[59] | 1 | #include "OgreStableHeaders.h"
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| 2 | #include "OgreSolidHalfBoundingBox.h"
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| 3 |
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| 4 | #include "OgreSimpleRenderable.h"
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| 5 | #include "OgreHardwareBufferManager.h"
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| 6 | #include "OgreCamera.h"
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| 7 | #include "OgreMaterialManager.h"
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| 8 |
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[103] | 9 |
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[59] | 10 | namespace Ogre {
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| 11 |
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| 12 | #define POSITION_BINDING 0
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| 13 | //-----------------------------------------------------------------------
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[85] | 14 | SolidHalfBoundingBox::SolidHalfBoundingBox()
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[59] | 15 | {
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[85] | 16 | SetOcclusionQueryMaterial();
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[59] | 17 |
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| 18 | mRenderOp.vertexData->vertexCount = 8;
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| 19 | mRenderOp.operationType = RenderOperation::OT_TRIANGLE_FAN;
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| 20 | }
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| 21 | //-----------------------------------------------------------------------
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[85] | 22 | void SolidHalfBoundingBox::SetupBoundingBoxVertices(const AxisAlignedBox& aab,
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| 23 | const bool isFirstHalf)
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| 24 | {
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[91] | 25 | const Vector3& min = aab.getMinimum();
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| 26 | const Vector3& max = aab.getMaximum();
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| 27 |
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[85] | 28 | // fill the vertex buffer: 12 lines with 2 endpoints each make up a box
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[59] | 29 | HardwareVertexBufferSharedPtr vbuf =
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| 30 | mRenderOp.vertexData->vertexBufferBinding->getBuffer(POSITION_BINDING);
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| 31 |
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[91] | 32 | float* pPos = static_cast<float*>(vbuf->lock(HardwareBuffer::HBL_DISCARD));
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[59] | 33 |
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| 34 | // 5+------+7 |
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| 35 | // /| /| |
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| 36 | // / | / | |
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| 37 | // / 1+---/--+3 |
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| 38 | // 2+------+6 / y z |
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| 39 | // | / | / | / |
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| 40 | // |/ |/ |/ |
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| 41 | // 0+------+4 *---x
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| 42 |
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[1146] | 43 |
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| 44 | if (isFirstHalf) // fan 1
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[59] | 45 | {
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[91] | 46 | *pPos++ = min.x; *pPos++ = max.y; *pPos++ = max.z; //011
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| 47 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = max.z; //001
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| 48 | *pPos++ = max.x; *pPos++ = min.y; *pPos++ = max.z; //101
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| 49 | *pPos++ = max.x; *pPos++ = max.y; *pPos++ = max.z; //111
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[59] | 50 |
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[91] | 51 | *pPos++ = max.x; *pPos++ = max.y; *pPos++ = min.z; //110
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| 52 | *pPos++ = min.x; *pPos++ = max.y; *pPos++ = min.z; //010
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| 53 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = min.z; //000
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| 54 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = max.z; //001
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[59] | 55 | }
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[1146] | 56 | else // fan 2
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[59] | 57 | {
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[91] | 58 | *pPos++ = max.x; *pPos++ = min.y; *pPos++ = min.z; //100
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| 59 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = min.z; //000
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| 60 | *pPos++ = min.x; *pPos++ = max.y; *pPos++ = min.z; //010
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| 61 | *pPos++ = max.x; *pPos++ = max.y; *pPos++ = min.z; //110
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[59] | 62 |
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[91] | 63 | *pPos++ = max.x; *pPos++ = max.y; *pPos++ = max.z; //111
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| 64 | *pPos++ = max.x; *pPos++ = min.y; *pPos++ = max.z; //101
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| 65 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = max.z; //001
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| 66 | *pPos++ = min.x; *pPos++ = min.y; *pPos++ = min.z; //000
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[59] | 67 | }
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| 68 |
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| 69 | vbuf->unlock();
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| 70 | }
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[85] | 71 | //-----------------------------------------------------------------------
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[91] | 72 | void SolidHalfBoundingBox::SetupBoundingBox(const AxisAlignedBox& aab,
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[85] | 73 | const bool isFirstHalf)
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[59] | 74 | {
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| 75 | // init the vertices to the aabb
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[91] | 76 | SetupBoundingBoxVertices(aab, isFirstHalf);
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[59] | 77 |
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[91] | 78 | Real sqLen = std::max(aab.getMaximum().squaredLength(),
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| 79 | aab.getMinimum().squaredLength());
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| 80 | mRadius = Math::Sqrt(sqLen);
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| 81 |
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[59] | 82 | // setup the bounding box of this SimpleRenderable
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[91] | 83 | setBoundingBox(aab);
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[59] | 84 | }
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[85] | 85 | //-----------------------------------------------------------------------
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| 86 | void SolidHalfBoundingBox::SetOcclusionQueryMaterial( void )
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[59] | 87 | {
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[117] | 88 | m_pMaterial = MaterialManager::getSingleton().getByName("Visibility/QueryMaterial");
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[59] | 89 |
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[100] | 90 | if (m_pMaterial.isNull())
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[59] | 91 | {
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| 92 | m_pMaterial = MaterialManager::getSingleton().
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[117] | 93 | create("Visibility/QueryMaterial", ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
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[59] | 94 | }
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| 95 |
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| 96 | m_pMaterial->setColourWriteEnabled(false);
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| 97 | m_pMaterial->setDepthWriteEnabled(false);
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| 98 | m_pMaterial->setLightingEnabled(false);
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| 99 |
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[117] | 100 | setMaterial("Visibility/QueryMaterial");
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[59] | 101 | }
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| 102 |
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| 103 | } // namespace Ogre
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| 104 |
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