mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-03-20 04:20:26 -05:00
c14aa7b11b
- Change texture indices of PowerScaledSphere - Change texture generation in FBOBass for projections - Updated NewHorizons to download unflipped texture - Use new Ghoul version
320 lines
11 KiB
C++
320 lines
11 KiB
C++
/*****************************************************************************************
|
|
* *
|
|
* OpenSpace *
|
|
* *
|
|
* Copyright (c) 2014-2016 *
|
|
* *
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
|
|
* software and associated documentation files (the "Software"), to deal in the Software *
|
|
* without restriction, including without limitation the rights to use, copy, modify, *
|
|
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
|
|
* permit persons to whom the Software is furnished to do so, subject to the following *
|
|
* conditions: *
|
|
* *
|
|
* The above copyright notice and this permission notice shall be included in all copies *
|
|
* or substantial portions of the Software. *
|
|
* *
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
|
|
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
|
|
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
|
|
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
|
|
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
|
|
****************************************************************************************/
|
|
|
|
// open space includes
|
|
#include <openspace/util/powerscaledsphere.h>
|
|
#include <openspace/util/spicemanager.h>
|
|
#include <ghoul/logging/logmanager.h>
|
|
|
|
#define _USE_MATH_DEFINES
|
|
#include <math.h>
|
|
|
|
namespace {
|
|
const std::string _loggerCat = "PowerScaledSphere";
|
|
}
|
|
|
|
namespace openspace {
|
|
|
|
PowerScaledSphere::PowerScaledSphere(const PowerScaledScalar& radius, int segments)
|
|
: _vaoID(0)
|
|
, _vBufferID(0)
|
|
, _iBufferID(0)
|
|
, _isize(6 * segments * segments)
|
|
, _vsize((segments + 1) * (segments + 1))
|
|
, _varray(new Vertex[_vsize])
|
|
, _iarray(new int[_isize])
|
|
{
|
|
static_assert(sizeof(Vertex) == 64,
|
|
"The size of the Vertex needs to be 64 for performance");
|
|
|
|
int nr = 0;
|
|
const float fsegments = static_cast<float>(segments);
|
|
const float r = static_cast<float>(radius[0]);
|
|
|
|
for (int i = 0; i <= segments; i++) {
|
|
// define an extra vertex around the y-axis due to texture mapping
|
|
for (int j = 0; j <= segments; j++) {
|
|
const float fi = static_cast<float>(i);
|
|
const float fj = static_cast<float>(j);
|
|
// inclination angle (north to south)
|
|
const float theta = fi * float(M_PI) / fsegments; // 0 -> PI
|
|
|
|
// azimuth angle (east to west)
|
|
const float phi = fj * float(M_PI) * 2.0f / fsegments; // 0 -> 2*PI
|
|
|
|
const float x = r * sin(phi) * sin(theta); //
|
|
const float y = r * cos(theta); // up
|
|
const float z = r * cos(phi) * sin(theta); //
|
|
|
|
glm::vec3 normal = glm::vec3(x, y, z);
|
|
if (!(x == 0.f && y == 0.f && z == 0.f))
|
|
normal = glm::normalize(normal);
|
|
|
|
const float t1 = (fj / fsegments);
|
|
const float t2 = 1.f - (fi / fsegments);
|
|
|
|
//double tp = 1.0 / pow(10, static_cast<GLfloat>(radius[1]));
|
|
|
|
_varray[nr].location[0] = x;
|
|
_varray[nr].location[1] = y;
|
|
_varray[nr].location[2] = z;
|
|
_varray[nr].location[3] = static_cast<GLfloat>(radius[1]);
|
|
_varray[nr].normal[0] = normal[0];
|
|
_varray[nr].normal[1] = normal[1];
|
|
_varray[nr].normal[2] = normal[2];
|
|
|
|
_varray[nr].tex[0] = t1;
|
|
_varray[nr].tex[1] = t2;
|
|
++nr;
|
|
}
|
|
}
|
|
|
|
nr = 0;
|
|
// define indices for all triangles
|
|
for (int i = 1; i <= segments; ++i) {
|
|
for (int j = 0; j < segments; ++j) {
|
|
const int t = segments + 1;
|
|
_iarray[nr] = t * (i - 1) + j + 0; //1
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 0; //2
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 1; //3
|
|
++nr;
|
|
|
|
_iarray[nr] = t * (i - 1) + j + 0; //4
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 1; //5
|
|
++nr;
|
|
_iarray[nr] = t * (i - 1) + j + 1; //6
|
|
++nr;
|
|
|
|
/*
|
|
_iarray[nr] = t * (i - 1) + j + 0; //1
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 0; //2
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 1; //3
|
|
++nr;
|
|
_iarray[nr] = t * (i - 1) + j + 1; //6
|
|
++nr;
|
|
_iarray[nr] = t * (i - 1) + j + 0; //4
|
|
++nr;
|
|
*/
|
|
}
|
|
}
|
|
}
|
|
|
|
// Alternative Constructor for using accurate triaxial ellipsoid
|
|
PowerScaledSphere::PowerScaledSphere(properties::Vec4Property &radius, int segments, std::string planetName)
|
|
: _vaoID(0)
|
|
, _vBufferID(0)
|
|
, _iBufferID(0)
|
|
, _isize(6 * segments * segments)
|
|
, _vsize((segments + 1) * (segments + 1))
|
|
, _varray(new Vertex[_vsize])
|
|
, _iarray(new int[_isize])
|
|
{
|
|
static_assert(sizeof(Vertex) == 64,
|
|
"The size of the Vertex needs to be 64 for performance");
|
|
|
|
float a, b, c, powerscale;
|
|
bool accutareRadius;
|
|
try {
|
|
glm::dvec3 radii;
|
|
SpiceManager::ref().getValue(planetName, "RADII", radii);
|
|
a = radii.x;
|
|
b = radii.y;
|
|
c = radii.z;
|
|
accutareRadius = true;
|
|
}
|
|
catch (const SpiceManager::SpiceException& e) {
|
|
//LINFO("Could not find radius for body " << planetName);
|
|
accutareRadius = false;
|
|
}
|
|
|
|
if (accutareRadius) {
|
|
PowerScaledCoordinate powerScaledRadii = psc::CreatePowerScaledCoordinate(a, b, c);
|
|
powerScaledRadii[3] += 3; // SPICE returns radii in km
|
|
|
|
std::swap(powerScaledRadii[1], powerScaledRadii[2]); // c is equivalent to y in our coordinate system
|
|
radius.set(powerScaledRadii.vec4());
|
|
a = powerScaledRadii[0];
|
|
b = powerScaledRadii[1];
|
|
c = powerScaledRadii[2];
|
|
powerscale = powerScaledRadii[3];
|
|
}
|
|
else {
|
|
ghoul::any r = radius.get();
|
|
glm::vec4 modRadius = ghoul::any_cast<glm::vec4>(r);
|
|
a = modRadius[0];
|
|
b = modRadius[1];
|
|
c = modRadius[2];
|
|
powerscale = modRadius[3];
|
|
}
|
|
|
|
int nr = 0;
|
|
const float fsegments = static_cast<float>(segments);
|
|
|
|
for (int i = 0; i <= segments; i++) {
|
|
// define an extra vertex around the y-axis due to texture mapping
|
|
for (int j = 0; j <= segments; j++) {
|
|
const float fi = static_cast<float>(i);
|
|
const float fj = static_cast<float>(j);
|
|
// inclination angle (north to south)
|
|
const float theta = fi * float(M_PI) / fsegments; // 0 -> PI
|
|
// azimuth angle (east to west)
|
|
const float phi = fj * float(M_PI) * 2.0f / fsegments; // 0 -> 2*PI
|
|
|
|
const float x = a * sin(phi) * sin(theta); //
|
|
const float y = b * cos(theta); // up
|
|
const float z = c * cos(phi) * sin(theta); //
|
|
|
|
_varray[nr].location[0] = x;
|
|
_varray[nr].location[1] = y;
|
|
_varray[nr].location[2] = z;
|
|
_varray[nr].location[3] = powerscale;
|
|
|
|
glm::vec3 normal = glm::vec3(x, y, z);
|
|
if (!(x == 0.f && y == 0.f && z == 0.f))
|
|
normal = glm::normalize(normal);
|
|
|
|
_varray[nr].normal[0] = normal[0];
|
|
_varray[nr].normal[1] = normal[1];
|
|
_varray[nr].normal[2] = normal[2];
|
|
|
|
const float t1 = fj / fsegments;
|
|
const float t2 = 1.f - (fi / fsegments);
|
|
|
|
_varray[nr].tex[0] = t1;
|
|
_varray[nr].tex[1] = t2;
|
|
++nr;
|
|
}
|
|
}
|
|
|
|
nr = 0;
|
|
// define indices for all triangles
|
|
for (int i = 1; i <= segments; ++i) {
|
|
for (int j = 0; j < segments; ++j) {
|
|
const int t = segments + 1;
|
|
_iarray[nr] = t * (i - 1) + j + 0; //1
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 0; //2
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 1; //3
|
|
++nr;
|
|
|
|
_iarray[nr] = t * (i - 1) + j + 0; //4
|
|
++nr;
|
|
_iarray[nr] = t * (i + 0) + j + 1; //5
|
|
++nr;
|
|
_iarray[nr] = t * (i - 1) + j + 1; //6
|
|
++nr;
|
|
}
|
|
}
|
|
}
|
|
|
|
PowerScaledSphere::PowerScaledSphere(const PowerScaledSphere& cpy)
|
|
: _vaoID(cpy._vaoID)
|
|
, _vBufferID(cpy._vBufferID)
|
|
, _iBufferID(cpy._iBufferID)
|
|
, _isize(cpy._isize)
|
|
, _vsize(cpy._vsize)
|
|
, _varray(new Vertex[_vsize])
|
|
, _iarray(new int[_isize])
|
|
{
|
|
// @TODO This needs to be tested ---abock
|
|
|
|
std::memcpy(_varray, cpy._varray, _vsize * sizeof(Vertex));
|
|
std::memcpy(_iarray, cpy._iarray, _isize * sizeof(int));
|
|
}
|
|
|
|
PowerScaledSphere::~PowerScaledSphere() {
|
|
if (_varray)
|
|
delete[] _varray;
|
|
if (_iarray)
|
|
delete[] _iarray;
|
|
|
|
_varray = 0;
|
|
_iarray = 0;
|
|
|
|
glDeleteBuffers(1, &_vBufferID);
|
|
glDeleteBuffers(1, &_iBufferID);
|
|
glDeleteVertexArrays(1, &_vaoID);
|
|
}
|
|
|
|
bool PowerScaledSphere::initialize() {
|
|
// Initialize and upload to graphics card
|
|
if (_vaoID == 0)
|
|
glGenVertexArrays(1, &_vaoID);
|
|
|
|
if (_vBufferID == 0) {
|
|
glGenBuffers(1, &_vBufferID);
|
|
|
|
if (_vBufferID == 0) {
|
|
LERROR("Could not create vertex buffer");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (_iBufferID == 0) {
|
|
glGenBuffers(1, &_iBufferID);
|
|
|
|
if (_iBufferID == 0) {
|
|
LERROR("Could not create index buffer");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// First VAO setup
|
|
glBindVertexArray(_vaoID);
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, _vBufferID);
|
|
glBufferData(GL_ARRAY_BUFFER, _vsize * sizeof(Vertex), _varray, GL_STATIC_DRAW);
|
|
|
|
glEnableVertexAttribArray(0);
|
|
glEnableVertexAttribArray(1);
|
|
glEnableVertexAttribArray(2);
|
|
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex),
|
|
reinterpret_cast<const GLvoid*>(offsetof(Vertex, location)));
|
|
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex),
|
|
reinterpret_cast<const GLvoid*>(offsetof(Vertex, tex)));
|
|
glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),
|
|
reinterpret_cast<const GLvoid*>(offsetof(Vertex, normal)));
|
|
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iBufferID);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, _isize * sizeof(int), _iarray, GL_STATIC_DRAW);
|
|
|
|
glBindVertexArray(0);
|
|
return true;
|
|
}
|
|
|
|
void PowerScaledSphere::render() {
|
|
glBindVertexArray(_vaoID); // select first VAO
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _iBufferID);
|
|
glDrawElements(GL_TRIANGLES, _isize, GL_UNSIGNED_INT, 0);
|
|
glBindVertexArray(0);
|
|
}
|
|
|
|
} // namespace openspace
|