mirror of
https://github.com/OpenSpace/OpenSpace.git
synced 2026-01-01 09:10:18 -06:00
748 lines
26 KiB
C++
748 lines
26 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2019 *
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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/base/rendering/RenderableLabels.h>
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#include <modules/base/basemodule.h>
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#include <openspace/documentation/documentation.h>
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#include <openspace/documentation/verifier.h>
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#include <openspace/engine/globals.h>
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#include <openspace/rendering/renderengine.h>
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#include <openspace/scene/scenegraphnode.h>
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#include <openspace/util/updatestructures.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/filesystem/cachemanager.h>
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#include <ghoul/misc/crc32.h>
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#include <ghoul/misc/templatefactory.h>
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#include <ghoul/io/texture/texturereader.h>
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#include <ghoul/logging/logmanager.h>
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#include <ghoul/font/fontmanager.h>
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#include <ghoul/font/fontrenderer.h>
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#include <ghoul/misc/defer.h>
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#include <ghoul/opengl/programobject.h>
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#include <ghoul/opengl/texture.h>
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#include <ghoul/opengl/textureunit.h>
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#include <ghoul/glm.h>
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#include <glm/gtx/string_cast.hpp>
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namespace {
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constexpr const char* _loggerCat = "base::RenderableLabels";
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constexpr const char* MeterUnit = "m";
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constexpr const char* KilometerUnit = "Km";
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constexpr const char* AstronomicalUnit = "au";
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constexpr const char* ParsecUnit = "pc";
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constexpr const char* KiloparsecUnit = "Kpc";
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constexpr const char* MegaparsecUnit = "Mpc";
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constexpr const char* GigaparsecUnit = "Gpc";
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constexpr const char* GigalightyearUnit = "Gly";
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enum BlendMode {
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BlendModeNormal = 0,
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BlendModeAdditive
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};
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constexpr const int ViewDirection = 0;
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constexpr const int NormalDirection = 1;
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constexpr double PARSEC = 0.308567756E17;
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constexpr openspace::properties::Property::PropertyInfo BlendModeInfo = {
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"BlendMode",
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"Blending Mode",
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"This determines the blending mode that is applied to this plane."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelColorInfo = {
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"LabelColor",
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"Label Color",
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"The label color for the astronomical object."
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};
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constexpr openspace::properties::Property::PropertyInfo FontSizeInfo = {
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"FontSize",
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"Font Size",
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"The font size for the astronomical object labels."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelSizeInfo = {
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"LabelSize",
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"Label Size",
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"The label size for the astronomical object labels."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelTextInfo = {
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"LabelText",
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"Label Text",
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"The text that will be displayed on screen."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelMinSizeInfo = {
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"LabelMinSize",
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"Label Min Size",
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"The minimal size (in pixels) of the labels for the astronomical "
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"objects being rendered."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelMaxSizeInfo = {
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"LabelMaxSize",
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"Label Max Size",
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"The maximum size (in pixels) of the labels for the astronomical "
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"objects being rendered."
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};
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constexpr openspace::properties::Property::PropertyInfo TransformationMatrixInfo = {
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"TransformationMatrix",
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"Transformation Matrix",
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"Transformation matrix to be applied to each astronomical object."
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};
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constexpr openspace::properties::Property::PropertyInfo LabelOrientationOptionInfo = {
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"LabelOrientationOption",
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"Label Orientation Option",
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"Label orientation rendering mode."
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};
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constexpr openspace::properties::Property::PropertyInfo EnableFadingEffectInfo = {
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"EnableFading",
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"Enable/Disable Fade-in effect",
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"Enable/Disable the Fade-in effect."
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};
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constexpr openspace::properties::Property::PropertyInfo PixelSizeControlInfo = {
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"EnablePixelSizeControl",
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"Enable pixel size control.",
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"Enable pixel size control for rectangular projections."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeStartUnitOptionInfo = {
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"FadeStartUnit",
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"Fade-In/-Out Start Unit.",
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"Unit for fade-in/-out starting position calculation."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeEndUnitOptionInfo = {
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"FadeEndUnit",
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"Fade-In/-Out End Unit.",
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"Unit for fade-in/-out ending position calculation."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeStartDistInfo = {
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"FadeStartDistance",
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"Fade-In/-Out starting distance.",
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"Fade-In/-Out starting distance."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeEndDistInfo = {
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"FadeEndDistance",
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"Fade-In/-Out ending distance.",
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"Fade-In/-Out ending distance."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeStartSpeedInfo = {
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"FadeStartSpeed",
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"Fade-In/-Out starting speed.",
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"Fade-In/-Out starting speed."
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};
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constexpr openspace::properties::Property::PropertyInfo FadeEndSpeedInfo = {
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"FadeEndSpeed",
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"Fade-In/-Out ending speed.",
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"Fade-In/-Out ending speed."
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};
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} // namespace
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namespace openspace {
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documentation::Documentation RenderableLabels::Documentation() {
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using namespace documentation;
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return {
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"Renderable Labels",
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"base_renderable_labels",
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{
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{
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BlendModeInfo.identifier,
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new StringInListVerifier({ "Normal", "Additive" }),
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Optional::Yes,
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BlendModeInfo.description, // + " The default value is 'Normal'.",
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},
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{
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LabelOrientationOptionInfo.identifier,
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new StringInListVerifier({ "Camera View Direction", "Camera Position Normal" }),
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Optional::Yes,
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LabelOrientationOptionInfo.description,
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},
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{
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LabelColorInfo.identifier,
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new DoubleVector4Verifier,
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Optional::Yes,
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LabelColorInfo.description,
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},
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{
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LabelColorInfo.identifier,
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new DoubleVector4Verifier,
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Optional::Yes,
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LabelColorInfo.description,
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},
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{
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LabelTextInfo.identifier,
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new StringVerifier,
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Optional::No,
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LabelTextInfo.description
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},
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{
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FontSizeInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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FontSizeInfo.description
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},
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{
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LabelSizeInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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LabelSizeInfo.description
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},
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{
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LabelMinSizeInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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LabelMinSizeInfo.description
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},
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{
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LabelMaxSizeInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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LabelMaxSizeInfo.description
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},
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{
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EnableFadingEffectInfo.identifier,
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new BoolVerifier,
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Optional::Yes,
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EnableFadingEffectInfo.description
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},
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{
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PixelSizeControlInfo.identifier,
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new BoolVerifier,
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Optional::Yes,
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PixelSizeControlInfo.description
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},
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{
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FadeStartUnitOptionInfo.identifier,
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new StringInListVerifier({"m", "Km", "au", "pc", "Kpc", "Mpc", "Gpc", "Gly"}),
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Optional::Yes,
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FadeStartUnitOptionInfo.description,
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},
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{
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FadeEndUnitOptionInfo.identifier,
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new StringInListVerifier({"m", "Km", "au", "pc", "Kpc", "Mpc", "Gpc", "Gly"}),
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Optional::Yes,
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FadeEndUnitOptionInfo.description,
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},
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{
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FadeStartDistInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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FadeStartDistInfo.description
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},
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{
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FadeEndDistInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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FadeEndDistInfo.description
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},
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{
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FadeStartSpeedInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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FadeStartSpeedInfo.description
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},
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{
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FadeEndSpeedInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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FadeEndSpeedInfo.description
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},
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}
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};
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}
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RenderableLabels::RenderableLabels(const ghoul::Dictionary& dictionary)
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: Renderable(dictionary)
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, _blendMode(BlendModeInfo, properties::OptionProperty::DisplayType::Dropdown)
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, _labelColor(
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LabelColorInfo,
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glm::vec4(1.f, 1.f, 1.f, 1.f),
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glm::vec4(0.f),
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glm::vec4(1.f)
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)
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, _labelSize(LabelSizeInfo, 8.f, 0.5f, 30.f)
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, _fontSize(FontSizeInfo, 50.f, 1.f, 100.f)
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, _labelMinSize(LabelMinSizeInfo, 8.f, 0.5f, 24.f)
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, _labelMaxSize(LabelMaxSizeInfo, 20.f, 0.5f, 100.f)
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, _pixelSizeControl(PixelSizeControlInfo, false)
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, _enableFadingEffect(EnableFadingEffectInfo, false)
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, _labelText(LabelTextInfo)
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, _fadeStartDistance(FadeStartDistInfo, 1.f, 0.f, 100.f)
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, _fadeEndDistance(FadeEndDistInfo, 1.f, 0.f, 100.f)
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, _fadeStartSpeed(FadeStartSpeedInfo, 1.f, 1.f, 100.f)
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, _fadeEndSpeed(FadeEndSpeedInfo, 1.f, 1.f, 100.f)
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, _labelOrientationOption(LabelOrientationOptionInfo, properties::OptionProperty::DisplayType::Dropdown)
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, _fadeStartUnitOption(FadeStartUnitOptionInfo, properties::OptionProperty::DisplayType::Dropdown)
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, _fadeEndUnitOption(FadeEndUnitOptionInfo, properties::OptionProperty::DisplayType::Dropdown)
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{
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documentation::testSpecificationAndThrow(
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Documentation(),
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dictionary,
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"RenderableLabels"
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);
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registerUpdateRenderBinFromOpacity();
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_blendMode.addOptions({
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{ BlendModeNormal, "Normal" },
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{ BlendModeAdditive, "Additive"}
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});
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_blendMode.onChange([&]() {
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switch (_blendMode) {
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case BlendModeNormal:
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setRenderBinFromOpacity();
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break;
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case BlendModeAdditive:
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setRenderBin(Renderable::RenderBin::Transparent);
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break;
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default:
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throw ghoul::MissingCaseException();
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}
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});
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if (dictionary.hasKey(BlendModeInfo.identifier)) {
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const std::string v = dictionary.value<std::string>(BlendModeInfo.identifier);
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if (v == "Normal") {
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_blendMode = BlendModeNormal;
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}
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else if (v == "Additive") {
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_blendMode = BlendModeAdditive;
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}
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}
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addProperty(_blendMode);
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_labelOrientationOption.addOption(ViewDirection, "Camera View Direction");
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_labelOrientationOption.addOption(NormalDirection, "Camera Position Normal");
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_labelOrientationOption = NormalDirection;
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if (dictionary.hasKeyAndValue<std::string>(LabelOrientationOptionInfo.identifier)) {
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const std::string o = dictionary.value<std::string>(LabelOrientationOptionInfo.identifier);
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if (o == "Camera View Direction") {
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_labelOrientationOption = ViewDirection;
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}
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else if (o == "Camera Position Normal") {
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_labelOrientationOption = NormalDirection;
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}
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}
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if (dictionary.hasKey(LabelTextInfo.identifier)) {
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_labelText = dictionary.value<std::string>(LabelTextInfo.identifier);
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}
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addProperty(_labelText);
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addProperty(_labelOrientationOption);
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_labelColor.setViewOption(properties::Property::ViewOptions::Color);
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if (dictionary.hasKey(LabelColorInfo.identifier)) {
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_labelColor = dictionary.value<glm::vec4>(LabelColorInfo.identifier);
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}
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addProperty(_labelColor);
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if (dictionary.hasKey(FontSizeInfo.identifier)) {
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_fontSize = dictionary.value<float>(FontSizeInfo.identifier);
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}
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_fontSize.onChange([&]() {
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_font = global::fontManager.font(
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"Mono",
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_fontSize,
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ghoul::fontrendering::FontManager::Outline::Yes,
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ghoul::fontrendering::FontManager::LoadGlyphs::No
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);
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});
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addProperty(_fontSize);
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if (dictionary.hasKey(LabelSizeInfo.identifier)) {
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_labelSize = dictionary.value<float>(LabelSizeInfo.identifier);
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}
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addProperty(_labelSize);
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if (dictionary.hasKey(LabelMinSizeInfo.identifier)) {
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_labelMinSize = dictionary.value<float>(LabelMinSizeInfo.identifier);
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}
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addProperty(_labelMinSize);
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if (dictionary.hasKey(LabelMaxSizeInfo.identifier)) {
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_labelMaxSize = dictionary.value<float>(LabelMaxSizeInfo.identifier);
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}
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addProperty(_labelMaxSize);
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if (dictionary.hasKey(TransformationMatrixInfo.identifier)) {
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_transformationMatrix = dictionary.value<glm::dmat4>(
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TransformationMatrixInfo.identifier
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);
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}
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if (dictionary.hasKey(PixelSizeControlInfo.identifier)) {
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_pixelSizeControl = dictionary.value<bool>(PixelSizeControlInfo.identifier);
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addProperty(_pixelSizeControl);
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}
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if (dictionary.hasKey(EnableFadingEffectInfo.identifier)) {
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_enableFadingEffect = dictionary.value<bool>(EnableFadingEffectInfo.identifier);
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}
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addProperty(_enableFadingEffect);
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if (dictionary.hasKey(FadeStartDistInfo.identifier)) {
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_fadeStartDistance = dictionary.value<float>(FadeStartDistInfo.identifier);
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}
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addProperty(_fadeStartDistance);
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_fadeStartUnitOption.addOption(Meter, MeterUnit);
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_fadeStartUnitOption.addOption(Kilometer, KilometerUnit);
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_fadeStartUnitOption.addOption(AU, AstronomicalUnit);
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_fadeStartUnitOption.addOption(Parsec, ParsecUnit);
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_fadeStartUnitOption.addOption(Kiloparsec, KiloparsecUnit);
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_fadeStartUnitOption.addOption(Megaparsec, MegaparsecUnit);
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_fadeStartUnitOption.addOption(Gigaparsec, GigaparsecUnit);
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_fadeStartUnitOption.addOption(GigalightYears, GigalightyearUnit);
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_fadeStartUnitOption = AU;
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if (dictionary.hasKey(FadeStartUnitOptionInfo.identifier)) {
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std::string unit = dictionary.value<std::string>(FadeStartUnitOptionInfo.identifier);
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if (unit == MeterUnit) {
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_fadeStartUnitOption = Meter;
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}
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else if (unit == KilometerUnit) {
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_fadeStartUnitOption = Kilometer;
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}
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else if (unit == AstronomicalUnit) {
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_fadeStartUnitOption = AU;
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}
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else if (unit == ParsecUnit) {
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_fadeStartUnitOption = Parsec;
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}
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else if (unit == KiloparsecUnit) {
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_fadeStartUnitOption = Kiloparsec;
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}
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else if (unit == MegaparsecUnit) {
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_fadeStartUnitOption = Megaparsec;
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}
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else if (unit == GigaparsecUnit) {
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_fadeStartUnitOption = Gigaparsec;
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}
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else if (unit == GigalightyearUnit) {
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_fadeStartUnitOption = GigalightYears;
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}
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else {
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LWARNING(
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"No unit given for RenderableLabels. Using kilometer as units."
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);
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_fadeStartUnitOption = Kilometer;
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}
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}
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addProperty(_fadeStartUnitOption);
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if (dictionary.hasKey(FadeStartSpeedInfo.identifier)) {
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_fadeStartSpeed = dictionary.value<float>(FadeStartSpeedInfo.identifier);
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}
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addProperty(_fadeStartSpeed);
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if (dictionary.hasKey(FadeEndDistInfo.identifier)) {
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_fadeEndDistance = dictionary.value<float>(FadeEndDistInfo.identifier);
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}
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addProperty(_fadeEndDistance);
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_fadeEndUnitOption.addOption(Meter, MeterUnit);
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_fadeEndUnitOption.addOption(Kilometer, KilometerUnit);
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_fadeEndUnitOption.addOption(AU, AstronomicalUnit);
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_fadeEndUnitOption.addOption(Parsec, ParsecUnit);
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_fadeEndUnitOption.addOption(Kiloparsec, KiloparsecUnit);
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_fadeEndUnitOption.addOption(Megaparsec, MegaparsecUnit);
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_fadeEndUnitOption.addOption(Gigaparsec, GigaparsecUnit);
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_fadeEndUnitOption.addOption(GigalightYears, GigalightyearUnit);
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_fadeEndUnitOption = AU;
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if (dictionary.hasKey(FadeEndUnitOptionInfo.identifier)) {
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std::string unit = dictionary.value<std::string>(FadeEndUnitOptionInfo.identifier);
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if (unit == MeterUnit) {
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_fadeEndUnitOption = Meter;
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}
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else if (unit == KilometerUnit) {
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_fadeEndUnitOption = Kilometer;
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}
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else if (unit == AstronomicalUnit) {
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_fadeEndUnitOption = AU;
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}
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else if (unit == ParsecUnit) {
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_fadeEndUnitOption = Parsec;
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}
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else if (unit == KiloparsecUnit) {
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_fadeEndUnitOption = Kiloparsec;
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}
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else if (unit == MegaparsecUnit) {
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_fadeEndUnitOption = Megaparsec;
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}
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else if (unit == GigaparsecUnit) {
|
|
_fadeEndUnitOption = Gigaparsec;
|
|
}
|
|
else if (unit == GigalightyearUnit) {
|
|
_fadeEndUnitOption = GigalightYears;
|
|
}
|
|
else {
|
|
LWARNING(
|
|
"No unit given for RenderableLabels. Using kilometer as units."
|
|
);
|
|
_fadeEndUnitOption = Kilometer;
|
|
}
|
|
}
|
|
|
|
addProperty(_fadeEndUnitOption);
|
|
|
|
if (dictionary.hasKey(FadeEndSpeedInfo.identifier)) {
|
|
_fadeEndSpeed = dictionary.value<float>(FadeEndSpeedInfo.identifier);
|
|
}
|
|
|
|
addProperty(_fadeEndSpeed);
|
|
|
|
|
|
//setBoundingSphere(_size);
|
|
}
|
|
|
|
bool RenderableLabels::isReady() const {
|
|
return true;
|
|
}
|
|
|
|
void RenderableLabels::initialize() {
|
|
bool success = true;// loadData();
|
|
if (!success) {
|
|
throw ghoul::RuntimeError("Error loading objects labels data.");
|
|
}
|
|
|
|
setRenderBin(Renderable::RenderBin::Transparent);
|
|
}
|
|
|
|
void RenderableLabels::initializeGL() {
|
|
if (_font == nullptr) {
|
|
//size_t _fontSize = 50;
|
|
_font = global::fontManager.font(
|
|
"Mono",
|
|
_fontSize,
|
|
ghoul::fontrendering::FontManager::Outline::Yes,
|
|
ghoul::fontrendering::FontManager::LoadGlyphs::No
|
|
);
|
|
}
|
|
}
|
|
|
|
void RenderableLabels::deinitializeGL() {
|
|
}
|
|
|
|
void RenderableLabels::render(const RenderData& data, RendererTasks&) {
|
|
|
|
//bool additiveBlending = (_blendMode == BlendModeAdditive);
|
|
//if (additiveBlending) {
|
|
glDepthMask(false);
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE);
|
|
//}
|
|
|
|
float fadeInVariable = 1.f;
|
|
|
|
if (_enableFadingEffect) {
|
|
float distanceNodeToCamera = glm::distance(
|
|
data.camera.positionVec3(),
|
|
data.modelTransform.translation
|
|
);
|
|
float sUnit = getUnit(_fadeStartUnitOption);
|
|
float eUnit = getUnit(_fadeEndUnitOption);
|
|
float startX = _fadeStartDistance * sUnit;
|
|
float endX = _fadeEndDistance * eUnit;
|
|
//fadeInVariable = changedPerlinSmoothStepFunc(distanceNodeToCamera, startX, endX);
|
|
fadeInVariable = linearSmoothStepFunc(distanceNodeToCamera, startX, endX, sUnit, eUnit);
|
|
}
|
|
|
|
glm::dmat4 modelMatrix(1.0);
|
|
glm::dmat4 modelViewMatrix = data.camera.combinedViewMatrix() * modelMatrix;
|
|
glm::dmat4 projectionMatrix = glm::dmat4(data.camera.projectionMatrix());
|
|
|
|
glm::dmat4 modelViewProjectionMatrix = projectionMatrix * modelViewMatrix;
|
|
|
|
glm::dvec3 cameraViewDirectionWorld = -data.camera.viewDirectionWorldSpace();
|
|
glm::dvec3 cameraUpDirectionWorld = data.camera.lookUpVectorWorldSpace();
|
|
glm::dvec3 orthoRight = glm::normalize(
|
|
glm::cross(cameraUpDirectionWorld, cameraViewDirectionWorld)
|
|
);
|
|
if (orthoRight == glm::dvec3(0.0)) {
|
|
glm::dvec3 otherVector(
|
|
cameraUpDirectionWorld.y,
|
|
cameraUpDirectionWorld.x,
|
|
cameraUpDirectionWorld.z
|
|
);
|
|
orthoRight = glm::normalize(glm::cross(otherVector, cameraViewDirectionWorld));
|
|
}
|
|
glm::dvec3 orthoUp = glm::normalize(glm::cross(cameraViewDirectionWorld, orthoRight));
|
|
|
|
renderLabels(data, modelViewProjectionMatrix, orthoRight, orthoUp, fadeInVariable);
|
|
|
|
//if (additiveBlending) {
|
|
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
|
|
glDepthMask(true);
|
|
//}
|
|
}
|
|
|
|
void RenderableLabels::update(const UpdateData&) {
|
|
}
|
|
|
|
void RenderableLabels::setLabelText(const std::string & newText) {
|
|
_labelText = newText;
|
|
}
|
|
|
|
void RenderableLabels::renderLabels(const RenderData& data,
|
|
const glm::dmat4& modelViewProjectionMatrix,
|
|
const glm::dvec3& orthoRight,
|
|
const glm::dvec3& orthoUp,
|
|
float fadeInVariable)
|
|
{
|
|
glm::vec4 textColor = _labelColor;
|
|
|
|
textColor.a *= fadeInVariable;
|
|
textColor.a *= _opacity;
|
|
|
|
ghoul::fontrendering::FontRenderer::ProjectedLabelsInformation labelInfo;
|
|
|
|
labelInfo.orthoRight = orthoRight;
|
|
labelInfo.orthoUp = orthoUp;
|
|
labelInfo.minSize = static_cast<int>(_labelMinSize);
|
|
labelInfo.maxSize = static_cast<int>(_labelMaxSize);
|
|
labelInfo.cameraPos = data.camera.positionVec3();
|
|
labelInfo.cameraLookUp = data.camera.lookUpVectorWorldSpace();
|
|
labelInfo.renderType = _labelOrientationOption;
|
|
labelInfo.mvpMatrix = modelViewProjectionMatrix;
|
|
labelInfo.scale = powf(10.f, _labelSize);
|
|
labelInfo.enableDepth = true;
|
|
labelInfo.enableFalseDepth = false;
|
|
|
|
// We don't use spice rotation and scale
|
|
glm::vec3 transformedPos(
|
|
_transformationMatrix * glm::dvec4(data.modelTransform.translation, 1.0)
|
|
);
|
|
|
|
ghoul::fontrendering::FontRenderer::defaultProjectionRenderer().render(
|
|
*_font,
|
|
transformedPos,
|
|
_labelText,
|
|
textColor,
|
|
labelInfo
|
|
);
|
|
}
|
|
|
|
float RenderableLabels::changedPerlinSmoothStepFunc(const float x,
|
|
const float startX,
|
|
const float endX) const
|
|
{
|
|
float f1 = 6.f * powf((x - startX), 5.f) - 15.f * powf((x - startX), 4.f) +
|
|
10.f * powf((x - startX), 3.f);
|
|
float f2 = -6.f * powf((x - endX), 5.f) + 15.f * powf((x - endX), 4.f) -
|
|
10.f * powf((x - endX), 3.f) + 1.f;
|
|
float f3 = 1.f;
|
|
|
|
if (x <= startX) {
|
|
return std::clamp(f1, 0.f, 1.f);
|
|
}
|
|
else if (x > startX && x < endX) {
|
|
return f3;
|
|
}
|
|
else if (x >= endX) {
|
|
return std::clamp(f2, 0.f, 1.f);
|
|
}
|
|
}
|
|
|
|
float RenderableLabels::linearSmoothStepFunc(const float x,
|
|
const float startX,
|
|
const float endX,
|
|
const float sUnit,
|
|
const float eUnit) const
|
|
{
|
|
float sdiv = 1.f / (sUnit * _fadeStartSpeed);
|
|
float ediv = -1.f / (eUnit * _fadeEndSpeed);
|
|
float f1 = sdiv * (x - startX) + 1.f;
|
|
float f2 = ediv * (x - endX) + 1.f;
|
|
float f3 = 1.f;
|
|
|
|
if (x <= startX) {
|
|
return std::clamp(f1, 0.f, 1.f);
|
|
}
|
|
else if (x > startX && x < endX) {
|
|
return f3;
|
|
}
|
|
else if (x >= endX) {
|
|
return std::clamp(f2, 0.f, 1.f);
|
|
}
|
|
}
|
|
|
|
float RenderableLabels::getUnit(int unit) const {
|
|
|
|
float scale = 0.f;
|
|
switch (static_cast<Unit>(unit)) {
|
|
case Meter:
|
|
scale = 1.f;
|
|
break;
|
|
case Kilometer:
|
|
scale = 1e3f;
|
|
break;
|
|
case AU:
|
|
scale = 149597870700.f;
|
|
break;
|
|
case Parsec:
|
|
scale = static_cast<float>(PARSEC);
|
|
break;
|
|
case Kiloparsec:
|
|
scale = static_cast<float>(1e3 * PARSEC);
|
|
break;
|
|
case Megaparsec:
|
|
scale = static_cast<float>(1e6 * PARSEC);
|
|
break;
|
|
case Gigaparsec:
|
|
scale = static_cast<float>(1e9 * PARSEC);
|
|
break;
|
|
case GigalightYears:
|
|
scale = static_cast<float>(306391534.73091 * PARSEC);
|
|
break;
|
|
}
|
|
|
|
return scale;
|
|
}
|
|
} // namespace openspace
|