public void DrawPreview(object fieldValue)
{
if (!showPreview)
{
return;
}
var area = ActionHelpers.GetControlPreviewRect(100f);
var axisCenter = ActionHelpers.DrawAxisXY(area);
Handles.color = previewColor;
// init min/max sizes for drawing
var max = 40f;
var min = 0f;
if (maxLength.Value > 0)
{
min = max * (minLength.Value / maxLength.Value);
}
// setup x/y scales to fit in area
var scaleX = 1f;
var scaleY = yScale.Value;
if (Mathf.Abs(scaleY) > 1f)
{
scaleX = 1f / scaleY;
scaleY = 1f;
}
switch (shape)
{
case Option.Circle:
ActionHelpers.DrawOval(axisCenter, max * scaleX, max * scaleY);
ActionHelpers.DrawOval(axisCenter, min * scaleX, min * scaleY);
break;
case Option.Rectangle:
ActionHelpers.DrawRect(axisCenter, max * scaleX, max * scaleY);
ActionHelpers.DrawRect(axisCenter, min * scaleX, min * scaleY);
break;
case Option.InArc:
var fromAngle = floatParam1.Value;
var toAngle = floatParam2.Value;
ActionHelpers.DrawArc(axisCenter, fromAngle, toAngle, max * scaleX, max * scaleY);
ActionHelpers.DrawArc(axisCenter, fromAngle, toAngle, min * scaleX, min * scaleY);
ActionHelpers.DrawSpoke(axisCenter, fromAngle, min, max, scaleX, scaleY);
ActionHelpers.DrawSpoke(axisCenter, toAngle, min, max, scaleX, scaleY);
break;
case Option.AtAngles:
var angleStep = floatParam1.Value;
if (angleStep < 1)
{
angleStep = 1;
}
// make sure we draw at least a dot (should be a better way?!)
if (max - min < 1.4f)
{
min = max - 1.4f;
}
for (float angle = 0; angle < 360; angle += angleStep)
{
ActionHelpers.DrawSpoke(axisCenter, angle, min, max, scaleX, scaleY);
}
break;
default:
throw new ArgumentOutOfRangeException();
}
Handles.color = Color.white;
}
