[1163] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of the GameTools Project
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| 4 | http://www.gametools.org
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| 5 |
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| 6 | Author: Martin Szydlowski
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| 7 | -----------------------------------------------------------------------------
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| 8 | */
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| 9 |
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| 10 | #include "OgreKdTreeSceneNode.h"
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| 11 | #include "OgreKdTreeSceneManager.h"
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| 12 |
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| 13 | #include <OgreStringConverter.h>
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| 14 |
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| 15 | namespace Ogre
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| 16 | {
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| 17 | // TRIVIA: this function is _not_ called for nodes which did not change since the last frame
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| 18 | // only exception: the root node ... it's aabb should be null however, so we don't care
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| 19 | void KdTreeSceneNode::_updateBounds(void)
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| 20 | {
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| 21 | // Reset bounds first
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| 22 | mWorldAABB.setNull();
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| 23 |
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| 24 | // Update bounds from own attached objects
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| 25 | ObjectMap::iterator i;
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| 26 | for (i = mObjectsByName.begin(); i != mObjectsByName.end(); ++i)
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| 27 | {
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| 28 | // Merge world bounds of each object
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| 29 | mWorldAABB.merge(i->second->getWorldBoundingBox(true));
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| 30 | }
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| 31 |
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| 32 | if (!mWorldAABB.isNull())
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| 33 | {
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| 34 | static_cast<KdTreeSceneManager *>(mCreator)->_updateNode(this);
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| 35 | }
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| 36 | }
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| 37 |
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| 38 | void KdTreeSceneNode::forceComputeAABB(AxisAlignedBox& aabb) // OBSOLETE !!
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| 39 | {
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| 40 |
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| 41 | // Update bounds from own attached objects
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| 42 | ObjectMap::iterator i;
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| 43 | for (i = mObjectsByName.begin(); i != mObjectsByName.end(); ++i)
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| 44 | {
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| 45 | // Merge world bounds of each object
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| 46 | aabb.merge(i->second->getWorldBoundingBox(true));
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| 47 | }
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| 48 | // Merge with children
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| 49 | ChildNodeMap::iterator child;
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| 50 | for (child = mChildren.begin(); child != mChildren.end(); ++child)
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| 51 | {
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| 52 | KdTreeSceneNode* sceneChild = static_cast<KdTreeSceneNode*>(child->second);
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| 53 | sceneChild->forceComputeAABB(aabb);
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| 54 | }
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| 55 | }
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| 56 |
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| 57 | void KdTreeSceneNode::computeScene(PlaneEventList& events, AxisAlignedBox& aabb, int& nObjects, bool includeChildren)
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| 58 | {
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| 59 | // first compute nodes AABB
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| 60 | mWorldAABB.setNull();
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| 61 | // Update bounds from own attached objects
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| 62 | ObjectMap::iterator i;
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| 63 | for (i = mObjectsByName.begin(); i != mObjectsByName.end(); ++i)
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| 64 | {
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| 65 | // Merge world bounds of each object
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| 66 | mWorldAABB.merge(i->second->getWorldBoundingBox(true));
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| 67 | }
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| 68 |
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| 69 | if (!mWorldAABB.isNull())
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| 70 | {
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| 71 | // merge aabb with global AABB
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| 72 | aabb.merge(mWorldAABB);
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| 73 | // increase object count
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| 74 | nObjects++;
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| 75 |
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| 76 | // generate events
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| 77 | PlaneEvent::Dimension axes[] =
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| 78 | {PlaneEvent::PED_X, PlaneEvent::PED_Y, PlaneEvent::PED_Z};
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| 79 | Vector3 min = mWorldAABB.getMinimum();
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| 80 | Vector3 max = mWorldAABB.getMaximum();
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| 81 | //PlaneEvent * e;
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| 82 | for (int i = 0; i < 3; i++)
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| 83 | {
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| 84 | // 1-D and 2-D objects
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| 85 | if (min[i] == max[i])
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| 86 | {
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| 87 | //e = new PlaneEvent(this, min, axes[i], PlaneEvent::PET_ON);
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| 88 | //sceneinfo.events.push_back(*e);
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| 89 | events.push_back(PlaneEvent(this, min, axes[i], PlaneEvent::PET_ON));
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| 90 | }
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| 91 | else
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| 92 | {
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| 93 | //e = new PlaneEvent(this, min, axes[i], PlaneEvent::PET_START);
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| 94 | //sceneinfo.events.push_back(*e);
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| 95 | //e = new PlaneEvent(this, max, axes[i], PlaneEvent::PET_END);
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| 96 | //sceneinfo.events.push_back(*e);
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| 97 | events.push_back(PlaneEvent(this, min, axes[i], PlaneEvent::PET_START));
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| 98 | events.push_back(PlaneEvent(this, max, axes[i], PlaneEvent::PET_END));
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| 99 | }
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| 100 | }
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| 101 | }
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| 102 |
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| 103 | // Merge with children
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| 104 | if (includeChildren)
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| 105 | {
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| 106 | ChildNodeMap::iterator child;
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| 107 | for (child = mChildren.begin(); child != mChildren.end(); ++child)
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| 108 | {
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| 109 | KdTreeSceneNode* sceneChild = static_cast<KdTreeSceneNode*>(child->second);
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| 110 | sceneChild->computeScene(events, aabb, nObjects);
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| 111 | }
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| 112 | }
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| 113 | }
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| 114 |
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| 115 | //void KdTreeSceneNode::_findVisibleObjects(Camera* cam, RenderQueue* queue,
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| 116 | // bool includeChildren, bool displayNodes, bool onlyShadowCasters)
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| 117 | void KdTreeSceneNode::queueObjects(Camera* cam, RenderQueue* queue, bool onlyShadowCasters)
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| 118 | {
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| 119 | //SceneNode::_findVisibleObjects(cam, queue, includeChildren, displayNodes, onlyShadowCasters);
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| 120 |
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| 121 | // Add all entities
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| 122 | ObjectMap::iterator iobj;
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| 123 | ObjectMap::iterator iobjend = mObjectsByName.end();
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| 124 | for (iobj = mObjectsByName.begin(); iobj != iobjend; ++iobj)
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| 125 | {
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| 126 | // Tell attached objects about camera position (incase any extra processing they want to do)
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| 127 | iobj->second->_notifyCurrentCamera(cam);
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| 128 | if (!onlyShadowCasters || iobj->second->getCastShadows())
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| 129 | {
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| 130 | iobj->second->_updateRenderQueue(queue);
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| 131 | }
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| 132 | }
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| 133 |
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| 134 | // Check if the bounding box should be shown.
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| 135 | // See if our flag is set or if the scene manager flag is set.
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| 136 | if (mShowBoundingBox || (mCreator && mCreator->getShowBoundingBoxes()))
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| 137 | {
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| 138 | _addBoundingBoxToQueue(queue);
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| 139 | }
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| 140 | }
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| 141 |
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| 142 | AxisAlignedBox KdTreeSceneNode::getBoundingBox() const
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| 143 | {
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| 144 | return mWorldAABB;
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| 145 | }
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| 146 |
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| 147 | // DEBUG
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| 148 | String KdTreeSceneNode::dumpToString()
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| 149 | {
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| 150 | String objects;
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| 151 | // Add all entities
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| 152 | ObjectMap::iterator iobj = mObjectsByName.begin();
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| 153 | ObjectMap::iterator iobjend = mObjectsByName.end();
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| 154 | while (iobj != iobjend)
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| 155 | {
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| 156 | objects += " " + iobj->second->getName();
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| 157 | iobj++;
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| 158 | }
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| 159 | objects += " Attached to " + StringConverter::toString(mLeaves.size()) + " KdLeaves.";
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| 160 | return objects;
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| 161 | }
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| 162 | } |
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