wehub-resource-sync
44 lines
1.6 KiB
C#
44 lines
1.6 KiB
C#
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namespace Lib.render.camera;
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[Guid("2ed26fb7-fe66-4ed6-8b8d-230d87ae5c77")]
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internal sealed class CamPosition : Instance<CamPosition>
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{
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[Output(Guid = "51BEC9E0-2E6E-49B6-885C-2AA0F3AC37E3", DirtyFlagTrigger = DirtyFlagTrigger.Animated)]
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public readonly Slot<Command> Command = new();
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[Output(Guid = "20E33049-C2FA-4C9F-8607-318B279B72EC", DirtyFlagTrigger = DirtyFlagTrigger.Animated)]
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public readonly Slot<Vector3> Position = new();
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[Output(Guid = "5A38F00B-342A-46E5-9410-FBF403F2313E", DirtyFlagTrigger = DirtyFlagTrigger.Animated)]
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public readonly Slot<Vector3> Direction = new();
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[Output(Guid = "A2213E94-0FE5-4CA6-A13D-9A265D50E707", DirtyFlagTrigger = DirtyFlagTrigger.Animated)]
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public readonly Slot<float> AspectRatio = new();
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public CamPosition()
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{
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Command.UpdateAction += Update;
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// Note: We only want to call update for the execution path.
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}
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private void Update(EvaluationContext context)
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{
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Matrix4x4.Invert(context.WorldToCamera, out var camToWorld);
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var pos = Vector4.Transform(new Vector4(0f, 0f, 0f, 1f), camToWorld);
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Position.Value = new Vector3(pos.X, pos.Y, pos.Z);
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var dir = pos -Vector4.Transform(new Vector4(0f, 0f, 1f, 1f), camToWorld);
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Direction.Value = new Vector3(dir.X, dir.Y, dir.Z);
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float aspect = context.CameraToClipSpace.M22 / context.CameraToClipSpace.M11;
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AspectRatio.Value = aspect;
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Position.DirtyFlag.Clear();
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Direction.DirtyFlag.Clear();
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AspectRatio.DirtyFlag.Clear();
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}
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} |