OZ++ Sample: MipmapTexture |
/******************************************************************************
*
* Copyright (c) 2015 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.
*
*
* JPGMipmapTexture.cpp
*
*****************************************************************************/
//2015/07/28 Updated
#include <oz++/opengl/OpenGLMainView.h>
#include <oz++/opengl/OpenGLView.h>
#include <oz++/opengl/OpenGLGC.h>
#include <oz++/opengl/OpenGLTexture2D.h>
#include <oz++/motif/FileDialog.h>
namespace OZ {
class MainView :public OpenGLMainView {
private:
//Inner class starts
class SimpleView: public OpenGLView {
private:
OpenGLGC gc;
SmartPtr<OpenGLTexture2D> texture;
public:
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);
gc.rotate(5.0, 0.5, 1.0, 0.25);
gc.normal(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);
createTexture("./images/tulip.jpg");
}
public:
void createTexture(const char* filename)
{
if (texture) {
texture = NULL;
}
texture = new OpenGLTexture2D();
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);
try {
texture->mipmapFromFile(filename);
} catch (Exception& ex) {
caught(ex);
}
}
public:
SimpleView(OpenGLMainView* parent, const char* name, Args& args)
:OpenGLView(parent, name, args)
{
}
~SimpleView()
{
}
};
//Inner class ends.
private:
SmartPtr<SimpleView> view;
SmartPtr<FileDialog> fileDialog;
private:
virtual void fileMenu(Action& action)
{
int menuId = action.getClientIntData();
printf("menuId %d\n", menuId);
if (menuId == OPEN) {
fileDialog->manage();
} else {
OpenGLMainView::fileMenu(action);
}
}
virtual void ok(Action& action)
{
XmFileSelectionBoxCallbackStruct* cbs =
(XmFileSelectionBoxCallbackStruct*)action.getCallData();
StringT<char> filename;
CompoundString cs(cbs->value, filename);
printf("filename: %s\n", (const char*)filename);
view -> createTexture((const char*)filename);
unmap();
map();
fileDialog -> unmanage();
}
void cancel(Action& action)
{
fileDialog -> unmanage();
}
public:
MainView(OpenGLApplication& applet, const char* name, Args& args)
:OpenGLMainView(applet, name, args),
view(NULL)
{
Args ar;
ar.set(XmNopenGLBufferType, (XtArgVal)getBufferType());
view = new SimpleView(this, "", ar);
ar.reset();
fileDialog = new FileDialog(this, "", ar);
fileDialog -> getFileBox()
-> addCallback(XmNokCallback, this,
(Callback)&MainView::ok, NULL);
fileDialog -> getFileBox()
-> addCallback(XmNcancelCallback, this,
(Callback)&MainView::cancel, NULL);
}
~MainView()
{
}
};
}
//
int main(int argc, char** argv)
{
try {
const char* name = argv[0];
OpenGLApplication applet(name, argc, argv);
Args args;
args.set(XmNwidth, 640);
args.set(XmNheight, 360);
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (Exception& ex) {
caught(ex);
}
return 0;
}