RotationYWidget Class Reference

The RotationYWidget JavaScript class. A rotatable circle widget around the y axis. More...

Signals
void	valueChanged (float y)
Signals inherited from WidgetBase
void	dragStarted (QScriptValue dragContext)
	signal called on mouse down when picking this widget with the Transform tool More...
void	drag (QScriptValue dragContext)
	signal called when this widget is dragged with the Transform tool More...
void	dragEnded ()
	signal called on mouse up after having manipulated this widget with the Transform tool More...

Additional Inherited Members
Public Slots inherited from WidgetBase
Attribute *	data (int index=0)

Detailed Description

The RotationYWidget JavaScript class. A rotatable circle widget around the y axis.

A rotation script widget along the y axis. This widget offers a circle in the XZ axis. The circle can be picked and dragged by the user to generate a rotation around the y axis. The following properties are supported by the widget:

Property	Type	Default Value	Description
data	String	-	The name of the automatically generated double floating point attribute (if none is provided)
data	Attribute	-	An attribute of double (floating point) type that can be shared with another widget or node.
radius	float	1	The radius of the circle in fields.
width	float	0.03	The width between the external and internal circles (band) in fields.
color	ColorRGBA	0, 255, 0, 120	The colour of the circle manipulator.
selection_color	ColorRGBA	light green	The colour of the circle manipulator when selected.

The following components constitute the widget:

Component	Type
attribute	DOUBLE
drag_manipulator	ROTATION_Y
painter	CIRCLE_Y
picker	MONO
local_transformation	ROTATION_Y

Connect to this scriptWidget valueChanged signal to be notified when a modification has been applied to the widget.

Controller.onShowControl = function()
{
  Controller.controls = [];
  var myRotationYdWidget = new RotationYWidget(
  {
    data : "myRotation",
    radius : 2,
    width : 0.05,
    color : ColorRGBA(0,255,0, 120),
    selected_color : ColorRGBA(128,255,128, 120)
  } );

  // Register a callback for when a transformation tool value changes.
  myRotationYdWidget.valueChanged.connect(myRotationChanged);
  Controller.controls.push(myRotationYdWidget);
}

In the callback function, convert the widget value into an action.

function myRotationChanged(newRotation)
{
  // Create a rotation matrix based on the 3D rotation of the widget.
  var yaxis = new Vector3d( 0,1,0 );

  var rotationMatrix = new Matrix4x4();
  rotationMatrix.rotateDegrees( newRotation, yaxis );

  // Rotate the original position of a series of pegs
  for(var i=0; i < myPegs.length; ++i)
  {
    var newPosition = rotationMatrix.multiply(myPegs[i].position);
    node.setTextAttr(myPegs[i].path, "POSITION.X", frame.current(), newPosition.x);
    node.setTextAttr(myPegs[i].path, "POSITION.Y", frame.current(), newPosition.y);
    node.setTextAttr(myPegs[i].path, "POSITION.Z", frame.current(), newPosition.z);
  }
}

Member Function Documentation

valueChanged

void RotationYWidget::valueChanged ( float  y )

signal