OZ++ Sample: LightedTriangleRotationByKeyInput |
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*
* Copyright (c) 2016 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
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*
* LightedTriangleRotationByKeyInput.cpp
*
*****************************************************************************/
#include <oz++/opengl/OpenGLMainView.h>
#include <oz++/opengl/OpenGLView.h>
#include <oz++/opengl/OpenGLGC.h>
#include <oz++/opengl/OpenGLLight.h>
#include <oz++/opengl/OpenGLMaterial.h>
#include <oz++/opengl/Vertex3.h>
#include <oz++/opengl/Color4.h>
#include <oz++/opengl/FaceIndices.h>
#include <oz++/opengl/OpenGLClientState.h>
#include <oz++/opengl/OpenGLTriangleSurfaces.h>
namespace OZ {
class MainView :public OpenGLMainView {
private:
//Inner class starts.
class SimpleView: public OpenGLView {
private:
OpenGLGC gc;
float angle;
SmartPtr<OpenGLTriangleSurfaces> surfaces;
Normal3* normals;
size_t numNormals;
virtual void display()
{
static Vertex<3> vertices[] = {
//Face 1:
{-1.0,-1.0, 1.0 }, //0
{ 1.0,-1.0, 1.0 }, //1
{ 0.0, 1.0, 1.0 }, //2
};
static Color4 colors[] = {
{1.0f, 0.4f, 0.2f, 1.0f},
};
static FaceIndices<3> indices[] = {
{0, 1, 2} //Triangle
};
if (surfaces == NULL) {
surfaces = new OpenGLTriangleSurfaces(vertices, SizeOf(vertices), indices, SizeOf(indices));
normals = surfaces->calculateSurfaceNormals(numNormals);
}
if (normals) {
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.loadIdentity();
gc.matrixMode(GL_MODELVIEW);
gc.clearColor(0.0, 1.0, 1.0, 1.0);
gc.translate(0.0f,0.0f,-1.0f);
gc.lookAt(2.0, 4.0, 10.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
gc.rotate(angle, 0.0, 1.0, 0.0);
try {
gc.enable(GL_LIGHTING);
OpenGLLight light(GL_LIGHT0);
light.position(0, 0.0, 1.0, 0.0);
GLfloat white[] = {1.0f, 1.0f, 1.0f, 1.0f};
GLfloat blue[] = {0.0f, 0.0f, 1.0f, 1.0f};
GLfloat shininess[] = {40.0};
OpenGLMaterial material(GL_FRONT);
material.diffuse(blue);
material.specular(white);
material.shininess(shininess);
gc.frontFace(GL_CCW);
gc.enable(GL_CULL_FACE);
//Draw the front.
gc.cullFace(GL_BACK);
for (int i = 0; i< SizeOf(indices); i++) {
gc.begin(GL_TRIANGLES);
FaceIndices<3> tri = indices[i];
gc.draw(colors[i], normals[i],
vertices[ tri.index[0] ], vertices[ tri.index[1] ], vertices[ tri.index[2] ]);
gc.end();
}
//Draw the back.
gc.cullFace(GL_FRONT);
for (int i = 0; i< SizeOf(indices); i++) {
gc.begin(GL_TRIANGLES);
FaceIndices<3> tri = indices[i];
gc.draw(colors[i], normals[i],
vertices[ tri.index[0] ], vertices[ tri.index[1] ], vertices[ tri.index[2] ]);
gc.end();
}
} 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 initialize()
{
gc.enable( GL_DEPTH_TEST );
}
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
}
public:
SimpleView(OpenGLMainView* parent, const char* name, Args& args)
:OpenGLView(parent, name, args),
angle(0.0f)
{
}
~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;
}