wehub-resource-sync
52 lines
1.4 KiB
C#
52 lines
1.4 KiB
C#
using T3.Core.DataTypes.ShaderGraph;
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namespace Lib.field.generate.sdf;
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[Guid("fc2a33fc-d957-4113-8096-92d4dcbe14b5")]
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internal sealed class SphereSDF : Instance<SphereSDF>, ITransformable
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, IGraphNodeOp
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{
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[Output(Guid = "02f7d494-72ed-4247-88d7-0cbb730edf65")]
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public readonly Slot<ShaderGraphNode> Result = new();
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IInputSlot ITransformable.TranslationInput => Center;
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IInputSlot ITransformable.RotationInput => null;
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IInputSlot ITransformable.ScaleInput => null;
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public Action<Instance, EvaluationContext> TransformCallback { get; set; }
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public SphereSDF()
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{
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ShaderNode = new ShaderGraphNode(this);
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Result.Value = ShaderNode;
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Result.UpdateAction += Update;
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}
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private void Update(EvaluationContext context)
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{
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TransformCallback?.Invoke(this, context);
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ShaderNode.Update(context);
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}
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public ShaderGraphNode ShaderNode { get; }
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public void GetPreShaderCode(CodeAssembleContext c, int inputIndex)
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{
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var n = ShaderNode;
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c.AppendCall($"f{c}.w = length(p{c}.xyz - {n}Center) - {n}Radius;");
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c.AppendCall($"f{c}.xyz = p.w < 0.5 ? p{c}.xyz : 1;"); // save local space
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}
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[GraphParam]
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[Input(Guid = "CA582E39-37D7-4DF6-B942-E2330F2BF2C6")]
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public readonly InputSlot<Vector3> Center = new();
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[GraphParam]
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[Input(Guid = "3DD7C779-7982-4E7C-B4CE-F1915F477AD0")]
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public readonly InputSlot<float> Radius = new();
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}
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