Kezdeti teendőkLetöltés: OgreBillboardParticles.zipKicsomagolFuttat: OgreBillboardParticles.slnInclude és library útvonalak beállításaWorking directory beállításaFordítFuttat

Próba

Új file: Tree.h#include "Ogre.h"

using namespace Ogre;

class BillboardTree{public:

BillboardTree(Vector3 position, SceneManager* sm){

static int id = 0;

SceneNode* billboardNode = sm->getRootSceneNode()->createChildSceneNode();

BillboardSet *treeBillboardSet = sm->createBillboardSet("treeBillboard" +

StringConverter::toString(id), 1);billboardNode->attachObject(treeBillboardSet);

treeBillboardSet->setDefaultDimensions(47,66);treeBillboardSet->setBillboardType(BBT_ORIENTED_COMMON);treeBillboardSet->setBillboardOrigin(BBO_BOTTOM_CENTER);treeBillboardSet->setCommonDirection(Vector3::UNIT_Y);Billboard* bb = treeBillboardSet->createBillboard(position);treeBillboardSet->setMaterialName("TreeBillboard");

id++;}

};

Új material file: Tree.materialmaterial TreeBillboard{

technique{

pass{

lighting offtexture_unit{

texture tree.pngfiltering anisotropic

}}

}}

OgreBillboardParticles.cppVoid setupScene(){…

sceneManager->setSkyBox(true, "Sky", 10, true);

new BillboardTree(Vector3::ZERO, sceneManager);

}

Próba

material TreeBillboard{

technique{

pass{

lighting offscene_blend alpha_blendtexture_unit{

texture tree.pngfiltering anisotropic

}}

}}

Próba

Sok fanew BillboardTree(Vector3::ZERO, sceneManager);Helyett:

for(int i = 0; i < 30; i ++){

Vector3 pos = Vector3(Math::RangeRandom(-60,60),

0,Math::RangeRandom(-60,60));

new BillboardTree(pos, sceneManager);}

Próba

material TreeBillboard{

technique{

pass{

depth_write offlighting offscene_blend alpha_blendtexture_unit{

texture tree.pngfiltering anisotropic

}}

}}

Próba

Átlátszó objektumok rendezéseOldjuk meg hogy ne legyen hiba a

rendezésben:A fa színtérgráf-csomópontját toljuk el és ne a

plakátot a billboardset-benAlakítsuk át a kódot úgy, hogy csak egy

billboardset legyen és ebbe fűzzük az összes plakátot. Figyelni kell:RendezésCullingPool (billboardset maximális mérete)

Megoldásclass BillboardTree{

static BillboardSet* treeBillboardSet;public:

BillboardTree(Vector3 position, SceneManager* sm){

if(treeBillboardSet == 0){

treeBillboardSet = sm->createBillboardSet("treeBillboards", 20);treeBillboardSet->setMaterialName("TreeBillboard");SceneNode* billboardSetNode =

sm->getRootSceneNode()->createChildSceneNode();

billboardSetNode->attachObject(treeBillboardSet);treeBillboardSet->setDefaultDimensions(47,66);treeBillboardSet-

>setBillboardType(BBT_ORIENTED_COMMON);treeBillboardSet->setBillboardOrigin(BBO_BOTTOM_CENTER);treeBillboardSet->setCommonDirection(Vector3::UNIT_Y);treeBillboardSet->setCullIndividually(true);treeBillboardSet->setSortingEnabled(true);treeBillboardSet->setAutoextend(true);

}Billboard* bb = treeBillboardSet->createBillboard(position);

}};BillboardSet* BillboardTree::treeBillboardSet = 0;

Próba

Bonyolultabb faclass BillBoardCloudTree{public:

BillBoardCloudTree(Vector3 position, SceneManager* sm){

static int id = 0;

SceneNode* treeNode = sm->getRootSceneNode()->createChildSceneNode();treeNode->setPosition(position);treeNode->rotate(Vector3::UNIT_Y, Radian(Math::RangeRandom(0,Math::PI *

2)));Entity* trunk = sm->createEntity("treetrunk"+StringConverter::toString(id),

"treetrunk.mesh");treeNode->attachObject(trunk);

id++;}

};

for(int i = 0; i < 30; i ++){ Vector3 pos = Vector3(Math::RangeRandom(-60,60), 0, Math::RangeRandom(-60,60)); new BillBoardCloudTree(pos, sceneManager);}

Tree.material: új anyagjellemzőmaterial TreeTrunk{

technique{

pass{

lighting offtexture_unit{

texture oakbark.jpgfiltering anisotropic

}}

}}

Próba

BillBoardCloudTree(Vector3 position, SceneManager* sm){

static int id = 0;

SceneNode* treeNode = sm->getRootSceneNode()->createChildSceneNode();treeNode->setPosition(position);treeNode->rotate(Vector3::UNIT_Y, Radian(Math::RangeRandom(0,Math::PI * 2)));Entity* trunk = sm->createEntity("treetrunk"+StringConverter::toString(id), "treetrunk.mesh");treeNode->attachObject(trunk);

BillboardSet* billboardCloud = sm->createBillboardSet("treebbcloud"+StringConverter::toString(id));treeNode->attachObject(billboardCloud);billboardCloud->setBillboardType(BBT_PERPENDICULAR_SELF);billboardCloud->setMaterialName("TreeLeaves");billboardCloud->setSortingEnabled(true);

for(int i = 0; i < 10; i++){

float h = Math::RangeRandom(25,60);Vector3 pos(0,h,0);Vector3 dir(Math::RangeRandom(-0.6f,0.6f),1,Math::RangeRandom(-0.6f,0.6f));dir.normalise();Billboard* bb = billboardCloud->createBillboard(pos);bb->setDimensions(90.0f - h, 90.0f - h);bb->mDirection = dir;

}

id++;}

Tree.material: új anyagjellemzőmaterial TreeLeaves{

technique{

pass{

depth_write offlighting offscene_blend alpha_blendcull_hardware nonetexture_unit{

texture leaves.tgafiltering none

}}

}}

Próba

Részecske Rendszerek

int _tmain(int argc, _TCHAR* argv[]){

ogreRoot = new Root("","");#ifdef _DEBUG

ogreRoot->loadPlugin("RenderSystem_Direct3D9_d");ogreRoot->loadPlugin("Plugin_OctreeSceneManager_d");ogreRoot->loadPlugin("Plugin_ParticleFX_d");

#elseogreRoot->loadPlugin("RenderSystem_Direct3D9");ogreRoot->loadPlugin("Plugin_OctreeSceneManager");ogreRoot->loadPlugin("Plugin_ParticleFX");

#endif

Plugin_ParticleFX.dll és Plugin_ParticleFX_d.dll másolása bin-be OgreSDK/bin-ből

Új file: Particles.h#include "Ogre.h"using namespace Ogre;

class PSysFromScript{public:

PSysFromScript(Vector3 position, SceneManager* sm, String scriptname){

static int id = 0;SceneNode* sysNode = sm->getRootSceneNode()-

>createChildSceneNode();ParticleSystem* psys = sm-

>createParticleSystem("psys"+StringConverter::toString(id), scriptname);sysNode->attachObject(psys);sysNode->setPosition(position);id++;

}

};

Új file a media-ba: example.particle

particle_system Example1{ material Flare particle_width 10 particle_height 10 quota 10000 billboard_type point

emitter Point {

angle 15 emission_rate 75 time_to_live 2 direction 0 1 0 velocity_min 50 velocity_max 100 colour_range_start 1 0 0 colour_range_end 0 0 1 }}

Új material file: Particles.materialmaterial Flare{

technique{

pass{

scene_blend addlighting offdepth_write offtexture_unit{

texture flare.png}

}}

}

OgreBillboardParticles.cpp…#include ” Particles.h”…

void setupScene(){

…new SysFromScript(Vector3(0,0,25),sceneManager,"Example1");

}

Próba

Feladat

Játszunk a scriptel…:

Emitter-ekAffector-ok

Segít az Ogre manual!!!

Pl.:

particle_system Example1{ material Flare particle_width 5 particle_height 5 quota 1000 billboard_type point

emitter Box {

width 120depth 5height 120position 0 2.5 0angle 0emission_rate 75 time_to_live 2

direction 0 1 0 velocity_min 5 velocity_max 10 colour_range_start 1 0 0 0 colour_range_end 0 0 1 0 } affector ColourFader2 { state_change 1

alpha1 1alpha2 -1

}}

material Flare{

technique{

pass{

scene_blend src_alpha onelighting offdepth_write offtexture_unit{

texture flare.png

}}

}}