[107] | 1 | #include "OgreTerrainContentGenerator.h"
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| 2 |
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| 3 | #define MAX_HEIGHT 5000 // maximal possible height
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| 4 |
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| 5 | namespace Ogre {
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| 6 |
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| 7 | /*************************************************/
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| 8 | /* RayQueryExecutor implementation */
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| 9 | /*************************************************/
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| 10 |
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| 11 | //-----------------------------------------------------------------------
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| 12 | RayQueryExecutor::RayQueryExecutor(SceneManager *sm)
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| 13 | {
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| 14 | mRaySceneQuery = sm->createRayQuery(Ray());
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| 15 | }
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| 16 | //-----------------------------------------------------------------------
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| 17 | RayQueryExecutor::~RayQueryExecutor()
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| 18 | {
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| 19 | delete mRaySceneQuery;
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| 20 | }
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| 21 | //-----------------------------------------------------------------------
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| 22 | bool RayQueryExecutor::executeRayQuery(Vector3 *result, const Vector3 &pos,
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| 23 | const Vector3 &dir)
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| 24 | {
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| 25 | return executeRayQuery(result, Ray(pos, dir));
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| 26 | }
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| 27 | //-----------------------------------------------------------------------
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| 28 | bool RayQueryExecutor::executeRayQuery(Vector3 *result, const Ray &ray)
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| 29 | {
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| 30 | mRaySceneQuery->setRay(ray);
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| 31 |
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| 32 | // Perform the scene query
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| 33 | RaySceneQueryResult &queryResult = mRaySceneQuery->execute();
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| 34 | RaySceneQueryResult::iterator it = queryResult.begin();
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| 35 |
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| 36 | if (it != queryResult.end() && it->worldFragment)
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| 37 | {
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| 38 | SceneQuery::WorldFragment* wf = it->worldFragment;
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| 39 |
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| 40 | *result = wf->singleIntersection;
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| 41 | return true;
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| 42 | }
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| 43 |
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| 44 | return false;
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| 45 | }
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| 46 |
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| 47 | /*******************************************************/
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| 48 | /* TerrainContentGenerator implementation */
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| 49 | /*******************************************************/
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| 50 |
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| 51 | //-----------------------------------------------------------------------
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| 52 | TerrainContentGenerator::TerrainContentGenerator(SceneManager *sm):
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[110] | 53 | SceneContentGenerator(sm), mOffset(0)
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[107] | 54 | {
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| 55 | mMinPos = Vector3(0.0f, MAX_HEIGHT, 0.0f);
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| 56 | mMaxPos = Vector3(3000.0f, MAX_HEIGHT, 3000.0f);
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| 57 |
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| 58 | mMinAngle = Vector3(0.0f, 0.0f, 0.0f);
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| 59 | mMaxAngle = Vector3(360.0f, 0.0f, 0.0f);
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| 60 |
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| 61 | mRayQueryExecutor = new RayQueryExecutor(sm);
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| 62 | }
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| 63 | //-----------------------------------------------------------------------
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| 64 | TerrainContentGenerator::~TerrainContentGenerator()
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| 65 | {
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| 66 | delete mRayQueryExecutor;
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| 67 | }
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| 68 | //-----------------------------------------------------------------------
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| 69 | SceneNode *TerrainContentGenerator::GenerateSceneObject(const Vector3 &position, |
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| 70 | const Vector3 &rotation, const String& objName)
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| 71 | {
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| 72 | Vector3 queryResult;
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| 73 | // set y to max height so we are sure to be over terrain
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| 74 | Vector3 pos(position.x, MAX_HEIGHT, position.z);
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| 75 |
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| 76 | if (mRayQueryExecutor->executeRayQuery(&queryResult, position, Vector3::NEGATIVE_UNIT_Y))
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| 77 | {
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| 78 | // reject if height is too high
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| 79 | if (queryResult.y < mMaxPos.y)
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| 80 | {
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[111] | 81 | // add offset so object is over terrain
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| 82 | queryResult.y += mOffset;
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| 83 |
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[107] | 84 | return SceneContentGenerator::GenerateSceneObject(queryResult, rotation, objName);
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | return NULL;
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| 89 | }
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| 90 | //-----------------------------------------------------------------------
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| 91 | RayQueryExecutor *TerrainContentGenerator::GetRayQueryExecutor()
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| 92 | {
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| 93 | return mRayQueryExecutor;
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| 94 | }
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| 95 | //-----------------------------------------------------------------------
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[110] | 96 | void TerrainContentGenerator::SetOffset(Real offset)
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[107] | 97 | {
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[110] | 98 | mOffset = offset;
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| 99 | }
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[107] | 100 |
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| 101 | } // namespace Ogre |
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