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76 lines
3.6 KiB
C++
76 lines
3.6 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2017 *
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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/other/distanceswitch.h>
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#include <openspace/rendering/renderable.h>
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#include <openspace/util/updatestructures.h>
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namespace openspace::globebrowsing {
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DistanceSwitch::~DistanceSwitch() {}
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bool DistanceSwitch::initialize() {
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for (unsigned int i = 0; i < _renderables.size(); ++i) {
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_renderables[i]->initialize();
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}
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return true;
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}
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bool DistanceSwitch::deinitialize() {
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for (unsigned int i = 0; i < _renderables.size(); ++i) {
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_renderables[i]->deinitialize();
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}
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return true;
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}
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void DistanceSwitch::render(const RenderData& data, RendererTasks& tasks) {
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const double distanceToCamera =
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distance(data.camera.positionVec3(), data.modelTransform.translation);
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// This distance will be enough to render the globe as one pixel if the field of
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// view is 'fov' radians and the screen resolution is 'res' pixels.
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const double fov = 2 * glm::pi<double>() / 6; // 60 degrees
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int res = 2880;
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// linear search through nodes to find which Renderable to render
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for (std::shared_ptr<Renderable> renderable : _renderables) {
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const double distance = res * renderable->boundingSphere() / tan(fov / 2);
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if (distanceToCamera < distance) {
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renderable->render(data, tasks);
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}
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}
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}
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void DistanceSwitch::update(const UpdateData& data) {
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for (std::shared_ptr<Renderable> renderable : _renderables) {
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renderable->update(data);
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}
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}
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void DistanceSwitch::addSwitchValue(std::shared_ptr<Renderable> renderable) {
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_renderables.push_back(renderable);
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}
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} // namespace openspace::globebrowsing
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