/// <summary>
/// Displays a disc handle.
/// </summary>
/// <returns>
/// The disc radius.
/// </returns>
/// <param name="id">Control identifier.</param>
/// <param name="radius">Radius.</param>
/// <param name="origin">Origin.</param>
/// <param name="orientation">Orientation.</param>
/// <param name="label">Label.</param>
/// <param name="fillMode">Fill mode.</param>
private static float DoDisc(
int id, float radius, Vector3 origin, Quaternion orientation, string label, FillMode fillMode
)
{
// set handle matrix
Matrix4x4 oldMatrix = Handles.matrix;
Handles.matrix *= Matrix4x4.TRS(origin, orientation, Vector3.one);
// create handles
radius =
LinearHandles.Dot(id, val: radius, origin: Vector3.zero, direction: Vector3.forward, label: label);
radius = LinearHandles.Dot(id, val: radius, origin: Vector3.zero, direction: Vector3.right);
radius = LinearHandles.Dot(id, val: radius, origin: Vector3.zero, direction: Vector3.back);
radius = LinearHandles.Dot(id, val: radius, origin: Vector3.zero, direction: Vector3.left);
// draw disc
Color color = Handles.color;
SceneGUI.SetHandleAlpha(color.a * SceneGUI.LineAlphaScalar);
Handles.DrawWireDisc(Vector3.zero, Vector3.up, radius);
// optionally fill the disc
if (fillMode == FillMode.Solid)
{
SceneGUI.SetHandleAlpha(color.a * SceneGUI.FillAlphaScalar);
Handles.DrawSolidDisc(Vector3.zero, Vector3.up, radius);
}
// reset color
Handles.color = color;
// reset handle matrix
Handles.matrix = oldMatrix;
// return the result
return(radius);
}
/// <summary>
/// Displays an angle handle.
/// </summary>
/// <returns>The handle's angle value.</returns>
/// <param name="id">Control identifier.</param>
/// <param name="angle">Angle.</param>
/// <param name="origin">Origin.</param>
/// <param name="orientation">Orientation.</param>
/// <param name="radius">Radius.</param>
/// <param name="label">Label.</param>
/// <param name="fillType">Fill type.</param>
private static float Angle(
int id,
float angle,
Vector3 origin,
Quaternion orientation,
float radius,
string label,
FillType fillType
)
{
// set handle matrix
Matrix4x4 oldMatrix = Handles.matrix;
Handles.matrix *= Matrix4x4.TRS(origin, orientation, Vector3.one);
// BUG: Slider2D only works in a matrix with a scale of 1
float scaleFactor = Handles.matrix.GetScale().GetMaxValue();
radius *= scaleFactor;
Handles.matrix = Matrix4x4.TRS(
Handles.matrix.MultiplyPoint(Vector3.zero),
Quaternion.LookRotation(
Handles.matrix.MultiplyVector(Vector3.forward), Handles.matrix.MultiplyVector(Vector3.up)
),
Vector3.one
);
// create handle
Vector3 handlePosition = Quaternion.AngleAxis(angle, Vector3.up) *
Vector3.forward * radius;
handlePosition = Handles.Slider2D(
handlePosition, Vector3.right,
Vector3.forward, Vector3.right,
SceneGUI.GetFixedHandleSize(handlePosition, SceneGUI.DotHandleSize),
Handles.DotCap, 0f
);
Handles.DrawLine(Vector3.zero, handlePosition);
float newAngle = Vector3.Angle(
Vector3.forward, handlePosition
) * Mathf.Sign(Vector3.Dot(Vector3.right, handlePosition.normalized));
angle += GetDeltaAngle(angle % 360f, newAngle);
// fill arc
if (fillType == FillType.Solid)
{
Color c = Handles.color;
SceneGUI.SetHandleAlpha(c.a * SceneGUI.FillAlphaScalar);
Handles.DrawSolidArc(Vector3.zero, Vector3.up, Vector3.forward, angle, radius);
Handles.color = c;
}
// draw the label if requested
if (!string.IsNullOrEmpty(label))
{
Handles.Label(Quaternion.AngleAxis(angle, Vector3.up) * Vector3.forward * radius, label);
}
// reset handle matrix
Handles.matrix = oldMatrix;
// return result
return(angle);
}
