mirror of
https://github.com/OpenSpace/OpenSpace.git
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155 lines
5.2 KiB
C++
155 lines
5.2 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 <ghoul/misc/assert.h>
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#include <modules/globebrowsing/datastructures/chunknode.h>
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#include <modules/globebrowsing/datastructures/latlon.h>
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namespace {
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const std::string _loggerCat = "LatLon";
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}
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namespace openspace {
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//////////////////////////////////////////////////////////////////////////////////////////
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// LATITUDE LONGITUDE //
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//////////////////////////////////////////////////////////////////////////////////////////
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LatLon::LatLon()
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: lat(0)
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, lon(0)
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{}
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LatLon::LatLon(Scalar latitude, Scalar longitude)
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: lat(latitude)
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, lon(longitude)
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{
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}
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LatLon::LatLon(const LatLon& p)
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: LatLon(p.lat, p.lon)
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{
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}
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LatLon LatLon::fromCartesian(const Vec3& v) {
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Scalar r = glm::length(v);
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return LatLon(glm::asin(v.z / r), atan2(v.y, v.x));
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}
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Vec3 LatLon::asUnitCartesian() const{
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return Vec3(
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glm::cos(lat) * glm::cos(lon),
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glm::cos(lat) * glm::sin(lon),
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glm::sin(lat));
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}
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Vec2 LatLon::toLonLatVec2() const {
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return Vec2(lon, lat);
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}
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bool LatLon::operator==(const LatLon& other) {
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return lat == other.lat && lon == other.lon;
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}
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//////////////////////////////////////////////////////////////////////////////////////////
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// LATITUDE LONGITUDE PATCH //
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//////////////////////////////////////////////////////////////////////////////////////////
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LatLonPatch::LatLonPatch(Scalar centerLat, Scalar centerLon, Scalar halfSizeLat, Scalar halfSizeLon)
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: _center(LatLon(centerLat, centerLon))
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, _halfSize(LatLon(halfSizeLat, halfSizeLon))
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{
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}
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LatLonPatch::LatLonPatch(const LatLon& center, const LatLon& halfSize)
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: _center(center)
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, _halfSize(halfSize)
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{
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}
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LatLonPatch::LatLonPatch(const LatLonPatch& patch)
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: _center(patch._center)
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, _halfSize(patch._halfSize)
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{
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}
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void LatLonPatch::setCenter(const LatLon& center) {
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_center = center;
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}
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void LatLonPatch::setHalfSize(const LatLon& halfSize) {
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_halfSize = halfSize;
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}
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Scalar LatLonPatch::minimalBoundingRadius() const {
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const LatLon& cornerNearEquator = _center.lat > 0 ? southWestCorner() : northWestCorner();
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return glm::length(_center.asUnitCartesian() - cornerNearEquator.asUnitCartesian());
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}
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Scalar LatLonPatch::unitArea() const {
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Scalar deltaTheta = 2 * _halfSize.lon;
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Scalar phiMin = _center.lat - _halfSize.lat;
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Scalar phiMax = _center.lat + _halfSize.lat;
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return deltaTheta * (sin(phiMax) - sin(phiMin));
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}
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const LatLon& LatLonPatch::center() const {
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return _center;
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}
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const LatLon& LatLonPatch::halfSize() const {
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return _halfSize;
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}
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LatLon LatLonPatch::size() const {
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return LatLon(2 * _halfSize.lat, 2 * _halfSize.lon);
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}
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LatLon LatLonPatch::northWestCorner() const{
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return LatLon(_center.lat + _halfSize.lat, _center.lon - _halfSize.lon);
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}
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LatLon LatLonPatch::northEastCorner() const{
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return LatLon(_center.lat + _halfSize.lat, _center.lon + _halfSize.lon);
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}
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LatLon LatLonPatch::southWestCorner() const{
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return LatLon(_center.lat - _halfSize.lat, _center.lon - _halfSize.lon);
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}
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LatLon LatLonPatch::southEastCorner() const{
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return LatLon(_center.lat - _halfSize.lat, _center.lon + _halfSize.lon);
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}
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} // namespace openspace
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