/*
* Create a disc handle for val using the specified parameters
* */
private static void DiscHandle(ref float val, Vector3 origin, Quaternion orientation, string label, Color col, bool isFilled)
{
// compute handle locations based on disc orientation
Vector3 right = orientation * Vector3.right;
Vector3 up = orientation * Vector3.up;
Vector3 forward = orientation * Vector3.forward;
// set handle color
Color oldColor = Handles.color;
CustomHandleUtilities.SetHandleColor(col); // ensure it will still render even if alpha is 0
// create handles
LinearHandles.ValueSlider(ref val, origin, forward, label, Handles.color);
LinearHandles.ValueSlider(ref val, origin, right, Handles.color);
LinearHandles.ValueSlider(ref val, origin, -forward, Handles.color);
LinearHandles.ValueSlider(ref val, origin, -right, Handles.color);
// draw disc
CustomHandleUtilities.SetHandleColor(col, col.a * 0.5f); // ensure it will still render even if alpha is 0
Handles.DrawWireDisc(origin, up, val);
// optionally fill the disc
if (isFilled)
{
CustomHandleUtilities.SetHandleColor(col, col.a * 0.1f);
Handles.DrawSolidDisc(origin, up, val);
}
// reset handle color
CustomHandleUtilities.SetHandleColor(oldColor);
}
// manually specify label and color
public static void WireBox(ref Vector3 size, Vector3 center, Quaternion orientation,
string label, Color col)
{
// set handle color
Color oldColor = Handles.color;
CustomHandleUtilities.SetHandleColor(col);
// TODO: do something with label?
// create linear handles to adjust size
LinearHandles.ValueSlider(ref size.x, center - orientation * Vector3.right * size.x * 0.5f, orientation * Vector3.right);
LinearHandles.ValueSlider(ref size.x, center + orientation * Vector3.right * size.x * 0.5f, orientation * Vector3.left);
LinearHandles.ValueSlider(ref size.y, center - orientation * Vector3.up * size.y * 0.5f, orientation * Vector3.up);
LinearHandles.ValueSlider(ref size.y, center + orientation * Vector3.up * size.y * 0.5f, orientation * Vector3.down);
LinearHandles.ValueSlider(ref size.z, center - orientation * Vector3.forward * size.z * 0.5f, orientation * Vector3.forward);
LinearHandles.ValueSlider(ref size.z, center + orientation * Vector3.forward * size.z * 0.5f, orientation * Vector3.back);
// draw the shape
Vector3[] corners = new Vector3[8];
corners[0] = center + orientation * (new Vector3(size.x * 0.5f, size.y * 0.5f, size.z * 0.5f));
corners[1] = center + orientation * (new Vector3(size.x * 0.5f, -size.y * 0.5f, size.z * 0.5f));
corners[2] = center + orientation * (new Vector3(size.x * 0.5f, size.y * 0.5f, -size.z * 0.5f));
corners[3] = center + orientation * (new Vector3(size.x * 0.5f, -size.y * 0.5f, -size.z * 0.5f));
corners[4] = center + orientation * (new Vector3(-size.x * 0.5f, -size.y * 0.5f, -size.z * 0.5f));
corners[5] = center + orientation * (new Vector3(-size.x * 0.5f, size.y * 0.5f, size.z * 0.5f));
corners[6] = center + orientation * (new Vector3(-size.x * 0.5f, -size.y * 0.5f, size.z * 0.5f));
corners[7] = center + orientation * (new Vector3(-size.x * 0.5f, size.y * 0.5f, -size.z * 0.5f));
Handles.DrawLine(corners[0], corners[1]);
Handles.DrawLine(corners[0], corners[2]);
Handles.DrawLine(corners[0], corners[5]);
Handles.DrawLine(corners[1], corners[3]);
Handles.DrawLine(corners[1], corners[6]);
Handles.DrawLine(corners[2], corners[3]);
Handles.DrawLine(corners[2], corners[7]);
Handles.DrawLine(corners[3], corners[4]);
Handles.DrawLine(corners[4], corners[6]);
Handles.DrawLine(corners[4], corners[7]);
Handles.DrawLine(corners[5], corners[6]);
Handles.DrawLine(corners[5], corners[7]);
// reset handle color
CustomHandleUtilities.SetHandleColor(oldColor);
}
/*
* Create a disc handle for radius at t using the specified parameters
* */
private static void CylinderHandle(ref float radius, ref float height, Vector3 center, Quaternion orientation, string label, Color col, bool isCapsule)
{
// clamp values
radius = Mathf.Abs(radius);
height = Mathf.Abs(height);
float oldRadius = radius;
// TODO: do something with label?
// set handle color
Color oldColor = Handles.color;
CustomHandleUtilities.SetHandleColor(col);
// compute disc handle locations based on orientation
Vector3 right = orientation * Vector3.right * radius;
Vector3 up = orientation * Vector3.up * height * 0.5f;
Vector3 forward = orientation * Vector3.forward * radius;
// create a disc handle at each end of the cylinder
Vector3 upperPoint = center + (orientation * Vector3.up) * (height * 0.5f - (isCapsule?radius:0f));
Vector3 lowerPoint = center + (orientation * Vector3.up) * (height * -0.5f + (isCapsule?radius:0f));
if (!isCapsule)
{
DiscHandles.WireDisc(ref radius, upperPoint, orientation, label, col);
DiscHandles.WireDisc(ref radius, lowerPoint, orientation, label, col);
}
else
{
Handles.DrawWireDisc(upperPoint, up, radius);
Handles.DrawWireDisc(lowerPoint, up, radius);
DiscHandles.WireDisc(ref radius, center, orientation, label, col);
}
// draw a line connecting the handles to visualize the height
Handles.DrawLine(upperPoint + forward, lowerPoint + forward);
Handles.DrawLine(upperPoint - forward, lowerPoint - forward);
Handles.DrawLine(upperPoint + right, lowerPoint + right);
Handles.DrawLine(upperPoint - right, lowerPoint - right);
// create a linear handles to adjust height
LinearHandles.ValueSlider(ref height, center - up, up);
LinearHandles.ValueSlider(ref height, center + up, -up);
// create caps if requested
if (isCapsule)
{
Handles.DrawWireArc(center - up + up.normalized * radius, right, forward, 180f, radius);
Handles.DrawWireArc(center - up + up.normalized * radius, forward, right, -180f, radius);
Handles.DrawWireArc(center + up - up.normalized * radius, right, forward, -180f, radius);
Handles.DrawWireArc(center + up - up.normalized * radius, forward, right, 180f, radius);
// ensure that height and radius values are valid
if (radius > height * 0.5f)
{
// user was operating a radius handle
if (radius > oldRadius)
{
radius = height * 0.5f;
}
// user was operating a height handle
else
{
height = radius * 2f;
}
}
}
// reset handle color
CustomHandleUtilities.SetHandleColor(oldColor);
}
