IWMBrowser/iwmlib
IWMBrowser/iwmlib
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Fixed velocity computation in Throwable

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This commit is contained in:
Uwe Oestermeier 2019-05-31 10:15:50 +02:00
parent cc49df6e55
commit 8752d47e01
3 changed files with 47 additions and 25 deletions
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35
dist/iwmlib.js vendored
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@ -1687,12 +1687,23 @@
} }
class InteractionDelta { class InteractionDelta {
constructor(x, y, zoom, rotate, about) { /**
*Creates an instance of InteractionDelta.
* @param {*} x
* @param {*} y
* @param {*} zoom
* @param {*} rotate
* @param {*} about
* @param {*} number - number of involved pointer
* @memberof InteractionDelta
*/
constructor(x, y, zoom, rotate, about, number) {
this.x = x; this.x = x;
this.y = y; this.y = y;
this.zoom = zoom; this.zoom = zoom;
this.rotate = rotate; this.rotate = rotate;
this.about = about; this.about = about;
this.number = number;
} }
toString() { toString() {
@ -1766,16 +1777,13 @@
let p1 = this.previous.get(c1.key); let p1 = this.previous.get(c1.key);
let p2 = this.previous.get(c2.key); let p2 = this.previous.get(c2.key);
//let p1 = previous[0]
//let p2 = previous[1]
let d1 = Points.subtract(c1, p1); let d1 = Points.subtract(c1, p1);
let d2 = Points.subtract(c2, p2); let d2 = Points.subtract(c2, p2);
let cm = Points.mean(c1, c2); let cm = Points.mean(c1, c2);
//let pm = Points.mean(p1, p2)
// UO: Using the mean lead to jumps between time slices with 3 and 2 fingers // Using the mean leads to jumps between time slices with 3 and 2 fingers
// We use the mean of deltas instead // We use the mean of deltas instead
let delta = Points.mean(d1, d2); //Points.subtract(cm, pm) let delta = Points.mean(d1, d2);
let zoom = 1.0; let zoom = 1.0;
let distance1 = Points.distance(p1, p2); let distance1 = Points.distance(p1, p2);
let distance2 = Points.distance(c1, c2); let distance2 = Points.distance(c1, c2);
@ -1785,13 +1793,14 @@
let currentAngle = Points.angle(c1, c2); let currentAngle = Points.angle(c1, c2);
let previousAngle = Points.angle(p1, p2); let previousAngle = Points.angle(p1, p2);
let alpha = this.diffAngle(currentAngle, previousAngle); let alpha = this.diffAngle(currentAngle, previousAngle);
return new InteractionDelta(delta.x, delta.y, zoom, alpha, cm) return new InteractionDelta(delta.x, delta.y, zoom, alpha, cm, csize)
} else if (csize == 1 && psize == 1 && this.current.firstKey() == this.previous.firstKey()) { } else if (csize == 1 && psize == 1 && this.current.firstKey() == this.previous.firstKey()) {
// We need to ensure that the keys are the same // We need to ensure that the keys are the same, since single points with different keys
// can jump
let current = this.current.first(); let current = this.current.first();
let previous = this.previous.first(); let previous = this.previous.first();
let delta = Points.subtract(current, previous); let delta = Points.subtract(current, previous);
return new InteractionDelta(delta.x, delta.y, 1.0, 0.0, current) return new InteractionDelta(delta.x, delta.y, 1.0, 0.0, current, csize)
} }
return null return null
} }
@ -2940,7 +2949,9 @@
this.lastframe = t; this.lastframe = t;
if (dt > 0) { if (dt > 0) {
// Avoid division by zero errors later on // Avoid division by zero errors later on
let velocity = { t: t, dt: dt, dx: delta.x, dy: delta.y }; // and consider the number of involved pointers sind addVelocity will be called by the
// onMove events
let velocity = { t: t, dt: dt, dx: delta.x / delta.number, dy: delta.y / delta.number};
this.velocities.push(velocity); this.velocities.push(velocity);
while (this.velocities.length > buffer) { while (this.velocities.length > buffer) {
this.velocities.shift(); this.velocities.shift();
@ -2949,7 +2960,7 @@
} }
meanVelocity(milliseconds = 30) { meanVelocity(milliseconds = 30) {
this.addVelocity({ x: 0, y: 0 }); this.addVelocity({ x: 0, y: 0, number: 1 });
let sum = { x: 0, y: 0 }; let sum = { x: 0, y: 0 };
let count = 0; let count = 0;
let t = 0; let t = 0;

35
dist/iwmlib.pixi.js vendored
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@ -4851,12 +4851,23 @@
} }
class InteractionDelta { class InteractionDelta {
constructor(x, y, zoom, rotate, about) { /**
*Creates an instance of InteractionDelta.
* @param {*} x
* @param {*} y
* @param {*} zoom
* @param {*} rotate
* @param {*} about
* @param {*} number - number of involved pointer
* @memberof InteractionDelta
*/
constructor(x, y, zoom, rotate, about, number) {
this.x = x; this.x = x;
this.y = y; this.y = y;
this.zoom = zoom; this.zoom = zoom;
this.rotate = rotate; this.rotate = rotate;
this.about = about; this.about = about;
this.number = number;
} }
toString() { toString() {
@ -4930,16 +4941,13 @@
let p1 = this.previous.get(c1.key); let p1 = this.previous.get(c1.key);
let p2 = this.previous.get(c2.key); let p2 = this.previous.get(c2.key);
//let p1 = previous[0]
//let p2 = previous[1]
let d1 = Points.subtract(c1, p1); let d1 = Points.subtract(c1, p1);
let d2 = Points.subtract(c2, p2); let d2 = Points.subtract(c2, p2);
let cm = Points.mean(c1, c2); let cm = Points.mean(c1, c2);
//let pm = Points.mean(p1, p2)
// UO: Using the mean lead to jumps between time slices with 3 and 2 fingers // Using the mean leads to jumps between time slices with 3 and 2 fingers
// We use the mean of deltas instead // We use the mean of deltas instead
let delta = Points.mean(d1, d2); //Points.subtract(cm, pm) let delta = Points.mean(d1, d2);
let zoom = 1.0; let zoom = 1.0;
let distance1 = Points.distance(p1, p2); let distance1 = Points.distance(p1, p2);
let distance2 = Points.distance(c1, c2); let distance2 = Points.distance(c1, c2);
@ -4949,13 +4957,14 @@
let currentAngle = Points.angle(c1, c2); let currentAngle = Points.angle(c1, c2);
let previousAngle = Points.angle(p1, p2); let previousAngle = Points.angle(p1, p2);
let alpha = this.diffAngle(currentAngle, previousAngle); let alpha = this.diffAngle(currentAngle, previousAngle);
return new InteractionDelta(delta.x, delta.y, zoom, alpha, cm) return new InteractionDelta(delta.x, delta.y, zoom, alpha, cm, csize)
} else if (csize == 1 && psize == 1 && this.current.firstKey() == this.previous.firstKey()) { } else if (csize == 1 && psize == 1 && this.current.firstKey() == this.previous.firstKey()) {
// We need to ensure that the keys are the same // We need to ensure that the keys are the same, since single points with different keys
// can jump
let current = this.current.first(); let current = this.current.first();
let previous = this.previous.first(); let previous = this.previous.first();
let delta = Points.subtract(current, previous); let delta = Points.subtract(current, previous);
return new InteractionDelta(delta.x, delta.y, 1.0, 0.0, current) return new InteractionDelta(delta.x, delta.y, 1.0, 0.0, current, csize)
} }
return null return null
} }
@ -6104,7 +6113,9 @@
this.lastframe = t; this.lastframe = t;
if (dt > 0) { if (dt > 0) {
// Avoid division by zero errors later on // Avoid division by zero errors later on
let velocity = { t: t, dt: dt, dx: delta.x, dy: delta.y }; // and consider the number of involved pointers sind addVelocity will be called by the
// onMove events
let velocity = { t: t, dt: dt, dx: delta.x / delta.number, dy: delta.y / delta.number};
this.velocities.push(velocity); this.velocities.push(velocity);
while (this.velocities.length > buffer) { while (this.velocities.length > buffer) {
this.velocities.shift(); this.velocities.shift();
@ -6113,7 +6124,7 @@
} }
meanVelocity(milliseconds = 30) { meanVelocity(milliseconds = 30) {
this.addVelocity({ x: 0, y: 0 }); this.addVelocity({ x: 0, y: 0, number: 1 });
let sum = { x: 0, y: 0 }; let sum = { x: 0, y: 0 };
let count = 0; let count = 0;
let t = 0; let t = 0;

2
lib/scatter.js
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@ -138,7 +138,7 @@ class Throwable {
} }
meanVelocity(milliseconds = 30) { meanVelocity(milliseconds = 30) {
this.addVelocity({ x: 0, y: 0 }) this.addVelocity({ x: 0, y: 0, number: 1 })
let sum = { x: 0, y: 0 } let sum = { x: 0, y: 0 }
let count = 0 let count = 0
let t = 0 let t = 0