mirror of
https://github.com/OpenSpace/OpenSpace.git
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231 lines
8.2 KiB
C++
231 lines
8.2 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014 *
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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 <openspace/rendering/renderablepath.h>
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#include <openspace/engine/openspaceengine.h>
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#include <openspace/util/constants.h>
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#include <ghoul/opengl/texturereader.h>
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#include <ghoul/opengl/textureunit.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <openspace/util/spicemanager.h>
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#include <iomanip>
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#include <utility>
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namespace {
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const std::string _loggerCat = "RenderablePath";
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//constants
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const std::string keyBody = "Body";
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const std::string keyObserver = "Observer";
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const std::string keyFrame = "Frame";
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const std::string keyPathModule = "ModulePath";
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const std::string keyColor = "RGB";
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}
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#define DEBUG
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namespace openspace{
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RenderablePath::RenderablePath(const ghoul::Dictionary& dictionary)
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: Renderable(dictionary)
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, _colorTexturePath("colorTexture", "Color Texture")
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, _programObject(nullptr)
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, _texture(nullptr)
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, _vaoID(0)
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, _vBufferID(0)
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, _iBufferID(0)
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, _mode(GL_LINE_STRIP){
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assert(dictionary.getValue(keyBody, _target));
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assert(dictionary.getValue(keyObserver, _observer));
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assert(dictionary.getValue(keyFrame, _frame));
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/*assert(dictionary.getValue(keyTropicalOrbitPeriod, _tropic));
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assert(dictionary.getValue(keyEarthOrbitRatio, _ratio));
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assert(dictionary.getValue(keyDayLength, _day));//not used now, will be though.
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// values in modfiles set from here*/
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// http://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html
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//white is default col
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if (!dictionary.getValue(keyColor, _c)){
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_c = glm::vec3(0.0);
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}
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else{
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_r = 1 / _c[0];
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_g = 1 / _c[1];
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_b = 1 / _c[2];
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}
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}
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void RenderablePath::fullYearSweep(){
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double lightTime = 0.0;
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SpiceManager::ref().getETfromDate("2006 jul 04 22:00:00", _time);
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// -------------------------------------- ^ this has to be simulation start-time, not passed in here though --
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double et2 = 0;
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//SpiceManager::ref().getETfromDate("2008 apr 01 00:00:00", et2);
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//psc nhpos, nhvel;
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//SpiceManager::ref().getTargetState("NEW HORIZONS", "SUN", "J2000", "LT+S", et2, _pscpos, _pscvel, lightTime);
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double et = _time;
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int segments = 20000;
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_increment = 6*3600;
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_isize = (segments + 2);
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_vsize = (segments + 2);
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_iarray = new int[_isize];
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int indx = 0;
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for (int i = 0; i < segments + 1; i++){
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SpiceManager::ref().getTargetState(_target, _observer, _frame, "LT+S", et, _pscpos, _pscvel, lightTime);
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if (_pscpos[0] != 0 && _pscpos[1] != 0 && _pscpos[2] != 0 && _pscpos[3] != 1){
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/*std::cout << _target << " " << _observer << " " << _frame <<
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_pscpos[0] << " " << _pscpos[1] << " " << _pscpos[2] << " " << _pscpos[3] << std::endl;
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*/
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_varray.push_back(_pscpos[0]);
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_varray.push_back(_pscpos[1]);
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_varray.push_back(_pscpos[2]);
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_varray.push_back(_pscpos[3]);
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#ifndef DEBUG
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_varray.push_back(1.f - ((double)i / _tropic * _r));
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_varray.push_back(1.f - ((double)i / _tropic * _g));
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_varray.push_back(1.f - ((double)i / _tropic * _b));
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_varray.push_back(1.f - ((double)i / _tropic));
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#else
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_varray.push_back(1.f);
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_varray.push_back(1.f);
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_varray.push_back(1.f);
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_varray.push_back(1.f);
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#endif
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indx++;
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_iarray[indx] = indx;
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}
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et += _increment;
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}
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_stride = 8;
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_vsize = _varray.size();
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_vtotal = static_cast<int>(_vsize / _stride);
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}
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RenderablePath::~RenderablePath(){
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deinitialize();
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}
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bool RenderablePath::initialize(){
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bool completeSuccess = true;
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if (_programObject == nullptr)
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completeSuccess
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&= OsEng.ref().configurationManager().getValue("EphemerisProgram", _programObject);
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//TEXTURES DISABLED FOR NOW
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//loadTexture();
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completeSuccess &= (_texture != nullptr);
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fullYearSweep();
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// Initialize and upload to graphics card
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glGenVertexArrays(1, &_vaoID);
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glGenBuffers(1, &_vBufferID);
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glGenBuffers(1, &_iBufferID);
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glBindVertexArray(_vaoID);
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glBindBuffer(GL_ARRAY_BUFFER, _vBufferID);
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glBufferData(GL_ARRAY_BUFFER, _vsize * sizeof(GLfloat), NULL, GL_STREAM_DRAW); // orphaning the buffer, sending NULL data.
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize * sizeof(GLfloat), &_varray[0]);
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GLsizei st = sizeof(GLfloat) * _stride;
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glEnableVertexAttribArray(0);
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glEnableVertexAttribArray(1);
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glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, st, (void*)0);
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glVertexAttribPointer(1, 4, GL_FLOAT, GL_FALSE, st, (void*)(4 * sizeof(GLfloat)));
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iBufferID);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize * sizeof(int), _iarray, GL_STATIC_DRAW);
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glBindVertexArray(0);
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return completeSuccess;
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}
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bool RenderablePath::deinitialize(){
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delete _texture;
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_texture = nullptr;
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return true;
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}
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void RenderablePath::render(const RenderData& data){
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assert(_programObject);
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_programObject->activate();
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// fetch data
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psc currentPosition = data.position;
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psc campos = data.camera.position();
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glm::mat4 camrot = data.camera.viewRotationMatrix();
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// PowerScaledScalar scaling = camera->scaling();
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PowerScaledScalar scaling = glm::vec2(1, -6);
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glm::mat4 transform = glm::mat4(1);
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// setup the data to the shader
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//_programObject->setUniform("objectVelocity", pscvel.vec4());
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_programObject->setUniform("ViewProjection", data.camera.viewProjectionMatrix());
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_programObject->setUniform("ModelTransform", transform);
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_programObject->setUniform("campos", campos.vec4());
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_programObject->setUniform("objpos", currentPosition.vec4());
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_programObject->setUniform("camrot", camrot);
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_programObject->setUniform("scaling", scaling.vec2());
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glBindVertexArray(_vaoID);
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glDrawArrays(_mode, 0, _vtotal);
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glBindVertexArray(0);
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glPointSize(2.f);
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glBindVertexArray(_vaoID);
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glDrawArrays(GL_POINTS, 0, _vtotal);
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glBindVertexArray(0);
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_programObject->deactivate();
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}
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void RenderablePath::update(const UpdateData& data){
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double lightTime;
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_time = data.time;
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_delta = data.delta;
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int newhorizons = 0;
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SpiceManager::ref().getTargetState(_target, _observer, _frame, "LT+S", data.time, _pscpos, _pscvel, lightTime);
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}
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void RenderablePath::loadTexture()
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{
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delete _texture;
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_texture = nullptr;
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if (_colorTexturePath.value() != "") {
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_texture = ghoul::opengl::loadTexture(absPath(_colorTexturePath));
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if (_texture) {
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LDEBUG("Loaded texture from '" << absPath(_colorTexturePath) << "'");
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_texture->uploadTexture();
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}
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}
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}
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} |