wehub-resource-sync
67 lines
2.4 KiB
C#
67 lines
2.4 KiB
C#
using T3.Core.DataTypes.ShaderGraph;
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namespace Lib.field.generate.sdf;
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[Guid("752e4358-05e0-4651-a147-f141138f5244")]
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internal sealed class CapsuleLineSDF : Instance<CapsuleLineSDF>
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, IGraphNodeOp, ITransformable
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{
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[Output(Guid = "1d6a73c3-1a6a-452a-a4a2-ddee308aa0ae")]
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public readonly Slot<ShaderGraphNode> Result = new();
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// ITransformable interface implementation (Gizmo support)
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IInputSlot ITransformable.TranslationInput => EndPoint;
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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 CapsuleLineSDF()
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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); // Needed for Gizmo support
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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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c.Globals["fCapsule"] = """
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float fCapsule(float3 p, float3 a, float3 b, float r) {
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float3 pa = p - a;
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float3 ba = b - a;
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float h = clamp( dot(pa,ba)/dot(ba,ba), 0.0, 1.0 );
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return length( pa - ba*h ) - r;
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}
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""";
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c.AppendCall($"f{c}.w = fCapsule(p{c} - {ShaderNode}Center, {ShaderNode}StartingPoint, {ShaderNode}EndPoint, {ShaderNode}Thickness);");
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c.AppendCall($"f{c}.xyz = p.w < 0.5 ? p{c}.xyz : 1;"); // save local space
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}
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public void GetPostShaderCode(CodeAssembleContext c, int inputIndex)
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{
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}
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[GraphParam]
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[Input(Guid = "50A47EA6-A941-4FF4-9B87-14DDD2791FE4")]
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public readonly InputSlot<Vector3> Center = new();
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[GraphParam]
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[Input(Guid = "ace2fa64-382c-4386-b623-5b1051f4bcf4")]
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public readonly InputSlot<Vector3> StartingPoint = new();
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[GraphParam]
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[Input(Guid = "0B4FDE07-5439-4DBD-AF37-32E5C6DC9315")]
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public readonly InputSlot<Vector3> EndPoint = new();
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[GraphParam]
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[Input(Guid = "808C44FF-44E2-4A22-91F1-F459F298E6EB")]
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public readonly InputSlot<float> Thickness = new();
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} |