FoliageChunk

Remarks

What the instancing feature draws as one object. The bounds are maintained as instances arrive and are recomputed when one leaves, because a cull is only as good as the box it tests — and a cell whose bounds never shrank would keep a whole forest's worth of extent after an artist erased all but one tree.

⚠ One chunk per type per cell, not one per cell. A cell holding three kinds of tree is three batches, because a batch is one mesh — folding them together would mean a draw that has to switch mesh mid-instance, which is not a thing.

Fields and properties (6)

• public FoliageCellKey Cell

  Which cell it is in.

• public int Type

  Which type's instances it holds.

• public IReadOnlyList<FoliageInstance> Instances

  The instances.

• public int Count

  How many there are.

• public bool IsEmpty

  Whether there are none.

• public BoundingBox Bounds

  Where they are, as one box.

Methods (6)

• public FoliageChunk(FoliageCellKey cell, int type)

  Creates an empty chunk.

• public void Add(in FoliageInstance instance, float reach = 1)

  Adds an instance.

• public void RemoveAt(int index, float reach = 1)

  Removes the instance at an index.

• public int RemoveAll(Predicate<FoliageInstance> accept, float reach = 1)

  Removes every instance a predicate accepts.

• public void Replace(int index, in FoliageInstance instance, float reach = 1)

  Replaces the instance at an index.

• public void Clear()

  Empties it.

Used by (12)

• FoliageBlockerTestsVixen.Rendering.Terrain.Tests
• FoliageCullPassVixen.Rendering.Terrain
• FoliageGrowthTestsVixen.Foliage.Tests
• FoliageRendererVixen.Rendering.Terrain
• FoliageScatterTestsVixen.Foliage.Tests
• FoliageStoreVixen.Foliage
• FoliageStreamerVixen.Rendering.Terrain
• FoliageVolumeVixen.Foliage
• FoliageVolumeTestsVixen.Foliage.Tests
• PaletteRemovalTestsVixen.Foliage.Tests
• FoliageModeTestsVixen.Editor.Terrain.Tests
• FoliageStrokeCommandVixen.Editor.Terrain