wehub-resource-sync
62 lines
2.2 KiB
C#
62 lines
2.2 KiB
C#
using T3.Core.DataTypes.ShaderGraph;
|
|
using T3.Core.Utils;
|
|
|
|
namespace Lib.field.space;
|
|
|
|
[Guid("6ca6420a-4c05-4c33-81a3-1a9c4872e29d")]
|
|
internal sealed class RotateField : Instance<RotateField>
|
|
,IGraphNodeOp
|
|
{
|
|
[Output(Guid = "7c83325a-5aca-4bb0-865f-5de4d4908f26")]
|
|
public readonly Slot<ShaderGraphNode> Result = new();
|
|
|
|
public RotateField()
|
|
{
|
|
ShaderNode = new ShaderGraphNode(this, null, InputField);
|
|
|
|
ShaderNode.AdditionalParameters = [
|
|
new ShaderGraphNode.Parameter("float3", "RotateRad", Vector3.Zero),
|
|
];
|
|
|
|
Result.Value = ShaderNode;
|
|
Result.UpdateAction += Update;
|
|
}
|
|
|
|
private void Update(EvaluationContext context)
|
|
{
|
|
ShaderNode.AdditionalParameters[0].Value = Rotation.GetValue(context) * MathUtils.ToRad;
|
|
|
|
ShaderNode.Update(context);
|
|
ShaderNode.FlagCodeChanged();
|
|
}
|
|
|
|
public ShaderGraphNode ShaderNode { get; }
|
|
|
|
void IGraphNodeOp.AddDefinitions(CodeAssembleContext c)
|
|
{
|
|
c.Globals["pRotateXYZ"] = """
|
|
// Rotate around a coordinate axis (i.e. in a plane perpendicular to that axis) by angle <a>.
|
|
// Read like this: R(p.xz, a) rotates "x towards z".
|
|
// This is fast if <a> is a compile-time constant and slower (but still practical) if not.
|
|
void pRotateAxis(inout float2 p, float a) {
|
|
p = cos(a)*p + sin(a) * float2(p.y, -p.x);
|
|
}
|
|
""";
|
|
}
|
|
|
|
void IGraphNodeOp.GetPreShaderCode(CodeAssembleContext c, int inputIndex)
|
|
{
|
|
c.AppendCall($"""
|
|
pRotateAxis(p{c}.zy, {ShaderNode}RotateRad.x);
|
|
pRotateAxis(p{c}.zx, {ShaderNode}RotateRad.y);
|
|
pRotateAxis(p{c}.yx, {ShaderNode}RotateRad.z);
|
|
""");
|
|
}
|
|
|
|
[Input(Guid = "2e930b97-159d-4e29-ac28-1ff5c796820f")]
|
|
public readonly InputSlot<ShaderGraphNode> InputField = new();
|
|
|
|
[Input(Guid = "B9BC095A-084A-4616-A3AA-9616E82BA03B")]
|
|
public readonly InputSlot<Vector3> Rotation = new();
|
|
}
|