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https://github.com/OpenSpace/OpenSpace.git
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269 lines
11 KiB
C++
269 lines
11 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/globebrowsing/rendering/patchrenderer.h>
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#include <modules/globebrowsing/meshes/clipmapgrid.h>
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// open space includes
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#include <openspace/engine/wrapper/windowwrapper.h>
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#include <openspace/engine/openspaceengine.h>
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#include <openspace/rendering/renderengine.h>
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// ghoul includes
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#include <ghoul/misc/assert.h>
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#include <ghoul/opengl/texture.h>
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#include <ghoul/opengl/textureunit.h>
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#define _USE_MATH_DEFINES
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#include <math.h>
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namespace {
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const std::string _loggerCat = "PatchRenderer";
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const std::string keyFrame = "Frame";
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const std::string keyGeometry = "Geometry";
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const std::string keyShading = "PerformShading";
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const std::string keyBody = "Body";
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}
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namespace openspace {
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//////////////////////////////////////////////////////////////////////////////////////
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// PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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PatchRenderer::PatchRenderer()
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: _tileSet(Geodetic2(M_PI, M_PI * 2), Geodetic2(M_PI / 2, -M_PI), 0)
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{
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}
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PatchRenderer::~PatchRenderer() {
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if (_programObject) {
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RenderEngine& renderEngine = OsEng.renderEngine();
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renderEngine.removeRenderProgram(_programObject);
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_programObject = nullptr;
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// LATLON PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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LatLonPatchRenderer::LatLonPatchRenderer(shared_ptr<Grid> grid)
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: PatchRenderer()
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, _grid(grid)
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, tileProvider("map_service_configs/TERRAIN.wms" , 5000)
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//, tileProvider("map_service_configs/frmt_wms_virtualearth.xml", 5000)
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//, tileProvider("textures/earth_bluemarble.jpg", 5000)
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{
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_programObject = OsEng.renderEngine().buildRenderProgram(
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"LatLonSphereMappingProgram",
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"${MODULE_GLOBEBROWSING}/shaders/latlonpatch_spheremapping_vs.glsl",
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"${MODULE_GLOBEBROWSING}/shaders/simple_fs.glsl");
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ghoul_assert(_programObject != nullptr, "Failed to initialize programObject!");
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using IgnoreError = ghoul::opengl::ProgramObject::IgnoreError;
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_programObject->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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}
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void LatLonPatchRenderer::update() {
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tileProvider.prerender();
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}
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void LatLonPatchRenderer::renderPatch(
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const GeodeticPatch& patch, const RenderData& data, const Ellipsoid& ellipsoid)
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{
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// Get the textures that should be used for rendering
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GeodeticTileIndex ti = _tileSet.getTileIndex(patch);
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renderPatch(patch, data, ellipsoid, ti);
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}
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void LatLonPatchRenderer::renderPatch(
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const GeodeticPatch& patch,
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const RenderData& data,
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const Ellipsoid& ellipsoid,
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const GeodeticTileIndex& tileIndex)
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{
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using namespace glm;
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// PATCH DID NOT MATCH THE TILEINDEX SO I CREATED A NEW PATCH FROM THE INDEX
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GeodeticPatch newPatch = patch;//GeodeticPatch(tileIndex);
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//GeodeticTileIndex tmpTileIndex = _tileSet.getTileIndex(patch);
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// TODO : Model transform should be fetched as a matrix directly.
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mat4 modelTransform = translate(mat4(1), data.position.vec3());
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mat4 viewTransform = data.camera.combinedViewMatrix();
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mat4 modelViewProjectionTransform = data.camera.projectionMatrix()
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* viewTransform * modelTransform;
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// activate shader
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_programObject->activate();
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// Get the textures that should be used for rendering
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std::shared_ptr<ghoul::opengl::Texture> tile00;
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bool usingTile = true;
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tile00 = tileProvider.getTile(tileIndex);
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if (tile00 == nullptr) {
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tile00 = _tileSet.getTile(tileIndex);
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usingTile = false;
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}
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glm::mat3 uvTransform = usingTile ? glm::mat3(1) : _tileSet.getUvTransformationPatchToTile(newPatch, tileIndex);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnit;
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texUnit.activate();
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tile00->bind();
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_programObject->setUniform("textureSampler", texUnit);
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_programObject->setUniform("uvTransformPatchToTile", uvTransform);
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Geodetic2 swCorner = newPatch.southWestCorner();
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_programObject->setUniform("segmentsPerPatch", _grid->xSegments());
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_programObject->setUniform("modelViewProjectionTransform", modelViewProjectionTransform);
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_programObject->setUniform("minLatLon", vec2(swCorner.toLonLatVec2()));
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_programObject->setUniform("lonLatScalingFactor", vec2(newPatch.size().toLonLatVec2()));
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_programObject->setUniform("radiiSquared", vec3(ellipsoid.radiiSquared()));
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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// render
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_grid->geometry().drawUsingActiveProgram();
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// disable shader
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_programObject->deactivate();
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}
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//////////////////////////////////////////////////////////////////////////////////////
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// CLIPMAP PATCH RENDERER //
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//////////////////////////////////////////////////////////////////////////////////////
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ClipMapPatchRenderer::ClipMapPatchRenderer(shared_ptr<ClipMapGrid> grid)
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: PatchRenderer()
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, _grid(grid)
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{
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_programObject = OsEng.renderEngine().buildRenderProgram(
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"LatLonSphereMappingProgram",
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"${MODULE_GLOBEBROWSING}/shaders/clipmappatch_spheremapping_vs.glsl",
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"${MODULE_GLOBEBROWSING}/shaders/simple_fs.glsl");
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ghoul_assert(_programObject != nullptr, "Failed to initialize programObject!");
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using IgnoreError = ghoul::opengl::ProgramObject::IgnoreError;
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_programObject->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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}
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void ClipMapPatchRenderer::update() {
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}
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void ClipMapPatchRenderer::renderPatch(
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const Geodetic2& patchSize,
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const RenderData& data,
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const Ellipsoid& ellipsoid)
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{
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// activate shader
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_programObject->activate();
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using namespace glm;
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mat4 viewTransform = data.camera.combinedViewMatrix();
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// TODO : Model transform should be fetched as a matrix directly.
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mat4 modelTransform = translate(mat4(1), data.position.vec3());
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// Snap patch position
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int segmentsPerPatch = _grid->segments();
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Geodetic2 stepSize = Geodetic2(
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patchSize.lat / segmentsPerPatch,
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patchSize.lon / segmentsPerPatch);
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ivec2 patchesToCoverGlobe = ivec2(
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M_PI / patchSize.lat + 0.5,
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M_PI * 2 / patchSize.lon + 0.5);
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Geodetic2 cameraPosLatLon = ellipsoid.cartesianToGeodetic2(data.camera.position().dvec3());
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ivec2 intSnapCoord = ivec2(
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cameraPosLatLon.lat / (M_PI * 2) * segmentsPerPatch * patchesToCoverGlobe.y,
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cameraPosLatLon.lon / (M_PI) * segmentsPerPatch * patchesToCoverGlobe.x);
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Geodetic2 newPatchCenter = Geodetic2(
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stepSize.lat * intSnapCoord.x,
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stepSize.lon * intSnapCoord.y);
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GeodeticPatch newPatch(
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newPatchCenter,
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Geodetic2(patchSize.lat / 2, patchSize.lon / 2));
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ivec2 contraction = ivec2(intSnapCoord.y % 2, intSnapCoord.x % 2);
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//LDEBUG("patch.center = [ " << patch.center.lat << " , " << patch.center.lon << " ]");
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//LDEBUG("intSnapCoord = [ " << intSnapCoord.x << " , " << intSnapCoord.y << " ]");
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//LDEBUG("contraction = [ " << contraction.x << " , " << contraction.y << " ]");
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// Get the textures that should be used for rendering
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GeodeticTileIndex tileIndex = _tileSet.getTileIndex(newPatch);
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GeodeticPatch tilePatch = _tileSet.getTilePositionAndScale(tileIndex);
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std::shared_ptr<ghoul::opengl::Texture> tile00 = _tileSet.getTile(tileIndex);
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glm::mat3 uvTransform = _tileSet.getUvTransformationPatchToTile(newPatch, tileIndex);
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// Bind and use the texture
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ghoul::opengl::TextureUnit texUnit;
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texUnit.activate();
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tile00->bind();
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_programObject->setUniform("textureSampler", texUnit);
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_programObject->setUniform("uvTransformPatchToTile", mat3(uvTransform));
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_programObject->setUniform(
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"modelViewProjectionTransform",
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data.camera.projectionMatrix() * viewTransform * modelTransform);
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_programObject->setUniform("segmentsPerPatch", segmentsPerPatch);
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_programObject->setUniform("minLatLon", vec2(newPatch.southWestCorner().toLonLatVec2()));
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_programObject->setUniform("lonLatScalingFactor", vec2(patchSize.toLonLatVec2()));
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_programObject->setUniform("radiiSquared", vec3(ellipsoid.radiiSquared()));
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_programObject->setUniform("contraction", contraction);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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// render
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_grid->geometry().drawUsingActiveProgram();
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// disable shader
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_programObject->deactivate();
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}
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} // namespace openspace
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