Salut,
Voici une petite fenêtre avec plein de paramètres pour modifier et tester des paramètres affectant l'atmosphère.
Ca peut permettre de comprendre comment ils interagisent entre eux.
Pour tester, créez un répertoire dans le dossier examples, et copiez-y
main.cpp dont le code ci-dessous (commentaires en anglais dsl),
le makefileheightmaptextureCa donne ça (avec des ombres très marquées et, ... Sous linux):
// main.cpp
#include <irrlicht.h>
#include <iostream>
using namespace irr;
using namespace core;
using namespace gui;
// Contains all environnment settings
typedef struct {
scene::ISceneNode* LIGHTENV;
vector3df Pos;
f32 Radius;
video::SColorf Ambient;
video::SColor Diffuse;
video::SColor Fog;
f32 FogStart;
f32 FogEnd; // fog not activated if 0
f32 FogStrength;
} ENV;
ENV *env;
// Main window dimensions
u32 WIDTH = 600;
u32 HEIGHT = 500;
IrrlichtDevice *device;
scene::ITerrainSceneNode* terrain;
/*------------------------------------------------------------------------------
Apply Env settings.
1) Obtain values from GUI controls, store them in the structure
2) Apply these values onto irrlicht objects.
------------------------------------------------------------------------------*/
void apply_env_settings()
{
f32 r,g,b;
u32 ur,ug,ub;
stringc s;
IGUIEnvironment* guienv = device->getGUIEnvironment();
IGUIElement* root = guienv->getRootGUIElement();
// Pos.X
s = root->getElementFromId(111, true)->getText();
env->Pos.X = (f32)atof(s.c_str());
// Pos.Y
s = root->getElementFromId(121, true)->getText();
env->Pos.Y = (f32)atof(s.c_str());
// Pos.Z
s = root->getElementFromId(131, true)->getText();
env->Pos.Z = (f32)atof(s.c_str());
// Radius
s = root->getElementFromId(141, true)->getText();
env->Radius = (f32)atof(s.c_str());
// Ambient.R
s = root->getElementFromId(162, true)->getText();
r = (f32)atof(s.c_str());
// Ambient.G
s = root->getElementFromId(163, true)->getText();
g = (f32)atof(s.c_str());
// Ambient.B
s = root->getElementFromId(164, true)->getText();
b = (f32)atof(s.c_str());
env->Ambient = video::SColorf(10, r,g,b);
// Diffuse.R
s = root->getElementFromId(172, true)->getText();
ur = (u32)atoi(s.c_str());
// Diffuse.G
s = root->getElementFromId(173, true)->getText();
ug = (u32)atoi(s.c_str());
// Diffuse.B
s = root->getElementFromId(174, true)->getText();
ub = (u32)atoi(s.c_str());
env->Diffuse = video::SColor(0, ur,ug,ub);
// Fog Start
s = root->getElementFromId(211, true)->getText();
env->FogStart = (f32)atof(s.c_str());
// Fog End
s = root->getElementFromId(216, true)->getText();
env->FogEnd = (f32)atof(s.c_str());
// Fog.R
s = root->getElementFromId(222, true)->getText();
ur = (u32)atoi(s.c_str());
// Fog.G
s = root->getElementFromId(232, true)->getText();
ug = (u32)atoi(s.c_str());
// Fog.B
s = root->getElementFromId(242, true)->getText();
ub = (u32)atoi(s.c_str());
env->Fog = video::SColor(1, ur,ug,ub);
// Fog Strength
s = root->getElementFromId(219, true)->getText();
env->FogStrength = (f32)atof(s.c_str());
// now apply values
scene::ISceneManager* smgr = device->getSceneManager();
// Light environment
if (env->LIGHTENV) env->LIGHTENV->remove();
env->LIGHTENV = smgr->addLightSceneNode(0,
env->Pos,
env->Ambient,
env->Radius);
// terrain
video::SMaterial *mat= &terrain->getMaterial(0);
mat->FogEnable=(env->FogEnd > 0);
mat->Lighting=true;
mat->EmissiveColor= env->Diffuse;
// fog
video::IVideoDriver* driver = device->getVideoDriver();
driver->setFog(env->Fog, true, env->FogStart, env->FogEnd,
env->FogStrength, false, true);
}
/*------------------------------------------------------------------------------
Handle Events
------------------------------------------------------------------------------*/
class MyEventReceiver : public IEventReceiver
{
public:
virtual bool OnEvent(SEvent event)
{
if (event.EventType == EET_GUI_EVENT)
{
if (event.GUIEvent.EventType == EGET_BUTTON_CLICKED)
{
apply_env_settings();
return true;
}
}
return false;
}
};
/*------------------------------------------------------------------------------
Create Tool Window. Takes screen size as parameter.
Here are set hard-coded default values for env settings.
------------------------------------------------------------------------------*/
void createToolsWindow(IrrlichtDevice *device, u32 HEIGHT, u32 WIDTH)
{
IGUIEnvironment* guienv = device->getGUIEnvironment();
// create window
IGUIWindow* wnd = guienv->addWindow(rect<s32>(100,HEIGHT-200, 400,HEIGHT-10),
false, L"Env Settings", 0, 5000);
// add tab control
IGUITabControl* tabs = guienv->addTabControl( rect<s32>(2,20,297,186),
wnd, true, true);
IGUIElement* root = guienv->getRootGUIElement();
/* Tab1: LIGHT
+---------------+ --------------
| Light | Fog |
---------------------------------------------------------
| X: 95584.222 Y: 6523.2 Z: 232.2 |
| Radius: 2000 |
| R G B |
| Ambient: 200 210 10 |
| Diffuse 10 10 230 APPLY |
| |
--------------------------------------------------------- */
IGUITab* t1 = tabs->addTab(L"Light");
// X: 0000.000
guienv->addStaticText (L"X:",rect<s32>(10,10,30,30),false,true,t1,110,false);
guienv->addEditBox (L"0000.0",rect<s32>(30,10,90,30),true,t1,111);
// Y: 0000.000
guienv->addStaticText (L"Y:",rect<s32>(100,10,130,30),false,true,t1,120,false);
guienv->addEditBox (L"1000.0",rect<s32>(130,10,190,30),true,t1,121);
// Z: 0000.000
guienv->addStaticText (L"Z:",rect<s32>(200,10,230,30),false,true,t1,130,false);
guienv->addEditBox (L"0000.0",rect<s32>(220,10,280,30),true,t1,131);
// Radius: 0000.000
guienv->addStaticText (L"Radius",rect<s32>(10,40,70,60),false,true,t1,140,false);
guienv->addEditBox (L"1000", rect<s32>(70,40,140,60),true,t1,141);
// R,G,B
guienv->addStaticText (L"R",rect<s32>(70 ,70,100,86),true,true,t1,151,false);
guienv->addStaticText (L"G",rect<s32>(100,70,130,86),true,true,t1,152,false);
guienv->addStaticText (L"B",rect<s32>(130,70,160,86),true,true,t1,153,false);
//Ambient
guienv->addStaticText (L"Ambient",rect<s32>(10,86,70,102),true,true,t1,161,false);
guienv->addEditBox (L"255",rect<s32>(70 ,86,100,102),true,t1,162);
guienv->addEditBox (L"10" ,rect<s32>(100,86,130,102),true,t1,163);
guienv->addEditBox (L"1" ,rect<s32>(130,86,160,102),true,t1,164);
//Diffuse
guienv->addStaticText (L"Diffuse",rect<s32>(10,102,70,118),true,true,t1,171,false);
guienv->addEditBox (L"100",rect<s32>(70 ,102,100,118),true,t1,172);
guienv->addEditBox (L"200",rect<s32>(100,102,130,118),true,t1,173);
guienv->addEditBox (L"100",rect<s32>(130,102,160,118),true,t1,174);
//Apply Button
guienv->addButton(rect<s32>(190,80,280,118),t1,1101,L"Apply");
/* Tab2: FOG
-------------- +---------------+
| Light | Fog |
---------------------------------------------------------
| Start: 1000 End: 6000 |
| Strength: 2000 |
| |
| R G B |
| 10 211 255 |
| |
--------------------------------------------------------- */
IGUITab* t2 = tabs->addTab(L"Fog");
// Fog Start
guienv->addStaticText (L"Start:",rect<s32>(10,10,70,30),false,true,t2,210,false);
guienv->addEditBox (L"1000",rect<s32>(70,10,140,30),true,t2,211);
// Fog End
guienv->addStaticText (L"End:",rect<s32>(150,10,210,60),false,true,t2,215,false);
guienv->addEditBox (L"3000",rect<s32>(200,10,270,30),true,t2,216);
// Fog Strength
guienv->addStaticText (L"Strength:",rect<s32>(10,40,70,60),false,true,t2,218,false);
guienv->addEditBox (L"0.001",rect<s32>(70,40,140,60),true,t2,219);
// Fog R
guienv->addStaticText (L"R",rect<s32>(70,70,140,90),true,true,t2,221,false);
guienv->addEditBox (L"255",rect<s32>(70,90,140,110),true,t2,222);
// Fog G
guienv->addStaticText (L"G",rect<s32>(140,70,200,90),true,true,t2,231,false);
guienv->addEditBox (L"222",rect<s32>(140,90,200,110),true,t2,232);
// Fog B
guienv->addStaticText (L"B",rect<s32>(200,70,270,90),true,true,t2,241,false);
guienv->addEditBox (L"166",rect<s32>(200,90,270,110),true,t2,242);
}
/*------------------------------------------------------------------------------
Create env window with tabs
------------------------------------------------------------------------------*/
void create_env_window()
{
video::IVideoDriver* driver = device->getVideoDriver();
// create window for Env settings
createToolsWindow (device, HEIGHT, WIDTH);
// set a nicer font
IGUIEnvironment* guienv = device->getGUIEnvironment();
IGUISkin* skin = guienv->getSkin();
IGUIFont* font = guienv->getFont("../../media/fonthaettenschweiler.bmp");
if (font) skin->setFont(font);
}
/*------------------------------------------------------------------------------
Load Terrain
------------------------------------------------------------------------------*/
video::ITexture* load_scene()
{
// [Load heightmap]
video::IVideoDriver* driver = device->getVideoDriver();
scene::ISceneManager* smgr = device->getSceneManager();
terrain = smgr->addTerrainSceneNode("0003.png");
terrain->setScale(vector3df(256, 12, 256));
terrain->setMaterialTexture(0, driver->getTexture("texture.png"));
terrain->scaleTexture(64, 64);
// [Skybox]
smgr->addSkyBoxSceneNode(
driver->getTexture("../../media/irrlicht2_up.jpg"),
driver->getTexture("../../media/irrlicht2_dn.jpg"),
driver->getTexture("../../media/irrlicht2_lf.jpg"),
driver->getTexture("../../media/irrlicht2_rt.jpg"),
driver->getTexture("../../media/irrlicht2_ft.jpg"),
driver->getTexture("../../media/irrlicht2_bk.jpg"));
// [Cam]
scene::ICameraSceneNode* camera;
camera = smgr->addCameraSceneNodeMaya();
camera->setPosition(vector3df(1000,1500,1000));
camera->setTarget (vector3df(2000,1000,2000));
// [Irrlicht logo]
video::ITexture* irrLogo =
driver->getTexture("../../media/irrlichtlogoaligned.jpg");
return irrLogo;
}
/*------------------------------------------------------------------------------
Entry point
------------------------------------------------------------------------------*/
int main()
{
// create irrlicht device
MyEventReceiver receiver;
device = createDevice(video::EDT_OPENGL,
dimension2d<s32>(WIDTH, HEIGHT),
16, false, false, false, &receiver);
if (!device) return 1;
video::IVideoDriver* driver = device->getVideoDriver();
scene::ISceneManager* smgr = device->getSceneManager();
IGUIEnvironment* guienv = device->getGUIEnvironment();
device->setResizeAble(true);
driver->setTextureCreationFlag(video::ETCF_ALWAYS_32_BIT, true);
// Init stuff
device->setWindowCaption(L"Irrlicht Engine - Loading...");
// Create GUI tool window, tabs and controls, fill controls with
// hard-coded default values for env settings
create_env_window();
// Load terrain
video::ITexture* irrLogo = load_scene();
if (!irrLogo) return 1;
// now that terrain is created, get env values from controls to pass them
// into the structure, to apply them
env = new ENV;
apply_env_settings();
device->setWindowCaption(L"ENV settings");
// Main loop
while(device->run())
{
if (device->isWindowActive())
{
driver->beginScene(true, true,0);
smgr->drawAll();
guienv->drawAll();
driver->draw2DImage(irrLogo, position2d<s32>(10, 10),rect<s32>(0,0,88,31));
driver->endScene();
}
}
device->drop();
delete env;
return 0;
}
