Merge remote-tracking branch 'aesylwinn/RenderPathgrid'
Marc Zinnschlag
9 years ago
commit
b4e341e1e2
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#include "pathgridutil.hpp"
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#include <osg/Geometry>
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#include <components/esm/loadland.hpp>
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#include <components/esm/loadpgrd.hpp>
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namespace SceneUtil
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{
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const unsigned short DiamondVertexCount = 6;
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const unsigned short DiamondIndexCount = 24;
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const unsigned short DiamondConnectorVertexCount = 4;
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const unsigned short DiamondTotalVertexCount = DiamondVertexCount + DiamondConnectorVertexCount;
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const float DiamondHalfHeight = 40.f;
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const float DiamondHalfWidth = 16.f;
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const osg::Vec3f DiamondPoints[DiamondVertexCount] =
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{
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osg::Vec3f( 0.f, 0.f, DiamondHalfHeight * 2.f),
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osg::Vec3f(-DiamondHalfWidth, -DiamondHalfWidth, DiamondHalfHeight),
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osg::Vec3f(-DiamondHalfWidth, DiamondHalfWidth, DiamondHalfHeight),
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osg::Vec3f( DiamondHalfWidth, -DiamondHalfWidth, DiamondHalfHeight),
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osg::Vec3f( DiamondHalfWidth, DiamondHalfWidth, DiamondHalfHeight),
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osg::Vec3f( 0.f, 0.f, 0.f)
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};
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const unsigned short DiamondIndices[DiamondIndexCount] =
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{
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0, 2, 1,
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0, 1, 3,
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0, 3, 4,
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0, 4, 2,
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5, 1, 2,
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5, 3, 1,
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5, 4, 3,
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5, 2, 4
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};
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const unsigned short DiamondConnectorVertices[DiamondConnectorVertexCount] =
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{
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1, 2, 3, 4
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};
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const osg::Vec4f DiamondColors[DiamondVertexCount] =
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{
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osg::Vec4f(0.f, 0.f, 1.f, 1.f),
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osg::Vec4f(0.f, .05f, .95f, 1.f),
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osg::Vec4f(0.f, .1f, .95f, 1.f),
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osg::Vec4f(0.f, .15f, .95f, 1.f),
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osg::Vec4f(0.f, .2f, .95f, 1.f),
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osg::Vec4f(0.f, .25f, 9.f, 1.f)
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};
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const osg::Vec4f DiamondEdgeColor = osg::Vec4f(0.5f, 1.f, 1.f, 1.f);
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osg::ref_ptr<osg::Geometry> createPathgridGeometry(const ESM::Pathgrid& pathgrid)
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{
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const unsigned short PointCount = static_cast<unsigned short>(pathgrid.mPoints.size());
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const size_t EdgeCount = pathgrid.mEdges.size();
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const unsigned short VertexCount = PointCount * DiamondTotalVertexCount;
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const unsigned short ColorCount = VertexCount;
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const size_t PointIndexCount = PointCount * DiamondIndexCount;
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const size_t EdgeIndexCount = EdgeCount * 2;
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osg::ref_ptr<osg::Geometry> gridGeometry = new osg::Geometry();
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osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array(VertexCount);
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osg::ref_ptr<osg::Vec4Array> colors = new osg::Vec4Array(ColorCount);
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osg::ref_ptr<osg::DrawElementsUShort> pointIndices =
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new osg::DrawElementsUShort(osg::PrimitiveSet::TRIANGLES, PointIndexCount);
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osg::ref_ptr<osg::DrawElementsUShort> lineIndices =
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new osg::DrawElementsUShort(osg::PrimitiveSet::LINES, EdgeIndexCount);
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// Add each point/node
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for (unsigned short pointIndex = 0; pointIndex < PointCount; ++pointIndex)
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{
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const ESM::Pathgrid::Point& point = pathgrid.mPoints[pointIndex];
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osg::Vec3f position = osg::Vec3f(point.mX, point.mY, point.mZ);
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unsigned short vertexOffset = pointIndex * DiamondTotalVertexCount;
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unsigned short indexOffset = pointIndex * DiamondIndexCount;
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// Point
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for (unsigned short i = 0; i < DiamondVertexCount; ++i)
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{
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(*vertices)[vertexOffset + i] = position + DiamondPoints[i];
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(*colors)[vertexOffset + i] = DiamondColors[i];
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}
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for (unsigned short i = 0; i < DiamondIndexCount; ++i)
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{
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pointIndices->setElement(indexOffset + i, vertexOffset + DiamondIndices[i]);
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}
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// Connectors
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vertexOffset += DiamondVertexCount;
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for (unsigned short i = 0; i < DiamondConnectorVertexCount; ++i)
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{
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(*vertices)[vertexOffset + i] = position + DiamondPoints[DiamondConnectorVertices[i]];
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(*colors)[vertexOffset + i] = DiamondEdgeColor;
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}
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}
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// Add edges
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unsigned short lineIndex = 0;
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for (ESM::Pathgrid::EdgeList::const_iterator edge = pathgrid.mEdges.begin();
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edge != pathgrid.mEdges.end(); ++edge)
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{
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if (edge->mV0 == edge->mV1 || edge->mV0 < 0 || edge->mV0 >= PointCount ||
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edge->mV1 < 0 || edge->mV1 >= PointCount)
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continue;
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const ESM::Pathgrid::Point& from = pathgrid.mPoints[edge->mV0];
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const ESM::Pathgrid::Point& to = pathgrid.mPoints[edge->mV1];
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osg::Vec3f fromPos = osg::Vec3f(from.mX, from.mY, from.mZ);
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osg::Vec3f toPos = osg::Vec3f(to.mX, to.mY, to.mZ);
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osg::Vec3f dir = toPos - fromPos;
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dir.normalize();
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osg::Quat rot = osg::Quat(-osg::PI / 2, osg::Vec3(0, 0, 1));
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dir = rot * dir;
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unsigned short diamondIndex = 0;
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if (dir.isNaN())
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diamondIndex = 0;
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else if (dir.y() >= 0 && dir.x() > 0)
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diamondIndex = 3;
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else if (dir.x() <= 0 && dir.y() > 0)
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diamondIndex = 1;
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else if (dir.y() <= 0 && dir.x() < 0)
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diamondIndex = 0;
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else if (dir.x() >= 0 && dir.y() < 0)
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diamondIndex = 2;
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unsigned short fromIndex = static_cast<unsigned short>(edge->mV0);
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unsigned short toIndex = static_cast<unsigned short>(edge->mV1);
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lineIndices->setElement(lineIndex++, fromIndex * DiamondTotalVertexCount + DiamondVertexCount + diamondIndex);
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lineIndices->setElement(lineIndex++, toIndex * DiamondTotalVertexCount + DiamondVertexCount + diamondIndex);
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}
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lineIndices->resize(lineIndex);
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gridGeometry->setVertexArray(vertices);
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gridGeometry->setColorArray(colors, osg::Array::BIND_PER_VERTEX);
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gridGeometry->addPrimitiveSet(pointIndices);
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gridGeometry->addPrimitiveSet(lineIndices);
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gridGeometry->getOrCreateStateSet()->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
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return gridGeometry;
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}
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}
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@ -0,0 +1,17 @@
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#ifndef OPENMW_COMPONENTS_PATHGRIDUTIL_H
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#define OPENMW_COMPONENTS_PATHGRIDUTIL_H
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#include <osg/ref_ptr>
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#include <osg/Geometry>
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namespace ESM
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{
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class Pathgrid;
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}
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namespace SceneUtil
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{
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osg::ref_ptr<osg::Geometry> createPathgridGeometry(const ESM::Pathgrid& pathgrid);
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}
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#endif
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