[2766] | 1 | #include "SceneEntity.h"
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| 2 | #include "Geometry.h"
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| 3 | #include "Material.h"
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[2769] | 4 | #include "RenderState.h"
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[2840] | 5 | #include "Shape.h"
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[2844] | 6 | #include "Transform3.h"
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| 7 | #include "Camera.h"
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[3110] | 8 | #include "glInterface.h"
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[2844] | 9 |
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[2766] | 10 |
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[2842] | 11 | using namespace std;
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| 12 |
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| 13 |
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[2776] | 14 | namespace CHCDemoEngine
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[2766] | 15 | {
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| 16 |
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[3109] | 17 | int SceneEntity::sCurrentId = 0;
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[2865] | 18 | bool SceneEntity::sUseLODs = true;
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[2842] | 19 |
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[2865] | 20 |
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[2844] | 21 | SceneEntity::SceneEntity(Transform3 *trafo):
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[3109] | 22 | mTransform(trafo), mCurrentLODLevel(0), mLODLastUpdated(-1), mId(sCurrentId ++)
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[2766] | 23 | {
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[2844] | 24 | mBox.Initialize();
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[2766] | 25 | }
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| 26 |
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| 27 |
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[2792] | 28 | SceneEntity::~SceneEntity()
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| 29 | {
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| 30 | }
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| 31 |
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| 32 |
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[2847] | 33 | void SceneEntity::UpdateLODs(const Vector3 &viewPoint)
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[2766] | 34 | {
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[2865] | 35 | mCurrentLODLevel = 0;
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| 36 |
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| 37 | if (!sUseLODs) return;
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| 38 |
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[3070] | 39 | const Vector3 pos = GetWorldCenter();
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[2853] | 40 | const float dist = SqrDistance(pos, viewPoint);
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[2841] | 41 |
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[2853] | 42 | // note: we assume that lods are ordered from smallest distance to largest
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[2847] | 43 | const int l = (int)mLODLevels.size();
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[2839] | 44 |
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[2844] | 45 | for (int i = 0; i < l; ++ i)
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[2766] | 46 | {
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[3102] | 47 | if (mLODLevels[i].GetSquaredDistance() > dist) break;
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[2844] | 48 | mCurrentLODLevel = i;
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[2839] | 49 | }
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[2848] | 50 | }
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[2766] | 51 |
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[2848] | 52 |
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| 53 | int SceneEntity::GetCurrentLODLevel()
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| 54 | {
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| 55 | if (mLODLastUpdated != LODLevel::sFrameId)
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[2841] | 56 | {
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[2848] | 57 | mLODLastUpdated = LODLevel::sFrameId;
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| 58 | UpdateLODs(LODLevel::sViewPoint);
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| 59 | }
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| 60 |
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| 61 | return mCurrentLODLevel;
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[2839] | 62 | }
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[2825] | 63 |
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[2848] | 64 |
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[2844] | 65 | void SceneEntity::GetCurrentLODLevel(ShapeContainer::iterator &start,
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| 66 | ShapeContainer::iterator &end)
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| 67 | {
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[2847] | 68 | if (mLODLastUpdated != LODLevel::sFrameId)
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| 69 | {
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| 70 | mLODLastUpdated = LODLevel::sFrameId;
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| 71 | UpdateLODs(LODLevel::sViewPoint);
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| 72 | }
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| 73 |
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[3070] | 74 | start = mLODLevels[mCurrentLODLevel].GetShapes().begin();
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| 75 | end = mLODLevels[mCurrentLODLevel].GetShapes().end();
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[2844] | 76 | }
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[2825] | 77 |
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[2844] | 78 |
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[3034] | 79 | void SceneEntity::GetLODLevel(int level,
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[2844] | 80 | ShapeContainer::iterator &start,
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| 81 | ShapeContainer::iterator &end)
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[2839] | 82 | {
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[3070] | 83 | start = mLODLevels[level].GetShapes().begin();
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| 84 | end = mLODLevels[level].GetShapes().end();
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[2844] | 85 | }
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[2839] | 86 |
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| 87 |
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[2844] | 88 | void SceneEntity::Render(RenderState *state)
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| 89 | {
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| 90 | ShapeContainer::iterator sit, sit_end;
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[2841] | 91 |
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[3070] | 92 | if (!mLODLevels.empty())
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| 93 | GetCurrentLODLevel(sit, sit_end);
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| 94 | else
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| 95 | {
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| 96 | sit = mShapes.begin(); sit_end = mShapes.end();
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| 97 | }
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[2844] | 98 |
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[3110] | 99 | Prepare(state);
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[3071] | 100 |
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[2844] | 101 | for (; sit != sit_end; ++ sit)
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[3114] | 102 | (*sit)->Render(state, this);
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[3071] | 103 |
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| 104 | mTransform->Unload(state);
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[2766] | 105 | }
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| 106 |
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| 107 |
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[2839] | 108 | void SceneEntity::AddShape(Shape *shape)
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[2766] | 109 | {
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[2839] | 110 | mShapes.push_back(shape);
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[2844] | 111 | mBox.Include(shape->GetBoundingBox());
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[2847] | 112 |
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| 113 | mCenter = mBox.Center();
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[2766] | 114 | }
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| 115 |
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| 116 |
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[2840] | 117 | void SceneEntity::SetTransform(Transform3 *trafo)
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[2766] | 118 | {
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| 119 | mTransform = trafo;
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| 120 | }
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| 121 |
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| 122 |
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| 123 | void SceneEntity::SetLastRendered(int lastRendered)
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| 124 | {
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| 125 | mLastRendered = lastRendered;
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| 126 | }
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| 127 |
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| 128 |
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| 129 | int SceneEntity::GetLastRendered() const
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| 130 | {
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| 131 | return mLastRendered;
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| 132 | }
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| 133 |
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| 134 |
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[2844] | 135 | int SceneEntity::CountNumTriangles(int lodLevel)
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[2766] | 136 | {
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[2842] | 137 | int numTriangles = 0;
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[2844] | 138 |
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| 139 | ShapeContainer::iterator sit, sit_end;
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[2766] | 140 |
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[2844] | 141 | if (lodLevel == -1)
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[2848] | 142 | lodLevel = GetCurrentLODLevel();
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[2842] | 143 |
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[3070] | 144 | return mLODLevels[lodLevel].GetNumTriangles();
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[2766] | 145 | }
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| 146 |
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| 147 |
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[3070] | 148 | AxisAlignedBox3 SceneEntity::GetWorldBoundingBox() const
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[2844] | 149 | {
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[2961] | 150 | if (mTransform->IsIdentity()) return mBox;
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[2957] | 151 | Matrix4x4 mat = mTransform->GetMatrix();
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| 152 |
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| 153 | return Transform(mBox, mat);
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[2844] | 154 | }
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| 155 |
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| 156 |
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| 157 | AxisAlignedBox3 SceneEntity::GetBoundingBox() const
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| 158 | {
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| 159 | return mBox;
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| 160 | }
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| 161 |
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[2847] | 162 |
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[3070] | 163 | Vector3 SceneEntity::GetWorldCenter() const
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[2847] | 164 | {
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[3110] | 165 | if (mTransform->IsIdentity()) return mCenter;
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[3120] | 166 | return mTransform->GetMatrix() * mCenter;
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[2847] | 167 | }
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| 168 |
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| 169 |
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[3110] | 170 | void SceneEntity::Prepare(RenderState *state)
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| 171 | {
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[3113] | 172 | /*int id[] = {(mId / (255 * 255)) % 255, (mId / 255) % 255, mId % 255, 0};
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[3110] | 173 |
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| 174 | GLfloat fogColor[4] = {(float)id[0] / 255.0f, (float)id[1] / 255.0f, (float)id[2] / 255.0f, .0f};
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[3113] | 175 | glFogfv(GL_FOG_COLOR, fogColor);*/
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[3110] | 176 |
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| 177 | mTransform->Load(state);
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[3101] | 178 | }
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[3110] | 179 |
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| 180 |
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| 181 | } |
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