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fix distance-grab throwing

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This commit is contained in:
Seth Alves 2015-09-18 15:45:36 -07:00
parent 3d18edd9d1
commit 5367de35c1
1 changed files with 19 additions and 6 deletions
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25
examples/controllers/handControllerGrab.js
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@ -220,6 +220,7 @@ function controller(hand, triggerAction) {
// add the action and initialize some variables
this.currentObjectPosition = grabbedProperties.position;
this.currentObjectRotation = grabbedProperties.rotation;
this.currentObjectTime = Date.now();
this.handPreviousPosition = handControllerPosition;
this.handPreviousRotation = handRotation;
@ -268,7 +269,15 @@ function controller(hand, triggerAction) {
var handMoved = Vec3.subtract(handControllerPosition, this.handPreviousPosition);
this.handPreviousPosition = handControllerPosition;
var superHandMoved = Vec3.multiply(handMoved, radius);
this.currentObjectPosition = Vec3.sum(this.currentObjectPosition, superHandMoved);
var newObjectPosition = Vec3.sum(this.currentObjectPosition, superHandMoved);
var deltaPosition = Vec3.subtract(newObjectPosition, this.currentObjectPosition); // meters
var now = Date.now();
var deltaTime = (now - this.currentObjectTime) / MSEC_PER_SEC; // convert to seconds
this.computeReleaseVelocity(deltaPosition, deltaTime);
this.currentObjectPosition = newObjectPosition;
this.currentObjectTime = now;
// this doubles hand rotation
var handChange = Quat.multiply(Quat.slerp(this.handPreviousRotation, handRotation,
@ -343,8 +352,16 @@ function controller(hand, triggerAction) {
var deltaPosition = Vec3.subtract(handControllerPosition, this.currentHandControllerPosition); // meters
var deltaTime = (now - this.currentObjectTime) / MSEC_PER_SEC; // convert to seconds
this.computeReleaseVelocity(deltaPosition, deltaTime);
if (deltaTime > 0.0 && !vec3equal(this.currentHandControllerPosition, handControllerPosition)) {
this.currentHandControllerPosition = handControllerPosition;
this.currentObjectTime = now;
Entities.callEntityMethod(this.grabbedEntity, "continueNearGrab");
}
this.computeReleaseVelocity = function(deltaPosition, deltaTime) {
if (deltaTime > 0.0 && !vec3equal(deltaPosition, ZERO_VEC)) {
var grabbedVelocity = Vec3.multiply(deltaPosition, 1.0 / deltaTime);
// don't update grabbedVelocity if the trigger is off. the smoothing of the trigger
// value would otherwise give the held object time to slow down.
@ -355,10 +372,6 @@ function controller(hand, triggerAction) {
Vec3.multiply(grabbedVelocity, NEAR_GRABBING_VELOCITY_SMOOTH_RATIO));
}
}
this.currentHandControllerPosition = handControllerPosition;
this.currentObjectTime = now;
Entities.callEntityMethod(this.grabbedEntity, "continueNearGrab");
}