91 lines
3.5 KiB
C#
91 lines
3.5 KiB
C#
using System.Collections.Generic;
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using UnityEngine;
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namespace UnityEditor.VFX.Block
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{
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class KillSphereDeprecatedV2 : VFXBlock
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{
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[VFXSetting]
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[Tooltip("Specifies the mode by which particles are killed off. ‘Solid’ affects only particles within the specified volume, while ‘Inverted’ affects only particles outside of the volume.")]
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public CollisionBase.Mode mode = CollisionBase.Mode.Solid;
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public override string name { get { return "Kill (Sphere)"; } }
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public override VFXContextType compatibleContexts { get { return VFXContextType.InitAndUpdateAndOutput; } }
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public override VFXDataType compatibleData { get { return VFXDataType.Particle; } }
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public override void Sanitize(int version)
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{
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var newKillSphereShape = ScriptableObject.CreateInstance<CollisionShape>();
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newKillSphereShape.SetSettingValue("behavior", CollisionBase.Behavior.Kill);
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SanitizeHelper.MigrateBlockCollisionShapeToComposed(newKillSphereShape, this, CollisionShapeBase.Type.Sphere);
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ReplaceModel(newKillSphereShape, this);
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}
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public override IEnumerable<VFXAttributeInfo> attributes
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{
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get
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{
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yield return new VFXAttributeInfo(VFXAttribute.Position, VFXAttributeMode.Read);
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yield return new VFXAttributeInfo(VFXAttribute.Alive, VFXAttributeMode.Write);
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}
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}
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public class InputProperties
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{
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[Tooltip("Sets the sphere used to determine the kill volume.")]
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public TSphere sphere = TSphere.defaultValue;
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}
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public override IEnumerable<VFXNamedExpression> parameters
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{
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get
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{
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VFXExpression transform = null;
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VFXExpression radius = null;
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foreach (var param in GetExpressionsFromSlots(this))
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{
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if (param.name.StartsWith("sphere"))
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{
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if (param.name == "sphere_" + nameof(TSphere.transform))
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transform = param.exp;
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if (param.name == "sphere_" + nameof(TSphere.radius))
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radius = param.exp;
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continue; //exclude all sphere automatic inputs
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}
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yield return param;
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}
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//Integrate directly the radius into the common transform matrix
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var radiusScale = VFXOperatorUtility.UniformScaleMatrix(radius);
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var finalTransform = new VFXExpressionTransformMatrix(transform, radiusScale);
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yield return new VFXNamedExpression(new VFXExpressionInverseTRSMatrix(finalTransform), "invFieldTransform");
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var isZeroScaled = VFXOperatorUtility.IsTRSMatrixZeroScaled(finalTransform);
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yield return new VFXNamedExpression(isZeroScaled, "isZeroScaled");
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if (mode == CollisionBase.Mode.Solid)
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yield return new VFXNamedExpression(VFXValue.Constant(1.0f), "colliderSign");
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else
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yield return new VFXNamedExpression(VFXValue.Constant(-1.0f), "colliderSign");
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}
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}
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public override string source
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{
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get
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{
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return @"
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if (isZeroScaled)
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return;
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float3 tPos = mul(invFieldTransform, float4(position, 1.0f)).xyz;
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float sqrLength = dot(tPos, tPos);
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if (colliderSign * sqrLength <= colliderSign)
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alive = false;";
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}
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}
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}
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}
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