public static float LineSlider(int controlID, Vector2 center, float distance, float angle,
float handleScale = 1f, bool alwaysVisible = false, bool arrow = false)
{
var hoverState = StateObject.Get <HoverState>(controlID);
var direction = Helpers2D.GetDirection(angle);
var wantedPosition = center + direction * distance;
var handleSize = HandleUtility.GetHandleSize(wantedPosition) * handleScale;
var normal = Helpers2D.GetPerpendicularVector(direction) *
handleSize;
EditorGUI.BeginChangeCheck();
wantedPosition = Handles.Slider2D(controlID,
wantedPosition,
Vector3.forward,
Vector3.up,
Vector3.right,
normal.magnitude * 2,
(id, position, rotation, size) => { },
Vector2.zero);
if (EditorGUI.EndChangeCheck())
{
distance = Helpers2D.DistanceAlongLine(new Ray(center, direction), wantedPosition);
}
var current = Event.current;
float drawScale = 1;
switch (current.GetTypeForControl(controlID))
{
case EventType.mouseMove:
var hovering = HandleUtility.nearestControl == controlID;
if (hoverState.hovering != hovering)
{
current.Use();
hoverState.hovering = hovering;
}
break;
case EventType.repaint:
var handleColor = Handles.color;
if (GUIUtility.hotControl == controlID || hoverState.hovering)
{
if (GUIUtility.hotControl == controlID)
{
handleColor = Color.red;
}
else
{
handleColor = Color.yellow;
}
var cursor = RotatedResizeCursor(direction);
SetEditorCursor(cursor, controlID);
drawScale = 2;
}
else if (GUIUtility.hotControl != 0)
{
handleColor.a *= 0.5f;
}
var drawNormal = normal * drawScale;
using (new HandleColor(handleColor)) {
Vector3 a = wantedPosition - drawNormal;
Vector3 b = wantedPosition + drawNormal;
if (GUIUtility.hotControl == controlID)
{
var cameraVectorA = HandleToScreenPoint(a);
var cameraVectorB = HandleToScreenPoint(b);
cameraVectorA.z -= 0.01f;
cameraVectorB.z -= 0.01f;
a = ScreenToHandlePoint(cameraVectorA);
b = ScreenToHandlePoint(cameraVectorB);
}
if (arrow)
{
Vector3 directionOffset = direction * handleSize * drawScale * 0.5f;
var backgroundColor = Helpers.YIQ(Handles.color);
backgroundColor.a = Handles.color.a;
//
using (new HandleColor(backgroundColor)) {
DrawThickLine(a, b, 4, alwaysVisible);
DrawThickLine(a - directionOffset, a, 4, alwaysVisible);
DrawThickLine(b - directionOffset, b, 4, alwaysVisible);
}
DrawThickLine(a, b, 2, alwaysVisible);
DrawThickLine(a - directionOffset, a, 2, alwaysVisible);
DrawThickLine(b - directionOffset, b, 2, alwaysVisible);
}
else
{
DrawThickLineWithOutline(a, b, 2, 2, alwaysVisible);
}
}
break;
}
return(distance);
}
