User Guide

ADOBE ATMOSPHERE 367

User Guide

sphere.windStrength = 3;

sphere.windDirection = Vector( 0.0, 0.0, -1.0 );

sphere.windAction = sphere.solver.createSimpleRigidWindAction(sphere.physicalModel,

sphere.windDirection, sphere.windStrength);

sphere.solver.addAction(sphere.windAction);

removeAnimator(sphere);

}

addAnimator(sphere);

Constraints

BreakableConstraint

A breakable constraint is actually an arbitrator that determines if a given constraint should remain active. The

breakable contraint is created by a method of the “FastConstraintSolver”, and is passed a constraint name and values

for linear and angular strength. If the speciﬁ ed constraint experiences stresses which are beyond the strength values

given, the constraint is abandoned, and the physical models will “break apart”.

Properties

angularStrength

Speciﬁ es the value at which the constraint will fail for angular stresses (such as experienced at a pivot point).

breakableConstraint.angularStrength = 50;

linearStrength

Speciﬁ es the value at which the constraint will fail for linear stresses (similar to tensile strength).

breakableConstraint.linearStrength = 50;

Code Sample

doorLeft = SceneGroup(“./resources/doorLeft.aer”).add();

doorLeft.anchor = theStage.getPrimitive(“doorLeft”);

doorLeft.position = doorLeft.anchor.position;

doorLeft.orientation = doorLeft.anchor.orientation;

doorLeft.pivot = doorLeft.anchor.position; // location of hinge

doorLeft.axis = Vector (0,1,0); // axis of hinge

hingeLeft = SceneGroup(“./resources/hingeLeft.aer”).add();

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

hingeLeft.position = hingeLeft.anchor.position;

hingeLeft.orientation = hingeLeft.anchor.orientation;

loader = new Object();

loader.solver = FastConstraintSolver();