47 lines
1.6 KiB
C#
47 lines
1.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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using UnityEngine.VFX;
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namespace UnityEditor.VFX
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{
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enum VFXPrimitiveType
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{
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Triangle,
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Quad,
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Octagon,
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}
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static class VFXPlanarPrimitiveHelper
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{
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public class OctagonInputProperties
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{
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[Range(0, 1), Tooltip("Sets the amount by which the octagonal particle shape is cropped, allowing for a tighter fit and reducing potential overdraw by eliminating transparent pixels.")]
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public float cropFactor = (int)(0.5f * (1.0f - Mathf.Tan(Mathf.PI / 8.0f)) * 1000.0f + 0.5f) / 1000.0f; // regular octagon with 3 decimals
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}
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public static VFXTaskType GetTaskType(VFXPrimitiveType prim)
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{
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switch (prim)
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{
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case VFXPrimitiveType.Triangle: return VFXTaskType.ParticleTriangleOutput;
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case VFXPrimitiveType.Quad: return VFXTaskType.ParticleQuadOutput;
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case VFXPrimitiveType.Octagon: return VFXTaskType.ParticleOctagonOutput;
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default: throw new NotImplementedException();
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}
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}
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public static string GetShaderDefine(VFXPrimitiveType prim)
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{
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switch (prim)
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{
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case VFXPrimitiveType.Triangle: return "VFX_PRIMITIVE_TRIANGLE";
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case VFXPrimitiveType.Quad: return "VFX_PRIMITIVE_QUAD";
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case VFXPrimitiveType.Octagon: return "VFX_PRIMITIVE_OCTAGON";
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default: throw new NotImplementedException();
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}
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}
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}
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}
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