source: trunk/VUT/work/TestCulling/SceneContentGenerator.cpp @ 104

/**
    \file 
        SceneContentGenerator.cpp
    \brief
        Creates content for a scene.
*/
#include "SceneContentGenerator.h"

namespace Ogre {

/*******************************************************/
/*     SceneContentGenerator implementation            */
/*******************************************************/

//-----------------------------------------------------------------------
SceneContentGenerator::SceneContentGenerator(SceneManager *sm):
mSceneMgr(sm), mCount(0),
mMinPos(Vector3(-70.0f, -70.0f, 0.0f)),
mMaxPos(Vector3(70.0f, 70.0f, 600.0f)), 
mMinAngle(Vector3(0.0f, 0.0f, 0.0f)),
mMaxAngle(Vector3(360, 360, 360)),
mScale(0.1, 0.1, 0.1)
{
}
//-----------------------------------------------------------------------
void SceneContentGenerator::GenerateScene(int numObjects, const String &objName)
{
        // initialise random generator
        srand (time(0));
        
        Vector3 rotationRatio;
        Vector3 translationRatio;

        int currentCount = mCount;
        int limit = 0;

        //-- create random values between zero and one
        while ((mCount - currentCount < numObjects) && (limit < 50000))
        {
                rotationRatio.x = rand() / (float) RAND_MAX;
                rotationRatio.y = rand() / (float) RAND_MAX;
                rotationRatio.z = rand() / (float) RAND_MAX;

                translationRatio.x = rand() / (float) RAND_MAX;
                translationRatio.y = rand() / (float) RAND_MAX;
                translationRatio.z = rand() / (float) RAND_MAX;

                // Setup the ray scene query
                Vector3 rotation = mMinAngle + rotationRatio * (mMaxAngle - mMinAngle);
                Vector3 position = mMinPos + translationRatio * (mMaxPos - mMinPos);

                (void)GenerateSceneObject(position, rotation, objName);
                ++limit; // just in case: to avoid endless loop
        }
}
//-----------------------------------------------------------------------
SceneNode *SceneContentGenerator::GenerateSceneObject(const Vector3 &position, 
                                         const Vector3 &rotation, const String& objName)
{
        char name[25];
        sprintf(name, "Entity%d", mCount++);
                
        Entity *ent = mSceneMgr->createEntity(name, objName);
                
        SceneNode *currentObject = mSceneMgr->getRootSceneNode()->
                createChildSceneNode(String(name) + "Node", position);

        currentObject->attachObject(ent);
        currentObject->setScale(mScale);
                
        currentObject->yaw(Degree(rotation.x));
        currentObject->pitch(Degree(rotation.y));
        currentObject->roll(Degree(rotation.z));

        return currentObject;
}
//-----------------------------------------------------------------------
void SceneContentGenerator::SetMinAngle(Vector3 minAngle)
{
        mMinAngle = minAngle;
}
//-----------------------------------------------------------------------
void SceneContentGenerator::SetMaxAngle(Vector3 maxAngle)
{
        mMaxAngle = maxAngle;
}
//-----------------------------------------------------------------------
void SceneContentGenerator::SetMinPos(Vector3 minPos)
{
        mMinPos = minPos;
}
//-----------------------------------------------------------------------
void SceneContentGenerator::SetMaxPos(Vector3 maxPos)
{
        mMaxPos = maxPos;
}
//-----------------------------------------------------------------------
int SceneContentGenerator::GetObjectCount()
{
        return mCount;
}
//-----------------------------------------------------------------------
void SceneContentGenerator::SetScale(Vector3 scale)
{
        mScale = scale;
}
} // namespace Ogre