Luis Gonzalez
80 lines
2.3 KiB
C#
80 lines
2.3 KiB
C#
using System;
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using Unity.Collections;
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using Unity.Entities;
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using Unity.Mathematics;
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using Unity.Rendering;
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/////////////////////////////////////////////////////////////////////////////////
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namespace Rukhanka
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{
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public struct AnimationCullingContext: IComponentData, IDisposable
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{
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public NativeList<float4> cullingPlanes;
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public NativeList<int2> cullingVolumePlaneRanges;
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public NativeList<LODGroupExtensions.LODParams> lodAffectors;
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#if RUKHANKA_DEBUG_INFO
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public bool drawCullingVolumes;
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public uint cullingVolumeColor;
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public bool drawSceneBoundingBoxes;
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public uint visibleChunkColor;
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public uint invisibleChunkColor;
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public uint visibleRendererColor;
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public uint invisibleRendererColor;
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#endif
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public void Dispose()
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{
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cullingPlanes.Dispose();
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cullingVolumePlaneRanges.Dispose();
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lodAffectors.Dispose();
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}
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/////////////////////////////////////////////////////////////////////////////////
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internal void AddCullingPlanes(NativeArray<float4> planes)
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{
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if (planes.Length == 0)
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return;
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var volumePlaneRanges = new int2(cullingPlanes.Length, planes.Length);
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cullingVolumePlaneRanges.Add(volumePlaneRanges);
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cullingPlanes.AddRange(planes);
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}
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/////////////////////////////////////////////////////////////////////////////////
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internal void AddLODAffector(AnimationCullingContextUpdateSystem.CullingCameraData ccd, float lodBias)
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{
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var lp = new LODGroupExtensions.LODParams()
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{
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cameraPos = ccd.pos,
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orthosize = ccd.orthographicSize,
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distanceScale = CalculateDistanceScale(ccd.fieldOfView, lodBias, ccd.isOrthographic, ccd.orthographicSize),
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isOrtho = ccd.isOrthographic
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};
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lodAffectors.Add(lp);
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}
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/////////////////////////////////////////////////////////////////////////////////
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float CalculateDistanceScale(float fov, float globalLodBias, bool isOrtho, float orthoSize)
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{
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float rv;
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if (isOrtho)
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{
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rv = 2.0f * orthoSize / globalLodBias;
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}
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else
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{
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var halfAngle = math.tan(math.radians(fov * 0.5f));
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rv = 2.0f * halfAngle / globalLodBias;
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}
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return rv;
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}
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}
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}
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