/******************************************************************************
*
* 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
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* PNGTexture.cpp
*
*****************************************************************************/
//
#include <es++/opengl/OpenGLApplication.h>
#include <es++/opengl/OpenGLMainView.h>
#include <es++/opengl/OpenGLView.h>
#include <es++/opengl/OpenGLGC.h>
#include <es++/opengl/OpenGLTexture2D.h>
using namespace Gtk;
namespace Es {
class MainView :public Es::OpenGLMainView {
private:
///////////////////////////////////////////////////////
//Inner classes start.
class SimpleView :public Es::OpenGLView {
private:
OpenGLGC gc;
OpenGLTexture2D texture;
bool first_time;
public:
SimpleView()
:OpenGLView()
,first_time(true)
{
}
virtual void display()
{
gc.clearColor(1.0, 1.0, 1.0, 1.0);
gc.clear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gc.color(1.0, 1.0, 1.0);
if (first_time) {
gc.rotate(5.0, 0.5, 1.0, 0.25);
first_time = false;
}
glNormal3d(0.0, 0.0, 1.0);
gc.begin(GL_QUADS);
texture.coord(0.0, 0.0);
gc.vertex(-1.0, 1.0, 0.0);
texture.coord(1.0, 0.0);
gc.vertex( 1.0, 1.0, 0.0);
texture.coord(1.0, 1.0);
gc.vertex( 1.0, -1.0, 0.0);
texture.coord(0.0, 1.0);
gc.vertex(-1.0, -1.0, 0.0);
gc.end();
}
virtual void resize(int w, int h)
{
if (w == 0 || h == 0) {
return;
}
gc.matrixMode(GL_PROJECTION);
gc.loadIdentity();
gc.ortho(-1.25, 1.25, -1.25, 1.25, 1., 20.);
gc.matrixMode(GL_MODELVIEW);
gc.loadIdentity();
gc.lookAt(0., 0., 10., 0., 0., 0., 0., 1., 0.);
}
virtual void initialize()
{
gc.enable(GL_DEPTH_TEST);
gc.enable(GL_TEXTURE_2D);
texture.bind();
texture.parameter(GL_TEXTURE_MIN_FILTER, GL_LINEAR);
texture.parameter(GL_TEXTURE_MAG_FILTER, GL_LINEAR);
texture.env(GL_TEXTURE_ENV_MODE, GL_MODULATE);
//As you know, in general, an image width or height must be the power of 2.
const char* pngfile = "./images/LightedTorus.png";
//const char* pngfile = "./images/ChiChibuShrine.png";
//const char* pngfile = "./images/TokyoSkyTree.png";
try {
texture.imageFromPNGFile(pngfile);
} catch (Exception& ex) {
caught(ex);
}
}
};
// Inner classes end.
///////////////////////////////////////////////////////
Es::HorizontalLayout horiz_layout;
SimpleView simple_view;
public:
//////////////////////////////////////////////
//Constructor
//
MainView(Es::OpenGLApplication& applet, std::string& name, Es::Args& args)
:OpenGLMainView(applet, name, args)
{
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_opengl_context(context);
show_all_children();
}
void render()
{
simple_view.render();
}
};
}
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, 400);
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;
}