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added snap tool editor
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@alelievr
alelievr committed Nov 25, 2017
1 parent 9f963e5 commit 06f1730
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Showing 2 changed files with 101 additions and 61 deletions.
86 changes: 69 additions & 17 deletions ExamplesScenes/BasicHandles.unity
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76 changes: 32 additions & 44 deletions ExamplesScenes/Editor/SnapHandleEditor.cs
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Expand Up @@ -4,68 +4,66 @@
using UnityEditor;
using BetterHandles;

[CustomEditor(typeof(Transform), true)]
public class SnapHandleEditor : Editor
[InitializeOnLoad]
public class SnapHandleEditor
{
const float snapHandleDistance = 3.5f;
const float snapHandleSize = .15f;
const float defaultSnapUnit = .1f;
const float shiftSnapUnit = .5f;
const float commandSnapUnit = .05f;
static float snapHandleDistance = 3.5f;
static float snapHandleSize = .15f;
static float shiftSnapUnit = .1f;
static float commandSnapUnit = .25f;

Mesh snapToolMesh;
Transform transform;
Material handleMat;

Quaternion currentRotation;
Color currentColor;
static Mesh snapToolMesh;
static Transform transform;
static Material handleMat;

Editor defaultTransformEditor;
static Quaternion currentRotation;
static Color currentColor;

void OnEnable()
static SnapHandleEditor()
{
snapToolMesh = Resources.Load< Mesh >("snapToolHandle");
Debug.Log("target: " + target + ", type: " + target.GetType());
transform = target as Transform;
SceneView.onSceneGUIDelegate += OnSceneGUI;
}

void OnSceneGUI()
static void OnSceneGUI(SceneView sv)
{
// if (Tools.current != Tool.Move)
// return ;
if (Tools.current != Tool.Move)
return ;

if (Selection.activeGameObject == null)
return ;

transform = Selection.activeGameObject.transform;

//x axis
DrawAxisHandle(Quaternion.Euler(0, 0, 90), transform.right, Handles.xAxisColor, 0);
DrawAxisHandle(Quaternion.Euler(0, 0, 90), transform.right, Handles.xAxisColor);
//y axis
DrawAxisHandle(Quaternion.Euler(0, 0, 0), transform.up, Handles.yAxisColor, 1);
DrawAxisHandle(Quaternion.Euler(0, 0, 0), transform.up, Handles.yAxisColor);
//z axis
DrawAxisHandle(Quaternion.Euler(90, 0, 0), transform.forward, Handles.zAxisColor, 2);
DrawAxisHandle(Quaternion.Euler(90, 0, 0), transform.forward, Handles.zAxisColor);
}

void DrawAxisHandle(Quaternion rotation, Vector3 direction, Color color, int index)
static void DrawAxisHandle(Quaternion rotation, Vector3 direction, Color color)
{
var e = Event.current;

float snapUnit = (e.shift) ? shiftSnapUnit : (e.command) ? commandSnapUnit : defaultSnapUnit;
float snapUnit = 0;
float size = HandleUtility.GetHandleSize(transform.position) * snapHandleSize;
float dist = size * snapHandleDistance;

if (EditorGUI.actionKey)
snapUnit = (e.shift) ? shiftSnapUnit : commandSnapUnit;

currentRotation = rotation;
currentColor = color;

Vector3 addPos = direction * dist;
Vector3 newPosition = Handles.Slider(transform.position + addPos, direction, size, SnapHandleCap, 0) - addPos;

if (newPosition != transform.position)
{
//handmade snapping selected axis
newPosition[index] = Mathf.Round(newPosition[index] / snapUnit) * snapUnit;
Vector3 newPosition = Handles.Slider(transform.position + addPos, direction, size, SnapHandleCap, snapUnit) - addPos;

transform.position = newPosition;
}
transform.position = newPosition;
}

void SnapHandleCap(int controlId, Vector3 position, Quaternion rotation, float size, EventType eventType)
static void SnapHandleCap(int controlId, Vector3 position, Quaternion rotation, float size, EventType eventType)
{
if (eventType == EventType.Repaint)
{
Expand All @@ -84,14 +82,4 @@ void SnapHandleCap(int controlId, Vector3 position, Quaternion rotation, float s
HandleUtility.AddControl(controlId, distance);
}
}

public override void OnInspectorGUI()
{
if (defaultTransformEditor == null)
defaultTransformEditor = Editor.CreateEditor(transform);

Debug.Log("deafultTransformEditor: " + defaultTransformEditor);
if (defaultTransformEditor.GetType() != typeof(SnapHandleEditor))
defaultTransformEditor.OnInspectorGUI();
}
}

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