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103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
#include "cellborder.hpp"
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#include <osg/Material>
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#include <osg/PolygonMode>
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#include <osg/Geometry>
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#include <osg/Geode>
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#include "world.hpp"
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#include "../esm/loadland.hpp"
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namespace Terrain
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{
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CellBorder::CellBorder(Terrain::World *world, osg::Group *root, int borderMask):
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mWorld(world),
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mRoot(root),
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mBorderMask(borderMask)
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{
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}
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void CellBorder::createCellBorderGeometry(int x, int y)
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{
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const int cellSize = ESM::Land::REAL_SIZE;
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const int borderSegments = 40;
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const float offset = 10.0;
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osg::Vec3 cellCorner = osg::Vec3(x * cellSize,y * cellSize,0);
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osg::ref_ptr<osg::Vec3Array> vertices = new osg::Vec3Array;
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osg::ref_ptr<osg::Vec4Array> colors = new osg::Vec4Array;
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osg::ref_ptr<osg::Vec3Array> normals = new osg::Vec3Array;
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normals->push_back(osg::Vec3(0.0f,-1.0f, 0.0f));
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float borderStep = cellSize / ((float) borderSegments);
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for (int i = 0; i <= 2 * borderSegments; ++i)
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{
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osg::Vec3f pos = i < borderSegments ?
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osg::Vec3(i * borderStep,0.0f,0.0f) :
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osg::Vec3(cellSize,(i - borderSegments) * borderStep,0.0f);
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pos += cellCorner;
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pos += osg::Vec3f(0,0,mWorld->getHeightAt(pos) + offset);
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vertices->push_back(pos);
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osg::Vec4f col = i % 2 == 0 ?
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osg::Vec4f(0,0,0,1) :
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osg::Vec4f(1,1,0,1);
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colors->push_back(col);
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}
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osg::ref_ptr<osg::Geometry> border = new osg::Geometry;
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border->setVertexArray(vertices.get());
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border->setNormalArray(normals.get());
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border->setNormalBinding(osg::Geometry::BIND_OVERALL);
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border->setColorArray(colors.get());
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border->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
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border->addPrimitiveSet(new osg::DrawArrays(GL_LINE_STRIP,0,vertices->size()));
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osg::ref_ptr<osg::Geode> borderGeode = new osg::Geode;
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borderGeode->addDrawable(border.get());
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osg::StateSet *stateSet = borderGeode->getOrCreateStateSet();
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osg::ref_ptr<osg::Material> material (new osg::Material);
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material->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
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stateSet->setAttribute(material);
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osg::PolygonMode* polygonmode = new osg::PolygonMode;
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polygonmode->setMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE);
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stateSet->setAttributeAndModes(polygonmode,osg::StateAttribute::ON);
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borderGeode->setNodeMask(mBorderMask);
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mRoot->addChild(borderGeode);
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mCellBorderNodes[std::make_pair(x,y)] = borderGeode;
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}
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void CellBorder::destroyCellBorderGeometry(int x, int y)
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{
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CellGrid::iterator it = mCellBorderNodes.find(std::make_pair(x,y));
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if (it == mCellBorderNodes.end())
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return;
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osg::ref_ptr<osg::Node> borderNode = it->second;
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mRoot->removeChild(borderNode);
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mCellBorderNodes.erase(it);
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}
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void CellBorder::destroyCellBorderGeometry()
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{
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for (const auto& v : mCellBorderNodes)
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mRoot->removeChild(v.second);
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mCellBorderNodes.clear();
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}
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}
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