| Es++ Sample: VertexAndIndexBufferARB |
/******************************************************************************
*
* Copyright (c) 2017 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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*
* VertexAndIndexBufferARB.cpp
*
*****************************************************************************/
//
#include <es++/opengl/OpenGLApplication.h>
#include <es++/opengl/OpenGLMainView.h>
#include <es++/opengl/OpenGLView.h>
#include <es++/opengl/OpenGLGC.h>
#include <es++/opengl/OpenGLLight.h>
#include <es++/opengl/OpenGLMaterial.h>
#include <es++/opengl/ColorNormalVertex.h>
#include <es++/opengl/OpenGLVertex3.h>
#include <es++/opengl/OpenGLClientState.h>
#include <es++/openglarb/OpenGLVertexBufferARB.h>
#include <es++/openglarb/OpenGLIndexBufferARB.h>
#include <es++/opengl2/OpenGLVertexAttribute.h>
#include <es++/gtkmm-3.0/FileOpenDialog.h>
using namespace Gtk;
namespace Es {
class MainView :public Es::OpenGLMainView {
private:
///////////////////////////////////////////////////////
//Inner class starts.
class SimpleView :public Es::OpenGLView {
private:
OpenGLGC gc;
SmartPtr<OpenGLVertexBufferARB> vertexBuffer;
SmartPtr<OpenGLIndexBufferARB> indexBuffer;
int numVertices;
int numIndices;
public:
SimpleView()
:OpenGLView()
{
}
void display()
{
if (vertexBuffer && indexBuffer) {
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.loadIdentity();
try {
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);
gc.clearColor(1.0f, 0.8f, 0.8f, 1.0f);
//OpenGLClientState constructor enables its argument, and the destructor disables its argument.
OpenGLClientState state1(GL_VERTEX_ARRAY);
OpenGLClientState state2(GL_COLOR_ARRAY);
OpenGLClientState state3(GL_NORMAL_ARRAY);
const GLfloat lightPosition[] = { 5.0, 5.0, -8.0 , 1.0 };
const GLfloat lightColor[] = { 1.0, 0.0, 0.0 , 1.0 };
const GLfloat materialColor[] = { 0.8, 0.8, 0.4 , 1.0 };
OpenGLLight light(GL_LIGHT0);
light.position(lightPosition);
light.diffuse(lightColor);
light.enable();
OpenGLMaterial material(GL_FRONT_AND_BACK );
material.diffuse(materialColor);
vertexBuffer -> bind();
indexBuffer -> bind();
gc.interleavedArrays(GL_C4F_N3F_V3F, 0, NULL);
gc.drawElements(GL_QUADS, numIndices, GL_UNSIGNED_INT, NULL);
vertexBuffer -> unbind();
indexBuffer -> unbind();
} 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 );
/*
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.frustum(1 , -1 , -1 , 1 , 1 , 10);
gc.clearColor(0.0, 0.0, 1.0, 1.0);
*/
try {
static ColorNormalVertex<float,4,3,3> vertices[] = {
{ 0.5f, 0.0f, 0.0f, 0.5f, -0.6f, 0.6f, 0.6f, -0.5f, 0.5f, 0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, -0.6f, -0.6f, 0.6f, -0.5f, -0.5f, 0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, 0.6f, 0.6f, 0.6f, 0.5f, 0.5f, 0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, 0.6f, -0.6f, 0.6f, 0.5f, -0.5f, 0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, 0.6f, 0.6f, -0.6f, 0.5f, 0.5f, -0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, 0.6f, -0.6f, -0.6f, 0.5f, -0.5f, -0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, -0.6f, 0.6f, -0.6f, -0.5f, 0.5f, -0.5f },
{ 0.5f, 0.0f, 0.0f, 0.5f, -0.6f, -0.6f, -0.6f, -0.5f, -0.5f, -0.5f },
};
static GLuint indices[] = {
0, 2, 3, 1,
2, 4, 5, 3,
4, 6, 7, 5,
6, 0, 1, 7,
6, 4, 2, 0,
1, 3, 5, 7,
};
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.loadIdentity();
numVertices = SizeOf(vertices);
vertexBuffer = new OpenGLVertexBufferARB();
vertexBuffer -> bind();
vertexBuffer -> data(//sizeof(vertices),
numVertices*sizeof(ColorNormalVertex<float,4,3,3>),
vertices, GL_STATIC_DRAW_ARB);
vertexBuffer -> unbind();
numIndices = SizeOf( indices );
indexBuffer = new OpenGLIndexBufferARB();
indexBuffer -> bind();
indexBuffer -> data(numIndices*4, indices, GL_STATIC_DRAW_ARB);
indexBuffer -> unbind();
} catch (Exception& ex) {
caught(ex);
}
}
};
// Inner class ends.
///////////////////////////////////////////////////////
Es::HorizontalLayout horiz_layout;
Es::VerticalLayout control_pane;
SimpleView simple_view;
Es::FileOpenDialog file_dialog;
public:
//////////////////////////////////////////////
//Constructor
//
MainView(Es::OpenGLApplication& applet, std::string& name, Es::Args& args)
:OpenGLMainView(applet, name, args)
,file_dialog(*this, Es::FileOpenDialog::IMAGE_FILES)
{
int w = (int)args.get(XmNwidth);
int h = (int)args.get(XmNheight);
Es::MainLayout& main_layout = get_main_layout();
main_layout.pack_start(horiz_layout);
horiz_layout.pack_start(simple_view);
OpenGLContext* context = applet.getOpenGLContext();
simple_view.set_opacity (0.5);
simple_view.set_opengl_context(context);
simple_view.set_size_request(400, 400);
show_all_children();
}
void render()
{
simple_view.render();
}
void file_open()
{
int rc = file_dialog.popup();
if (rc == Gtk::RESPONSE_OK) {
const std::string filename = file_dialog.get_filename();
}
}
};
}
int main(int argc, char** argv)
{
Es::Environment env;
try {
std::string name = argv[0];
Es::OpenGLApplication applet(argc, argv);
Es::Args args;
args.set(XmNx, 20);
args.set(XmNy, 40);
args.set(XmNwidth, 500);
args.set(XmNheight,400);
Es::MainView mainv(applet, name, args);
mainv.show();
applet.run(mainv);
} catch (Es::Exception& ex) {
caught(ex);
} catch (...) {
printf("Get exception \n");
}
return 0;
}