progressbar

[emadof85]

I'm using irrlicht GUI and i need something like progress bar or any thing else when loading a model or scene
please help me

[CuteAlien]

Those are 2 problems really. First is gui - if you use Irrlicht svn trunk you can use IGUIImage::setDrawBounds to use that element like a progressbar (where progress can go in all directions).

The other problem is harder - you would need progress information while loading a model and you can't get that so easy. So you can do progress bars if you load lots of models and update it in between - but hard to get feedback for loading a single model.

[emadof85]

I will load a lot of models , can you give me an example for loading window

[CuteAlien]

I can only repeat myself from above. It's not in Irrlicht 1.8, but if you use Irrlicht svn trunk then you can use IGUIImage::setDrawBounds. That function documented and if there are problems with the documentation I'm glad to improve it. If you need an example for it's use you can check this file: https://code.google.com/p/irr-playgroun ... _image.cpp - just copy it over one of the examples (only Irrlicht trunk!).

For the loading itself - not sure what I could show you there. You just load a model. Show a little bit more of the image. Load the next model, etc.

[Ruxify]

Here's an example code of how I would do it (tested and working):

Code: Select all

#include <iostream>
#include <irrlicht.h>
#include <cstdlib>
 
using namespace std;
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;
 
int main()
{
    //Start Irrlicht.
    IrrlichtDevice* irrdevice = createDevice(EDT_OPENGL, dimension2d<u32>(800,100),
                                             32,
                                             false,
                                             false,
                                             false);
    if(!irrdevice)
    {
        cout << "Irrlicht failed to start!\n";
        return 1;
    }
    irrdevice->setWindowCaption(L"Progress Bar Test");
 
    ITimer* irrtimer = irrdevice->getTimer();
    IVideoDriver* irrvd = irrdevice->getVideoDriver();
 
    //Create some variables to calculate bar percentage.
    int current_file = 0; //Current amount of files loaded.
    int max_file_count = 2000; //Total amount of files.
    u32 f_time = 50; //Time in MS between each file "load".
    u32 t_save = irrtimer->getTime(); //Use this to calculate how much time has passed.
 
    //Render loop.
    while(irrdevice->run())
    {
        irrvd->beginScene(true, true, SColor(0,0,0,0)); //Draw blackness.
 
        //Update file count.
        u32 n_time = irrtimer->getTime();
        if(n_time - t_save >= f_time)
        {
            current_file++;
            t_save = n_time;
        }
 
        //Draw the bar.
        float percentage = ((float)current_file / (float)max_file_count);
        int bar_length = round(percentage * 800);
        irrvd->draw2DRectangle(rect<s32>(0,0,bar_length,100),
                               SColor(255,255,0,0),
                               SColor(255,255,0,0),
                               SColor(255,50,0,0),
                               SColor(255,50,0,0));
 
        //Update the window title to include the percentage.
        stringw n_title = "Progress Bar Test - ";
        n_title += (int)round(percentage * 100);
        n_title += "%";
        irrdevice->setWindowCaption(n_title.c_str());
 
        //If complete, leave the program.
        if(current_file >= max_file_count)
        {
            break;
        }
 
        irrvd->endScene(); //Display render.
    }
 
    //Drop the engine.
    irrdevice->drop();
    return 0;
}