User Guide

ADOBE ATMOSPHERE 365

User Guide

solverA.addAction(armature.action);

removeAnimator(armature);

}

addAnimator(armature);

SingleDragAction

A Single Drag Action is a subtle force that is applied to a speciﬁ ed dynamic physical model. The effect is that of

slowing down the momentum of the object for both direction and rotation. This module differs from Drag Action in

that the effect can be limited to one object. Numerous Single Drag Actions can be created so that different physical

models can experienced customized drag.

A Single Drag Action is created by a method of the FastConstraintSolver(), and has adjustable properties for velocity

and angular velocity of drag (maximum = 1).

It should be noted that for any of the physics based constraints or actions, it is necessary to assign reasonable mass

values when creating the physical models so that physics processing does not become unstable (driven out of scope).

The guidelines for mass and inertia are decribed in the method createPhysicalModel().

Properties

angularVelocityDrag

The strength of the drag as it applies to object angular velocity (rotation).

singleDragAction.angularVelocityDrag = 1;

velocityDrag

The strength of the drag as it applies to object velocity.

singleDragAction.velocityDrag = 1;

Code Sample

cone = SceneGroup(“./cone.aer”).add();

cone.anchor = stageModel.getSolidObject(0).rootPrimitive.ﬁ nd(“./anchor1”);

cone.transform = cone.anchor.transform;

cone.solver = FastConstraintSolver();

cone.timestep = function(now)

{

if (!cone.loaded) return;

cone.physicalModel = cone.createConvexPhysicalModel(1);

cone.physicalModel.collide = true;

cone.physicalModel.acceleration = Vector(0.0, -32.0, 0.0);

cone.velocityDrag = 1;

cone.angularVelocityDrag = 1;