sceneconverter: show names of custom animation track targers in --info.

src/Magnum/SceneTools/Implementation/sceneConverterUtilities.h

@@ -69,6 +69,7 @@ template<class T> Containers::String calculateBounds(Containers::Array<T>&& attr
 bool printInfo(const Debug::Flags useColor, const bool useColor24, const Utility::Arguments& args, Trade::AbstractImporter& importer, std::chrono::high_resolution_clock::duration& importTime) {
     struct AnimationTrackInfo {
         Trade::AnimationTrackTarget targetName;
+        Containers::String customTargetName;
         Trade::AnimationTrackType type, resultType;
         Animation::Interpolation interpolation;
         Animation::Extrapolation before, after;
@@ -303,8 +304,11 @@ bool printInfo(const Debug::Flags useColor, const bool useColor24, const Utility
         info.duration = animation->duration();
 
         for(UnsignedInt j = 0; j != animation->trackCount(); ++j) {
+            const Trade::AnimationTrackTarget name = animation->trackTargetName(j);
             arrayAppend(info.tracks, InPlaceInit,
-                animation->trackTargetName(j),
+                name,
+                Trade::isAnimationTrackTargetCustom(name) ?
+                    importer.animationTrackTargetName(name) : "",
                 animation->trackType(j),
                 animation->trackResultType(j),
                 animation->track(j).interpolation(),
@@ -707,10 +711,19 @@ bool printInfo(const Debug::Flags useColor, const bool useColor24, const Utility
             const AnimationTrackInfo& track = info.tracks[i];
 
             d << Debug::newline << "  Track" << i << Debug::nospace << ":"
-                << Debug::packed << Debug::boldColor(Debug::Color::Default)
-                << track.targetName << Debug::color(Debug::Color::Blue) << "@"
-                << Debug::packed << Debug::color(Debug::Color::Cyan)
-                << track.type << Debug::resetColor;
+                << Debug::boldColor(Debug::Color::Default);
+            if(Trade::isAnimationTrackTargetCustom(track.targetName)) {
+                d << "Custom(" << Debug::nospace
+                    << Trade::animationTrackTargetCustom(track.targetName)
+                    << Debug::nospace << ":" << Debug::nospace
+                    << Debug::color(Debug::Color::Yellow)
+                    << track.customTargetName << Debug::nospace
+                    << Debug::boldColor(Debug::Color::Default) << ")";
+            } else d << Debug::packed << track.targetName;
+
+            d << Debug::color(Debug::Color::Blue) << "@" << Debug::packed
+                << Debug::color(Debug::Color::Cyan) << track.type
+                << Debug::resetColor;
             if(track.type != track.resultType)
                 d << Debug::color(Debug::Color::Blue) << "->"
                     << Debug::packed << Debug::color(Debug::Color::Cyan)

src/Magnum/SceneTools/Test/SceneConverterImplementationTest.cpp

@@ -309,15 +309,17 @@ void SceneConverterImplementationTest::infoAnimations() {
         }
         Containers::Optional<Trade::AnimationData> doAnimation(UnsignedInt id) override {
             /* First has two tracks with a shared time and implicit duration,
-               one with a different result type. */
+               one with a different result type, one with a custom target. */
             if(id == 0) {
                 Containers::ArrayView<Float> time;
                 Containers::ArrayView<Vector2> translation;
                 Containers::ArrayView<CubicHermite2D> rotation;
+                Containers::ArrayView<bool> visibility;
                 Containers::ArrayTuple data{
                     {ValueInit, 3, time},
                     {ValueInit, 3, translation},
-                    {ValueInit, 3, rotation}
+                    {ValueInit, 3, rotation},
+                    {ValueInit, 3, visibility},
                 };
                 Utility::copy({0.5f, 1.0f, 1.25f}, time);
                 return Trade::AnimationData{std::move(data), {
@@ -325,6 +327,7 @@ void SceneConverterImplementationTest::infoAnimations() {
                         constructors */
                     Trade::AnimationTrackData{Trade::AnimationTrackTarget::Translation2D, 17, Animation::TrackView<const Float, const Vector2>{time, translation, Animation::Interpolation::Linear, Animation::Extrapolation::DefaultConstructed, Animation::Extrapolation::Constant}},
                     Trade::AnimationTrackData{Trade::AnimationTrackTarget::Rotation2D, 17, Animation::TrackView<const Float, const CubicHermite2D>{time, rotation, Animation::Interpolation::Constant, Animation::Extrapolation::Extrapolated}},
+                    Trade::AnimationTrackData{Trade::animationTrackTargetCustom(333), 666, Animation::TrackView<const Float, const bool>{time, visibility, Animation::Interpolation::Constant, Animation::Extrapolation::Constant}},
                 }};
             }
 
@@ -341,6 +344,12 @@ void SceneConverterImplementationTest::infoAnimations() {
             CORRADE_INTERNAL_ASSERT_UNREACHABLE();
         }
 
+        Containers::String doAnimationTrackTargetName(UnsignedShort name) override {
+            if(name == 333)
+                return "visibility";
+            return {};
+        }
+
         struct {
             Float time[5];
             Vector3 scaling[5];

src/Magnum/SceneTools/Test/SceneConverterImplementationTestFiles/info-animations.txt

@@ -4,6 +4,8 @@ Animation 0:
     Interpolation: Linear, DefaultConstructed, Constant
   Track 1: Rotation2D @ CubicHermite2D -> Vector2, 3 keyframes
     Interpolation: Constant, Extrapolated, Extrapolated
+  Track 2: Custom(333:visibility) @ Bool, 3 keyframes
+    Interpolation: Constant, Constant, Constant
 Animation 1: Custom track duration and interpolator function
   Duration: {0.1, 1.3} (0.1 kB, ExternallyOwned)
   Track 0: Scaling3D @ Vector3, 5 keyframes