86 lines
2.6 KiB
C#
86 lines
2.6 KiB
C#
// Copyright (c) Microsoft Corporation.
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// Licensed under the MIT License.
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using System;
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using UnityEngine;
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namespace Microsoft.MixedReality.Toolkit.Utilities
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{
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/// <summary>
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/// Component to animate and visualize a sphere that can be used with
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/// per pixel based clipping.
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/// </summary>
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[ExecuteInEditMode]
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[AddComponentMenu("Scripts/MRTK/Core/ClippingSphere")]
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public class ClippingSphere : ClippingPrimitive
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{
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/// <summary>
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/// The radius of the clipping sphere, determined by the largest axis of the transform's scale.
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/// </summary>
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[Obsolete("Use Radii instead as ellipsoids are supported. ")]
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public float Radius
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{
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get
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{
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Vector3 radii = Radii;
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return Mathf.Max(radii.x, radii.y, radii.z);
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}
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}
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/// <summary>
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/// The radius of the clipping sphere on each axis, determined by the transform's scale.
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/// </summary>
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public Vector3 Radii => transform.lossyScale * 0.5f;
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/// <summary>
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/// The property name of the clip sphere data within the shader.
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/// </summary>
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protected int clipSphereInverseTransformID;
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private Matrix4x4 clipSphereInverseTransform;
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/// <inheritdoc />
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protected override string Keyword
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{
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get { return "_CLIPPING_SPHERE"; }
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}
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/// <inheritdoc />
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protected override string ClippingSideProperty
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{
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get { return "_ClipSphereSide"; }
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}
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/// <summary>
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/// Renders a visual representation of the clipping primitive when selected.
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/// </summary>
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protected void OnDrawGizmosSelected()
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{
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if (enabled)
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{
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Gizmos.matrix = transform.localToWorldMatrix;
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Gizmos.DrawWireSphere(Vector3.zero, 0.5f);
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}
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}
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/// <inheritdoc />
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protected override void Initialize()
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{
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base.Initialize();
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clipSphereInverseTransformID = Shader.PropertyToID("_ClipSphereInverseTransform");
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}
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protected override void BeginUpdateShaderProperties()
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{
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clipSphereInverseTransform = transform.worldToLocalMatrix;
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base.BeginUpdateShaderProperties();
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}
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/// <inheritdoc />
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protected override void UpdateShaderProperties(MaterialPropertyBlock materialPropertyBlock)
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{
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materialPropertyBlock.SetMatrix(clipSphereInverseTransformID, clipSphereInverseTransform);
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}
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}
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}
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