent();
}
if (k == XK_Right) {
angle += 1.0f;
sendExposeEvent();
}
}
virtual void keyRelease(Event& event)
{
//Do nothing here
}
virtual void initialize()
{
gc.enable( GL_DEPTH_TEST );
}
public:
SimpleView(OpenGLMainView* parent, const char* name, Args& args)
:OpenGLView(parent, name, args),
angle(0.0)
{
}
~SimpleView()
{
}
};
//Inner class ends.
private:
SmartPtr<SimpleView> view;
public:
MainView(OpenGLApplication& applet, const char* name, Args& args)
:OpenGLMainView(applet, name, args)
{
Args ar;
ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType());
view = new SimpleView(this, "", ar);
}
~MainView()
{
}
};
}
//
int main(int argc, char** argv)
{
try {
const char* name = argv[0];
OpenGLApplication applet(name, argc, argv);
Args args;
args.set(XmNwidth, 400);
args.set(XmNheight, 300);
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (Exception& ex) {
caught(ex);
}
return 0;
}