Version: 2021.3
LanguageEnglish
  • C#

SceneView.AddCameraMode

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Declaration

public static SceneView.CameraMode AddCameraMode(string name, string section);

Parameters

name The name for the new mode.
section The section in which the new mode will be added. This can be an existing or new section.

Returns

CameraMode A CameraMode with the provided name and section.

Description

Add a custom camera mode to the Scene view camera mode list.

When a user-defined mode is selected, the Scene view will render as though the "shaded" mode is selected.

using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

// Using a ScriptableSingleton lets us initialize and cleanup any managed resources with OnEnable and OnDisable. class CustomCameraMode : ScriptableSingleton<CustomCameraMode> { // Initialize an instance of this class when the editor loads. [InitializeOnLoadMethod] static void Init() => _ = instance;

const string k_Name = "Positions as Colors"; const string k_Section = "Miscellaneous"; Shader m_ReplacementShader; Dictionary<SceneView, bool> m_Active = new Dictionary<SceneView, bool>();

void OnEnable() { // Make sure to only call AddCameraMode once. This adds the camera mode to all existing and future SceneViews. SceneView.AddCameraMode(k_Name, k_Section);

// Custom modes are implemented through replacement shaders. We set the replacement shader during repaint events // in the OnSceneGUI callback. SceneView.duringSceneGui += OnSceneGUI;

// Create a shader in your project with code below this example. m_ReplacementShader = Shader.Find("Unlit/PositionAsColor"); }

// If any managed resources are created in OnEnable, they should be cleaned up in OnDisable. void OnDisable() { SceneView.duringSceneGui -= OnSceneGUI; }

void OnSceneGUI(SceneView view) { if (Event.current.type != EventType.Repaint) return;

// When the active camera mode changes, we need to update the replacement shader. The replacement shader and // tag are serialized for each scene view, and do not need to be re-applied every frame or after domain reloads. // Alternatively, you can make use of the `SceneView.onCameraModeChanged` event to update the replacement shader. if(!m_Active.TryGetValue(view, out var wasActive)) m_Active[view] = wasActive = false;

var isActive = view.cameraMode.drawMode == DrawCameraMode.UserDefined && view.cameraMode.name == k_Name && view.cameraMode.section== k_Section;

if (wasActive == isActive) return;

m_Active[view] = isActive;

if(isActive) view.SetSceneViewShaderReplace(m_ReplacementShader, string.Empty); else view.SetSceneViewShaderReplace(null, null); } }

The source code for the shader used in the sample above is an example.

          Shader "Unlit/PositionAsColor"
{
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 100

Pass { CGPROGRAM #pragma vertex vert #pragma fragment frag

#include "UnityCG.cginc"

struct appdata { float4 vertex : POSITION; };

struct v2f { float4 vertex : SV_POSITION; float4 color : COLOR; };

v2f vert (appdata v) { v2f o; o.vertex = UnityObjectToClipPos(v.vertex); o.color = float4((normalize(v.vertex.xyz)+1)*.5, 1); return o; }

fixed4 frag (v2f i) : SV_Target { return i.color; } ENDCG } } }