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f415f4081a
- changed the way we calculate whether or not to render a parent "average" voxel so that if any of it's most distant child would not be visible, then it's used instead of it's children - added precalculated value for topFarLeft corner of AABox (optimization) - changed VoxelSystem::newTreeToArrays() and VoxelTree::encodeTreeBitstreamRecursion() to use the same help function for determining this LOD boundary behavior - deleted old dead code in voxel-server and VoxelTree for picking which node to start sending with, since it wasn't being used - added VoxelNode::furthestDistanceToCamera() which tells you not the distance to the center of the voxel, but the distance from the camera to the furthest corner relative to the camera. - added ViewFrustum::getFurthestPointFromCamera() which given an axis-aligned box will tell you which vertex of the box is furthest from the camera
122 lines
4.9 KiB
C++
122 lines
4.9 KiB
C++
//
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// VoxelNode.h
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// hifi
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//
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// Created by Stephen Birarda on 3/13/13.
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//
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//
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#ifndef __hifi__VoxelNode__
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#define __hifi__VoxelNode__
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#include <SharedUtil.h>
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#include "AABox.h"
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#include "ViewFrustum.h"
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#include "VoxelConstants.h"
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class VoxelTree; // forward delclaration
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typedef unsigned char colorPart;
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typedef unsigned char nodeColor[4];
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typedef unsigned char rgbColor[3];
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class VoxelNode {
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private:
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nodeColor _trueColor;
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#ifndef NO_FALSE_COLOR // !NO_FALSE_COLOR means, does have false color
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nodeColor _currentColor;
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bool _falseColored;
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#endif
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glBufferIndex _glBufferIndex;
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bool _isDirty;
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uint64_t _lastChanged;
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bool _shouldRender;
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bool _isStagedForDeletion;
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AABox _box;
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unsigned char* _octalCode;
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VoxelNode* _children[8];
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int _childCount;
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float _density; // If leaf: density = 1, if internal node: 0-1 density of voxels inside
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void calculateAABox();
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void init(unsigned char * octalCode);
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public:
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VoxelNode(); // root node constructor
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VoxelNode(unsigned char * octalCode); // regular constructor
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~VoxelNode();
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unsigned char* getOctalCode() const { return _octalCode; };
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VoxelNode* getChildAtIndex(int childIndex) const { return _children[childIndex]; };
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void deleteChildAtIndex(int childIndex);
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VoxelNode* removeChildAtIndex(int childIndex);
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VoxelNode* addChildAtIndex(int childIndex);
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void safeDeepDeleteChildAtIndex(int childIndex, bool& stagedForDeletion); // handles staging or deletion of all descendents
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void setColorFromAverageOfChildren();
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void setRandomColor(int minimumBrightness);
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bool collapseIdenticalLeaves();
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const AABox& getAABox() const { return _box; };
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const glm::vec3& getCenter() const { return _box.getCenter(); };
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const glm::vec3& getCorner() const { return _box.getCorner(); };
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float getScale() const { return _box.getSize().x; /* voxelScale = (1 / powf(2, *node->getOctalCode())); */ };
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int getLevel() const { return *_octalCode + 1; /* one based or zero based? this doesn't correctly handle 2 byte case */ };
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float getEnclosingRadius() const;
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bool isColored() const { return (_trueColor[3]==1); };
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bool isInView(const ViewFrustum& viewFrustum) const;
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ViewFrustum::location inFrustum(const ViewFrustum& viewFrustum) const;
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float distanceToCamera(const ViewFrustum& viewFrustum) const;
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float furthestDistanceToCamera(const ViewFrustum& viewFrustum) const;
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bool calculateShouldRender(const ViewFrustum* viewFrustum, int boundaryLevelAdjust = 0) const;
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// points are assumed to be in Voxel Coordinates (not TREE_SCALE'd)
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float distanceSquareToPoint(const glm::vec3& point) const; // when you don't need the actual distance, use this.
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float distanceToPoint(const glm::vec3& point) const;
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bool isLeaf() const { return _childCount == 0; }
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int getChildCount() const { return _childCount; }
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void printDebugDetails(const char* label) const;
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bool isDirty() const { return _isDirty; };
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void clearDirtyBit() { _isDirty = false; };
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bool hasChangedSince(uint64_t time) const { return (_lastChanged > time); };
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void markWithChangedTime() { _lastChanged = usecTimestampNow(); };
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void handleSubtreeChanged(VoxelTree* myTree);
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glBufferIndex getBufferIndex() const { return _glBufferIndex; };
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bool isKnownBufferIndex() const { return (_glBufferIndex != GLBUFFER_INDEX_UNKNOWN); };
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void setBufferIndex(glBufferIndex index) { _glBufferIndex = index; };
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// Used by VoxelSystem for rendering in/out of view and LOD
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void setShouldRender(bool shouldRender);
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bool getShouldRender() const { return _shouldRender; }
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// Used by VoxelSystem to mark a node as to be deleted on next render pass
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void stageForDeletion() { _isStagedForDeletion = true; _isDirty = true; };
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bool isStagedForDeletion() const { return _isStagedForDeletion; }
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#ifndef NO_FALSE_COLOR // !NO_FALSE_COLOR means, does have false color
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void setFalseColor(colorPart red, colorPart green, colorPart blue);
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void setFalseColored(bool isFalseColored);
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bool getFalseColored() { return _falseColored; };
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void setColor(const nodeColor& color);
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const nodeColor& getTrueColor() const { return _trueColor; };
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const nodeColor& getColor() const { return _currentColor; };
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void setDensity(float density) { _density = density; };
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float getDensity() const { return _density; };
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#else
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void setFalseColor(colorPart red, colorPart green, colorPart blue) { /* no op */ };
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void setFalseColored(bool isFalseColored) { /* no op */ };
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bool getFalseColored() { return false; };
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void setColor(const nodeColor& color) { memcpy(_trueColor,color,sizeof(nodeColor)); };
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void setDensity(const float density) { _density = density; };
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const nodeColor& getTrueColor() const { return _trueColor; };
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const nodeColor& getColor() const { return _trueColor; };
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#endif
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};
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#endif /* defined(__hifi__VoxelNode__) */
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