OZ++ Sample: PyramidRotationByTimerThread |
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* PyramidRotationByTimerThread.cpp
*
*****************************************************************************/
//2017/01/16 Updated display method.
#include <oz++/Mutex.h>
#include <oz++/motif/RenderingTimer.h>
#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;
SmartPtr<RenderingTimer> timerThread;
int renderingInterval;
Mutex mutex;
public:
virtual void display()
{
mutex.lock();
angle += 0.2f;
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,
0.0f, 0.5f, 0.0f,
};
//Colors(RGBAs) for the 5 vertices
static GLfloat colors[] = {
0.0f, 0.0f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f, 1.0f,
0.0f, 1.0f, 0.0f, 1.0f,
1.0f, 0.0f, 0.0f, 1.0f
};
//Indices for the 4 triangles.
static GLint indices[] = {
2, 4, 3,
1, 4, 2,
0, 4, 1,
4, 0, 3
};
//Set a proportional perspective.
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);
} catch (Exception& ex) {
caught(ex);
}
mutex.unlock();
}
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 initialize()
{
gc.enable( GL_DEPTH_TEST );
timerThread = new RenderingTimer(this, renderingInterval);
timerThread -> start();
}
public:
SimpleView(OpenGLMainView* parent, const char* name, Args& args)
:OpenGLView(parent, name, args),
angle(0.0),
renderingInterval(0)
{
renderingInterval = (int)args.get(XmNrenderingInterval);
}
~SimpleView()
{
}
};
//Inner class ends.
private:
SmartPtr<SimpleView> view;
public:
MainView(OpenGLApplication& applet, const char* name, Args& args)
:OpenGLMainView(applet, name, args)
{
int interval = (int)args.get(XmNrenderingInterval);
Args ar;
ar.set(XmNrenderingInterval, interval);
ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType());
view = new SimpleView(this, "", ar);
}
~MainView()
{
}
};
}
//
int main(int argc, char** argv)
{
try {
XInitThreads();
const char* name = argv[0];
OpenGLApplication applet(name, argc, argv);
Args args;
args.set(XmNwidth, 400);
args.set(XmNheight, 300);
args.set(XmNrenderingInterval, 10); //10 millisec
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (Exception& ex) {
caught(ex);
}
return 0;
}