SOL9 Sample: PNGMipmapTexture
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1 Screenshot
2 Source code
/*
* PNGMipmapTexture.cpp
* Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*/
//2015/08/22
#include <sol/opengl/OpenGLMainView.h>
#include <sol/opengl/OpenGLView.h>
#include <sol/opengl/OpenGLGC.h>
#include <sol/opengl/OpenGLTexture2D.h>
#include <sol/FileDialog.h>
namespace SOL {
class MainView :public OpenGLMainView {
private:
//Inner class starts
class SimpleView: public OpenGLView {
private:
SmartPtr<OpenGLGC> gc;
SmartPtr<OpenGLTexture2D> texture;
public:
virtual void display()
{
if (gc && texture) {
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);
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;
}
if (gc) {
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 = new OpenGLGC();
gc -> enable(GL_DEPTH_TEST);
gc -> enable(GL_TEXTURE_2D);
createTexture("./images/LightedTorus.png");
}
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);
//As you know, in general, an image width or height must be the power of 2.
try {
texture -> mipmapFromPNGFile(filename);
} catch (Exception& ex) {
caught(ex);
}
}
public:
SimpleView(View* parent, const char* name, Args& args)
:OpenGLView(parent, name, args)
{
}
~SimpleView()
{
}
};
//Inner class ends
private:
SmartPtr<SimpleView> view;
SmartPtr<FileDialog> fileDialog;
private:
virtual void open(Action& action)
{
fileDialog -> popup(action);
if (action.getResult()) {
char* filename = fileDialog -> getFileName();
if (String::endsWithIgnoreCase(filename, ".png")) {
view -> createTexture(filename);
view -> refresh();
} else {
showMessageDialog("Invalid File", filename, MB_ICONINFORMATION|MB_OK);
}
}
}
private:
long size(Event& event)
{
int w, h;
event.getSize(w, h);
if (view) {
view -> reshape(0, 0, w, h);
view -> postResizeRequest(w, h);
}
return 1L;
}
public:
MainView(Application& applet, const char* name, Args& args)
:OpenGLMainView(applet, name, args),
view(NULL)
{
Args ar;
view = new SimpleView(this, "", ar);
ar.reset();
ar.set(XmNaccessMode, FileDialog::OPEN);
fileDialog = new FileDialog(this, "", ar);
}
~MainView()
{
delete view;
delete fileDialog;
}
};
}
//
void Main(int argc, char** argv)
{
try {
const char* name = appName(argv[0]);
Application applet(name, argc, argv);
Args args;
args.set(XmNwidth, 500);
args.set(XmNheight, 400);
MainView view(applet, name, args);
view.realize();
applet.run();
} catch (Exception& ex) {
caught(ex);
}
}
Last modified: 25 Feb 2017
Copyright (c) 2017 Antillia.com ALL RIGHTS RESERVED.