wehub-resource-sync
70 lines
2.5 KiB
C#
70 lines
2.5 KiB
C#
using T3.Core.DataTypes.ShaderGraph;
|
|
|
|
namespace Lib.field.generate.sdf;
|
|
|
|
[Guid("860da1cd-b341-4bc5-965a-4a9c295831f4")]
|
|
internal sealed class BoxSDF : Instance<BoxSDF>, ITransformable
|
|
,IGraphNodeOp
|
|
{
|
|
[Output(Guid = "9153c53c-0b19-4ce4-b086-e448d78ef032")]
|
|
public readonly Slot<ShaderGraphNode> Result = new();
|
|
|
|
IInputSlot ITransformable.TranslationInput => Center;
|
|
IInputSlot ITransformable.RotationInput => null;
|
|
IInputSlot ITransformable.ScaleInput => Size;
|
|
public Action<Instance, EvaluationContext> TransformCallback { get; set; }
|
|
|
|
public BoxSDF()
|
|
{
|
|
ShaderNode = new ShaderGraphNode(this);
|
|
|
|
ShaderNode.AdditionalParameters = [
|
|
new ShaderGraphNode.Parameter("float3", "CombinedScale", Vector3.One),
|
|
];
|
|
|
|
Result.Value = ShaderNode;
|
|
Result.UpdateAction += Update;
|
|
}
|
|
|
|
private void Update(EvaluationContext context)
|
|
{
|
|
var combinedScale = Size.GetValue(context) * UniformScale.GetValue(context) /2;
|
|
ShaderNode.AdditionalParameters[0].Value = combinedScale;
|
|
|
|
TransformCallback?.Invoke(this, context);
|
|
ShaderNode.Update(context);
|
|
}
|
|
|
|
public ShaderGraphNode ShaderNode { get; }
|
|
|
|
|
|
void IGraphNodeOp.AddDefinitions(CodeAssembleContext c)
|
|
{
|
|
c.Globals["fRoundedRect"] = """
|
|
float fRoundedRect(float3 p, float3 center, float3 size, float r) {
|
|
float3 q = abs(p- center) - size + r;
|
|
return length(max(q,0.0)) + min(max(q.x,max(q.y,q.z)),0.0) - r;
|
|
}
|
|
""";
|
|
}
|
|
|
|
public void GetPreShaderCode(CodeAssembleContext c, int inputIndex)
|
|
{
|
|
c.AppendCall($"f{c}.w = fRoundedRect(p{c}.xyz, {ShaderNode}Center, {ShaderNode}CombinedScale, {ShaderNode}EdgeRadius);");
|
|
c.AppendCall($"f{c}.xyz = p.w < 0.5 ? p{c}.xyz : 1;"); // save local space
|
|
}
|
|
|
|
[GraphParam]
|
|
[Input(Guid = "951b2983-1359-41e4-8fb0-8d97c50ed8d6")]
|
|
public readonly InputSlot<Vector3> Center = new();
|
|
|
|
[Input(Guid = "C4EF07B4-853B-48D4-9ADE-C93EE849071A")]
|
|
public readonly InputSlot<Vector3> Size = new();
|
|
|
|
[Input(Guid = "734179fa-aaf8-46d0-b827-e71555dad6a0")]
|
|
public readonly InputSlot<float> UniformScale = new();
|
|
|
|
[GraphParam]
|
|
[Input(Guid = "787e5d70-0aba-400f-8616-6ece6c5895bc")]
|
|
public readonly InputSlot<float> EdgeRadius = new();
|
|
} |