108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
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// do some test relating to the VPBRasterRenderer
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#include <iostream>
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#include <config.h>
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#include <osgTerrain/TerrainTile>
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#include <osg/Texture2D>
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#include <osgDB/WriteFile>
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#include <osgDB/Registry>
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#include <simgear/scene/tgdb/CoastlineBin.hxx>
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#include <simgear/scene/tgdb/VPBRasterRenderer.hxx>
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#include "testVPBRasterRender.hxx"
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using std::cout;
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using std::endl;
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using namespace simgear;
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void VPBRasterRenderTests::setUp()
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{
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CoastlineBinList coastlineBinList;
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SGPath test_data = SGPath(SGPath::fromUtf8(FG_TEST_SUITE_DATA), "/scenery/2892939_Coastline.txt");
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CPPUNIT_ASSERT(test_data.exists());
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osg::ref_ptr<CoastlineBin> coastlineBinA = new CoastlineBin(test_data);
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coastlineBinList.push_back(coastlineBinA);
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_bucket = SGBucket(2892939);
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VPBRasterRenderer::addCoastlineList(_bucket, coastlineBinList);
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}
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// The VPBRasterRenderer unit test.
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void VPBRasterRenderTests::testRaster()
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{
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// Generate a raster that includes some coastline
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osg::ref_ptr<osgTerrain::TerrainTile> tile = new osgTerrain::TerrainTile();
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float frac = 1.0/32.0;
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//unsigned int x = (unsigned int) ((_bucket.get_corner(0).getLongitudeDeg() - _bucket.get_chunk_lon()) * 32.0);
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//unsigned int y = (unsigned int) ((_bucket.get_corner(0).getLatitudeDeg() - _bucket.get_chunk_lat()) * 32.0);
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unsigned int x = 28;
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unsigned int y = 4;
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SGVec3d center, bottom_left, top_right, bottom_right, top_left;
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float lat[] = { _bucket.get_chunk_lat() + y * frac, _bucket.get_chunk_lat() + y * frac + frac};
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float lon[] = { _bucket.get_chunk_lon() + x * frac, _bucket.get_chunk_lon() + x * frac + frac};
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SGGeodesy::SGGeodToCart(SGGeod::fromDeg(_bucket.get_chunk_lon() + x * frac + 0.5 * frac, _bucket.get_chunk_lat() + y * frac + 0.5 * frac), center);
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SGGeodesy::SGGeodToCart(SGGeod::fromDeg(lon[0], lat[0]), bottom_left);
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SGGeodesy::SGGeodToCart(SGGeod::fromDeg(lon[1], lat[0]), bottom_right);
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SGGeodesy::SGGeodToCart(SGGeod::fromDeg(lon[0], lat[1]), top_left);
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SGGeodesy::SGGeodToCart(SGGeod::fromDeg(lon[1], lat[1]), top_right);
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SGVec3d s = bottom_right - bottom_left;
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SGVec3d t = top_left - bottom_left;
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SGVec3d u = top_right - top_left;
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SGVec3d v = top_right - bottom_right;
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auto width = 0.5 * (length(s) + length(u));
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auto height = 0.5 * (length(t) + length(v));
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osgTerrain::TileID tileID = osgTerrain::TileID(6, x, y);
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osgTerrain::Locator* locator = new osgTerrain::Locator();
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locator->setCoordinateSystemType(osgTerrain::Locator::PROJECTED);
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// Do some matrix math.
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// We need (0,0,0) to map to bottom_left
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// (1,0,0) to map to bottom_right
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// (0,1,0) to map to top_left
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// (1,1,0) to map to top_right
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SGVec3d o = bottom_left;
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osg::Matrixd matrix = osg::Matrixd(s.x(), s.y(), s.z(), 0.0,
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t.x(), t.y(), t.z(), 0.0,
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0.0, 0.0, 1.0, 0.0,
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o.x(), o.y(), o.z(), 1.0);
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locator->setTransform(matrix);
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tile->setTileID(tileID);
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tile->setLocator(locator);
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osg::Texture2D* texture;
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VPBRasterRenderer* renderer = new VPBRasterRenderer(0, tile, toOsg(center), width, height);
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texture = renderer->generateCoastTexture();
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CPPUNIT_ASSERT(texture != renderer->getDefaultCoastlineTexture());
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// Uncomment these next lines to output the raster as a png file.
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// auto image = renderer->generateCoastImage();
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// osgDB::Registry* registry = osgDB::Registry::instance();
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// osgDB::Options* nopt = registry->getOptions();
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//osgDB::ReaderWriter::WriteResult res = registry->writeImage(*image, "/tmp/raster.png", nopt);
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// Generate a raster at a higher LOD. which should generate the default raster.
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tileID = osgTerrain::TileID(1, x, y);
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tile->setTileID(tileID);
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renderer = new VPBRasterRenderer(0, tile, toOsg(center), width, height);
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texture = renderer->generateCoastTexture();
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CPPUNIT_ASSERT(texture == renderer->getDefaultCoastlineTexture());
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// Generate a raster where we know there is no coastline, which should generate the default raster
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tileID = osgTerrain::TileID(1, 0, 0);
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tile->setTileID(tileID);
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renderer = new VPBRasterRenderer(0, tile, toOsg(center), width, height);
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texture = renderer->generateCoastTexture();
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CPPUNIT_ASSERT(texture == renderer->getDefaultCoastlineTexture());
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}
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