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light trails from rave stick

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ericrius1 2015-12-17 10:25:51 -08:00
parent 064c05e98c
commit f7811cf5dc
1 changed files with 46 additions and 15 deletions
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61
examples/flowArts/raveStick/raveStickEntityScript.js
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@ -18,6 +18,8 @@
var LINE_DIMENSIONS = 100; var LINE_DIMENSIONS = 100;
var MAX_POINTS_PER_LINE = 50; var MAX_POINTS_PER_LINE = 50;
var MIN_POINT_DISTANCE = 0.02; var MIN_POINT_DISTANCE = 0.02;
var STROKE_WIDTH = 0.05
var ugLSD = 25;
var RaveStick = function() { var RaveStick = function() {
_this = this; _this = this;
this.colorPalette = [{ this.colorPalette = [{
@ -32,7 +34,11 @@
var texture = "https://s3.amazonaws.com/hifi-public/eric/textures/paintStrokes/trails.png"; var texture = "https://s3.amazonaws.com/hifi-public/eric/textures/paintStrokes/trails.png";
this.trail = Entities.addEntity({ this.trail = Entities.addEntity({
type: "PolyLine", type: "PolyLine",
dimensions: {x: LINE_DIMENSIONS, y: LINE_DIMENSIONS, z: LINE_DIMENSIONS}, dimensions: {
x: LINE_DIMENSIONS,
y: LINE_DIMENSIONS,
z: LINE_DIMENSIONS
},
color: { color: {
red: 255, red: 255,
green: 255, green: 255,
@ -58,29 +64,58 @@
this.points = []; this.points = [];
this.normals = []; this.normals = [];
this.strokeWidths = []; this.strokeWidths = [];
this.setupEraseInterval();
}, },
continueNearGrab: function() { continueNearGrab: function() {
var position = Entities.getEntityProperties(this.entityID, "position").position; var props = Entities.getEntityProperties(this.entityID, ["position", "rotation"]);
var forwardVec = Quat.getFront(Quat.multiply(props.rotation, Quat.fromPitchYawRollDegrees(-90, 0, 0)));
forwardVec = Vec3.normalize(forwardVec);
var forwardQuat = orientationOf(forwardVec);
var position = Vec3.sum(props.position, Vec3.multiply(Quat.getFront(props.rotation), 0.2));
// position.z += 0.1;
// position.x += -0.035;
var localPoint = Vec3.subtract(position, this.trailBasePosition); var localPoint = Vec3.subtract(position, this.trailBasePosition);
if (this.points.length >=1 && Vec3.distance(localPoint, this.points[this.points.length - 1]) < MIN_POINT_DISTANCE) { if (this.points.length >= 1 && Vec3.distance(localPoint, this.points[this.points.length - 1]) < MIN_POINT_DISTANCE) {
//Need a minimum distance to avoid binormal NANs //Need a minimum distance to avoid binormal NANs
return; return;
} }
if (this.points.length === MAX_POINTS_PER_LINE) {
this.points.shift();
this.normals.shift();
this.strokeWidths.shift();
}
this.points.push(localPoint); this.points.push(localPoint);
var normal = computeNormal(position, Camera.getPosition()); var normal = Quat.getUp(props.rotation);
this.normals.push(normal); this.normals.push(normal);
this.strokeWidths.push(0.04); this.strokeWidths.push(STROKE_WIDTH);
Entities.editEntity(this.trail, { Entities.editEntity(this.trail, {
linePoints: this.points, linePoints: this.points,
normals: this.normals, normals: this.normals,
strokeWidths: this.strokeWidths strokeWidths: this.strokeWidths
}) });
}, },
releaseGrab: function() { setupEraseInterval: function() {
this.trailEraseInterval = Script.setInterval(function() {
if (_this.points.length > 0) {
_this.points.shift();
_this.normals.shift();
_this.strokeWidths.shift();
Entities.editEntity(_this.trail, {
linePoints: _this.points,
strokeWidths: _this.strokeWidths,
normals: _this.normals
});
}
}, ugLSD);
},
releaseGrab: function() {
Script.clearInterval(this.trailEraseInterval);
}, },
preload: function(entityID) { preload: function(entityID) {
@ -91,7 +126,7 @@
unload: function() { unload: function() {
Entities.deleteEntity(this.beam); Entities.deleteEntity(this.beam);
Entities.deleteEntity(this.trail); Entities.deleteEntity(this.trail);
// Entities.deleteEntity(this.beamTrail); Script.clearInterval(this.trailEraseInterval);
}, },
createBeam: function() { createBeam: function() {
@ -111,6 +146,7 @@
isEmitting: true, isEmitting: true,
"name": "ParticlesTest Emitter", "name": "ParticlesTest Emitter",
"colorStart": color, "colorStart": color,
colorSpread: {red: 200, green : 10, blue: 10},
color: { color: {
red: 200, red: 200,
green: 200, green: 200,
@ -118,16 +154,11 @@
}, },
"colorFinish": color, "colorFinish": color,
"maxParticles": 100000, "maxParticles": 100000,
"lifespan": 2, "lifespan": 1,
"emitRate": 1000, "emitRate": 1000,
emitOrientation: forwardQuat, emitOrientation: forwardQuat,
"emitSpeed": .4, "emitSpeed": .2,
"speedSpread": 0.0, "speedSpread": 0.0,
// "emitDimensions": {
// "x": .1,
// "y": .1,
// "z": .1
// },
"polarStart": 0, "polarStart": 0,
"polarFinish": .0, "polarFinish": .0,
"azimuthStart": .1, "azimuthStart": .1,