mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-03-18 03:20:33 -05:00
606 lines
19 KiB
C++
606 lines
19 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/renderablefov.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 = "RenderableFov";
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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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RenderableFov::RenderableFov(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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, _vaoID1(0)
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, _vboID1(0)
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, _iboID1(0)
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, _vaoID2(0)
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, _vboID2(0)
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, _iboID2(0)
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, _mode(GL_LINES){
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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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}
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void RenderableFov::allocateData(){
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int points = 8;
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_stride = 8;
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_isize = points;
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_iarray1 = new int[_isize];
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for (int i = 0; i < points; i++){
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for (int j = 0; j < 4; j++){
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_varray1.push_back(0); // pos
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}
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for (int j = 0; j < 4; j++){
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_varray1.push_back(0); // col
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}
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_iarray1[i] = i;
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}
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_stride = 8;
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_vsize = _varray1.size();
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_vtotal = static_cast<int>(_vsize / _stride);
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// allocate second vbo data
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int cornerPoints = 5;
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_isize2 = cornerPoints;
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_iarray2 = new int[_isize2];
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for (int i = 0; i < _isize2; i++){
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_iarray2[i] = i;
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}
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_varray2.resize(40);
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_vsize2 = 40;
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_vtotal2 = 5;
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/*
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// 0 1 2 3 4 (point nr)
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// 0 1 2 3 | 4 5 6 7 | 8 9 10 11 | 12 13 14 15 | 16 17 18 19 | 20 21 22 23 | 24 25 26 27 | 28 29 30 31 | 32 33 34 35 | 36 37 38 39 |
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// 8 16 24 32 (point index)
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*/
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}
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RenderableFov::~RenderableFov(){
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deinitialize();
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}
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bool RenderableFov::initialize(){
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bool completeSuccess = true;
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if (_programObject == nullptr)
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completeSuccess &= OsEng.ref().configurationManager().getValue("EphemerisProgram", _programObject);
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allocateData();
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sendToGPU();
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return completeSuccess;
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}
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bool RenderableFov::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 RenderableFov::sendToGPU(){
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// Initialize and upload to graphics card
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glGenVertexArrays(1, &_vaoID1);
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glGenBuffers(1, &_vboID1);
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glGenBuffers(1, &_iboID1);
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glBindVertexArray(_vaoID1);
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glBindBuffer(GL_ARRAY_BUFFER, _vboID1);
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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), &_varray1[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, _iboID1);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize * sizeof(int), _iarray1, GL_STATIC_DRAW);
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glBindVertexArray(0);
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// second vbo
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glGenVertexArrays(1, &_vaoID2);
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glGenBuffers(1, &_vboID2);
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glGenBuffers(1, &_iboID2);
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glBindVertexArray(_vaoID2);
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glBindBuffer(GL_ARRAY_BUFFER, _vboID2);
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glBufferData(GL_ARRAY_BUFFER, _vsize2 * sizeof(GLfloat), NULL, GL_STREAM_DRAW); // orphaning the buffer, sending NULL data.
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize2 * sizeof(GLfloat), &_varray2[0]);
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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, _iboID2);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize2 * sizeof(int), _iarray2, GL_STATIC_DRAW);
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glBindVertexArray(0);
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}
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/*
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void RenderableFov::findSegmentSplit(bool tag[]){
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psc start, end, newPoint;
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for (int i = 4; i > 0; i--){
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if (tag[i] != tag[i - 1]){
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int index = findIndx(i, i - 1);
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getIntervalEndpoints(start, end, index);
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newPoint = pscInterpolate(start, end, 0.5f); // point inbetween
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insertPoint(index, newPoint);
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}
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}
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}
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*/
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/*
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void RenderableFov::getIntervalEndpoints(psc& p1, psc& p2, int index){
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int secondIndex = index-_stride;
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for (int i = 0; i < 4; i++){
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p2[i] = _varray2[index];
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p1[i] = _varray2[secondIndex];
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index++;
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secondIndex++;
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}
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}*/
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/*
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int RenderableFov::findIndx(unsigned int p1, unsigned int p2) const{
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assert(p1 != p2 && _stride > 0);
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int idx = (p1 > p2) ? p1*_stride : p2*_stride;
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if (idx > _varray2.size()-_stride){
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LERROR("Out of bounds for points " << p1 << " and " << p2
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<< " will return index 0");
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return 0;
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}
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return idx;
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}
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*/
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void RenderableFov::insertPoint(int index, psc point){
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std::rotate(_varray2.begin(), _varray2.begin() + index, _varray2.end());
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std::reverse(_varray2.begin(), _varray2.end());
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_varray2.push_back(1);
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_varray2.push_back(0);
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_varray2.push_back(0);
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_varray2.push_back(1);
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for (int i = 0; i < 4; i++){
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_varray2.push_back(point[3-i]); // add new point
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}
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std::rotate(_varray2.begin(), _varray2.begin() + index, _varray2.end());
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std::reverse(_varray2.begin(), _varray2.end());
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_vtotal2 += 1;
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_isize2 += 1;
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_vsize2 = _varray2.size();
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//update size etc;
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for (int i = 0; i < _isize2; i++){
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_iarray2[i] = i;
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}
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glGenVertexArrays(1, &_vaoID2);
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glGenBuffers(1, &_vboID2);
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glGenBuffers(1, &_iboID2);
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glBindVertexArray(_vaoID2);
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glBindBuffer(GL_ARRAY_BUFFER, _vboID2);
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glBufferData(GL_ARRAY_BUFFER, _vsize2 * sizeof(GLfloat), NULL, GL_STREAM_DRAW); // orphaning the buffer, sending NULL data.
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize2 * sizeof(GLfloat), &_varray2[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, _iboID2);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize2 * sizeof(int), _iarray2, GL_STATIC_DRAW);
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glBindVertexArray(0);
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}
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void RenderableFov::printFovArray(){
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int tmp = 0;
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for (int i = 0; i < _varray2.size(); i++){
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std::cout << _varray2[i] << " ";
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tmp++;
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if (tmp == 4){
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std::cout << std::endl;
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tmp = 0;
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}
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}
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std::cout << "\n";
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}
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void RenderableFov::insertPoint(psc& p, glm::vec4& c){
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for (int i = 0; i < 4; i++){
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_varray2.push_back(p[i]);
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}
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for (int i = 0; i < 4; i++){
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_varray2.push_back(c[i]);
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}
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_nrInserted++;
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}
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double RenderableFov::distanceBetweenPoints(psc p1, psc p2){
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PowerScaledScalar dist = (p1 - p2).length();
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return dist[0] * pow(10, dist[1]);
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}
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double RenderableFov::distanceBetweenPoints(glm::dvec3 p1, glm::dvec3 p2){
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glm::dvec3 tmp = p1 - p2;
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return sqrt(tmp[0] * tmp[0] + tmp[1] * tmp[1] + tmp[2] * tmp[2]);
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}
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psc RenderableFov::pscInterpolate(psc p0, psc p1, float t){
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assert(t >= 0 && t <= 1);
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float s = (1.f - t)*p0[3] + t*p1[3];
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float x = ((1.f - t)*p0[0] + t*p1[0]);
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float y = ((1.f - t)*p0[1] + t*p1[1]);
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float z = ((1.f - t)*p0[2] + t*p1[2]);
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return PowerScaledCoordinate::PowerScaledCoordinate(x, y, z, s);
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}
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glm::dvec3 RenderableFov::interpolate(glm::dvec3 p0, glm::dvec3 p1, float t){
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assert(t >= 0 && t <= 1);
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float x = ((1.f - t)*p0[0] + t*p1[0]);
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float y = ((1.f - t)*p0[1] + t*p1[1]);
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float z = ((1.f - t)*p0[2] + t*p1[2]);
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return glm::dvec3(x, y, z);
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}
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psc RenderableFov::findSegmentIntercept(glm::dvec3 p1, glm::dvec3 p2, double tolerance){
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glm::dvec3 half = interpolate(p1, p2, 0.5f);
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//check if point is on surface
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glm::dvec3 h(half[0], half[1], half[2]);
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double targetEt;
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glm::dvec3 ip, iv;
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bool intercepted = openspace::SpiceManager::ref().getSurfaceIntercept("JUPITER", "NEW HORIZONS", "NH_LORRI",
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"GALACTIC", "ELLIPSOID", "NONE", _time, targetEt, half, ip, iv);
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if (distanceBetweenPoints(_previousHalf, half) < tolerance){
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_previousHalf = glm::dvec3(0);
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return orthogonalProjection(half);
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}
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_previousHalf = half;
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//recursive search
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if (intercepted == false){
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return findSegmentIntercept(p1, half, tolerance);
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}else{
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return findSegmentIntercept(half, p2, tolerance);
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}
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}
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/*
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[3]---------[4]/[0]
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| |
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| FOV |
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[2]-----------[1]
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CASE 1:
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H[i] H[i+1]
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[X]---------x...........[O]
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| / :
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| / :
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| / :
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x / :
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/: :
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/ : :
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[O].....................[O]
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*/
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void RenderableFov::rebuildFOV(bool H[], std::vector<glm::dvec3> bounds){
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_nrInserted = 0;
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_varray2.clear();// empty the array
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int isteps = 4;
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for (int i = 0; i < 4; i++){
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psc current = orthogonalProjection(bounds[i]);
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insertPoint(current, glm::vec4(1));
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int k = (i + 1 > 3) ? 0 : i + 1;
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psc next = orthogonalProjection(bounds[k]);
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// CASE 1
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if (H[i] == true && H[i + 1] == false){
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psc mid = findSegmentIntercept(bounds[i], bounds[k], 0.00001); // very low tolerance factor, might be precision issue
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for (int j = 1; j < isteps; j++){
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psc interpolated = pscInterpolate(current, mid, (double)j / isteps);
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insertPoint(interpolated, glm::vec4(1));
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}
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}
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if (H[i] == false && H[i+1] == true){
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psc mid = findSegmentIntercept(bounds[k], bounds[i], 0.0000001);
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for (int j = 1; j < isteps; j++){
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psc interpolated = pscInterpolate(mid, next, (double)j / isteps);
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insertPoint(interpolated, glm::vec4(1));
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}
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}
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// just add remaining points for now...
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if (H[i] == true && H[i + 1] == true){ // CASE 3
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for (int j = 1; j < isteps; j++){
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psc interpolated = pscInterpolate(current, next, (double)j / isteps);
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insertPoint(interpolated, glm::vec4(1));
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}
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}
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}
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//last point add
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psc last = orthogonalProjection(bounds[0]);
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insertPoint(last, glm::vec4(1));
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_vtotal2 = _nrInserted;
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_isize2 = _nrInserted;
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_vsize2 = _varray2.size();
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//update size etc;
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_iarray2 = new int[_isize2];
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for (int i = 0; i < _isize2; i++){
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_iarray2[i] = i;
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}
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//optimize later
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glGenVertexArrays(1, &_vaoID2);
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glGenBuffers(1, &_vboID2);
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glGenBuffers(1, &_iboID2);
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glBindVertexArray(_vaoID2);
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glBindBuffer(GL_ARRAY_BUFFER, _vboID2);
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glBufferData(GL_ARRAY_BUFFER, _vsize2 * sizeof(GLfloat), NULL, GL_STREAM_DRAW); // orphaning the buffer, sending NULL data.
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize2 * sizeof(GLfloat), &_varray2[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, _iboID2);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize2 * sizeof(int), _iarray2, GL_STATIC_DRAW);
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glBindVertexArray(0);
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}
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void RenderableFov::updateData(){
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glBindBuffer(GL_ARRAY_BUFFER, _vboID1);
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize * sizeof(GLfloat), &_varray1[0]);
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glBindBuffer(GL_ARRAY_BUFFER, _vboID2);
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glBufferSubData(GL_ARRAY_BUFFER, 0, _vsize2 * sizeof(GLfloat), &_varray2[0]);
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}
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psc RenderableFov::orthogonalProjection(glm::dvec3 vecFov){
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glm::dvec3 vecToTarget;
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double lt;
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SpiceManager::ref().getTargetPosition("JUPITER", "NEW HORIZONS", "GALACTIC", "NONE", _time, vecToTarget, lt);
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openspace::SpiceManager::ref().frameConversion(vecFov, "NH_LORRI", "GALACTIC", _time);
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glm::dvec3 p = openspace::SpiceManager::ref().orthogonalProjection(vecToTarget, vecFov);
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psc projection = PowerScaledCoordinate::CreatePowerScaledCoordinate(p[0], p[1], p[2]);
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projection[3] += 3;
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return projection;
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}
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void RenderableFov::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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glm::mat4 transform(1);
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glm::mat4 tmp = glm::mat4(1);
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for (int i = 0; i < 3; i++){
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for (int j = 0; j < 3; j++){
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tmp[i][j] = _stateMatrix[i][j];
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}
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}
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// setup the data to the shader
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_programObject->setUniform("ViewProjection", data.camera.viewProjectionMatrix());
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_programObject->setUniform("ModelTransform", transform);
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setPscUniforms(_programObject, &data.camera, data.position);
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if (_oldTime != _time){
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//boresight vector
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std::string shape, instrument;
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std::vector<glm::dvec3> bounds;
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glm::dvec3 boresight;
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bool found = openspace::SpiceManager::ref().getFieldOfView("NH_LORRI", shape, instrument, boresight, bounds);
|
|
if (!found) LERROR("Could not locate instrument"); // fixlater
|
|
|
|
float size = 4 * sizeof(float);
|
|
|
|
// just some colors to help with debugging
|
|
glm::vec4 origin(0);
|
|
glm::vec4 col_gray(0.3, 0.3, 0.3, 1);
|
|
glm::vec4 col_start(1.00, 0.89, 0.00, 1);
|
|
glm::vec4 col_end(1.00, 0.29, 0.00, 1);
|
|
glm::vec4 col_proj(1, 1, 1, 1);
|
|
|
|
int indx = 0;
|
|
int indx2 = 0;
|
|
|
|
psc projectionBounds[4];
|
|
bool tags[5];
|
|
|
|
/**
|
|
* NOTE: THIS CLASS IS UNDER DEVELOPMENT AND THEREFORE NON-OPTIMIZED
|
|
*/
|
|
|
|
for (int i = 0; i < 4; i++){
|
|
// might as well take glm. Would be nice if we had just one type to deal with here...
|
|
glm::dvec3 ip, iv;
|
|
double targetEpoch;
|
|
// need to keep it explicit to keep my mind from exploding.
|
|
found = openspace::SpiceManager::ref().getSurfaceIntercept("JUPITER", "NEW HORIZONS", "NH_LORRI",
|
|
"GALACTIC", "ELLIPSOID", "NONE", _time, targetEpoch, bounds[i], ip, iv);
|
|
|
|
psc interceptVector = PowerScaledCoordinate::CreatePowerScaledCoordinate(iv[0], iv[1], iv[2]);
|
|
interceptVector[3] += 3;
|
|
glm::vec4 corner(bounds[i][0], bounds[i][1], bounds[i][2], data.position[3]);
|
|
|
|
corner = tmp*corner; // manual rotation is a must.
|
|
|
|
if (found){
|
|
// INTERCEPTIONS
|
|
tags[i] = true;
|
|
|
|
memcpy(&_varray1[indx], glm::value_ptr(origin), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(col_start), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(interceptVector.vec4()), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(col_end), size);
|
|
indx += 4;
|
|
}else{
|
|
// "INFINITE" FOV
|
|
tags[i] = false;
|
|
|
|
memcpy(&_varray1[indx], glm::value_ptr(origin), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(col_gray), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(corner), size);
|
|
indx += 4;
|
|
memcpy(&_varray1[indx], glm::value_ptr(glm::vec4(0)), size);
|
|
indx += 4;
|
|
}
|
|
|
|
// COMPUTE ORTHOGONAL PROJECTION. -- have to make cosmetic changes to this later.
|
|
//projectionBounds[i] = orthogonalProjection(bounds[i]);
|
|
|
|
/* // failed attempt at aberrated state.
|
|
openspace::SpiceManager::ref().getPositionTransformMatrix("NH_LORRI", "IAU_JUPITER", _time, targetEpoch, _stateMatrix);
|
|
glm::vec4 corner2(bounds[i][0], bounds[i][1], bounds[i][2], data.position[3]);
|
|
|
|
corner2 = tmp*corner2;
|
|
*/
|
|
}
|
|
|
|
tags[4] = tags[0]; // 0 & 5 same point
|
|
|
|
//findSegmentSplit(tags);
|
|
/*
|
|
// draworder r->g->b->y
|
|
glm::vec4 boundary_col[4] = { glm::vec4(1, 0, 0, 1), glm::vec4(0, 1, 0, 1), glm::vec4(0, 0, 1, 1), glm::vec4(1, 1, 0, 1) };
|
|
|
|
for (int i = 0; i < 4; i++){
|
|
memcpy(&_varray2[indx2], glm::value_ptr(projectionBounds[i].vec4()), size);
|
|
indx2 += 4;
|
|
memcpy(&_varray2[indx2], glm::value_ptr(boundary_col[i]), size);
|
|
indx2 += 4;
|
|
}
|
|
|
|
//last point, finish lineloop
|
|
psc lastpoint = orthogonalProjection(bounds[0]);
|
|
memcpy(&_varray2[indx2], glm::value_ptr(lastpoint.vec4()), size);
|
|
indx2 += 4;
|
|
memcpy(&_varray2[indx2], glm::value_ptr(boundary_col[0]), size);
|
|
indx2 += 4;
|
|
*/
|
|
|
|
rebuildFOV(tags, bounds);
|
|
|
|
updateData();
|
|
}
|
|
_oldTime = _time;
|
|
|
|
glBindVertexArray(_vaoID1);
|
|
glDrawArrays(_mode, 0, _vtotal);
|
|
glBindVertexArray(0);
|
|
|
|
//render points
|
|
glPointSize(10.f);
|
|
glBindVertexArray(_vaoID1);
|
|
glDrawArrays(GL_POINTS, 0, _vtotal);
|
|
glBindVertexArray(0);
|
|
|
|
//second vbo
|
|
glBindVertexArray(_vaoID2);
|
|
glDrawArrays(GL_LINE_STRIP, 0, _vtotal2);
|
|
glBindVertexArray(0);
|
|
|
|
glPointSize(7.f);
|
|
glBindVertexArray(_vaoID2);
|
|
glDrawArrays(GL_POINTS, 0, _vtotal2);
|
|
glBindVertexArray(0);
|
|
|
|
_programObject->deactivate();
|
|
}
|
|
|
|
void RenderableFov::update(const UpdateData& data){
|
|
double lightTime;
|
|
_time = data.time;
|
|
_delta = data.delta;
|
|
|
|
openspace::SpiceManager::ref().getPositionTransformMatrix("NH_LORRI", "GALACTIC", data.time, _stateMatrix);
|
|
}
|
|
|
|
void RenderableFov::loadTexture()
|
|
{
|
|
delete _texture;
|
|
_texture = nullptr;
|
|
if (_colorTexturePath.value() != "") {
|
|
_texture = ghoul::opengl::loadTexture(absPath(_colorTexturePath));
|
|
if (_texture) {
|
|
LDEBUG("Loaded texture from '" << absPath(_colorTexturePath) << "'");
|
|
_texture->uploadTexture();
|
|
}
|
|
}
|
|
}
|
|
|
|
} |