0d14e5a379
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279 lines
No EOL
10 KiB
JavaScript
279 lines
No EOL
10 KiB
JavaScript
//
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// particlesTest.js
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// examples/example/entities
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//
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// Created by David Rowe on 2 Sep 2015.
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// Copyright 2015 High Fidelity, Inc.
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//
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// Click on the box entity to display different particle effects.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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(function () {
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var box,
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sphere,
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sphereDimensions = { x: 0.4, y: 0.8, z: 0.2 },
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pointDimensions = { x: 0.0, y: 0.0, z: 0.0 },
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sphereOrientation = Quat.fromPitchYawRollDegrees(-60.0, 30.0, 0.0),
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verticalOrientation = Quat.fromPitchYawRollDegrees(-90.0, 0.0, 0.0),
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particles,
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particleExample = -1,
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PARTICLE_RADIUS = 0.04,
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SLOW_EMIT_RATE = 2.0,
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HALF_EMIT_RATE = 50.0,
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FAST_EMIT_RATE = 100.0,
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SLOW_EMIT_SPEED = 0.025,
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FAST_EMIT_SPEED = 1.0,
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GRAVITY_EMIT_ACCELERATON = { x: 0.0, y: -0.3, z: 0.0 },
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ZERO_EMIT_ACCELERATON = { x: 0.0, y: 0.0, z: 0.0 },
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PI = 3.141592,
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DEG_TO_RAD = PI / 180.0,
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NUM_PARTICLE_EXAMPLES = 18;
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function onClickDownOnEntity(entityID) {
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if (entityID === box || entityID === sphere || entityID === particles) {
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particleExample = (particleExample + 1) % NUM_PARTICLE_EXAMPLES;
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switch (particleExample) {
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case 0:
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print("Simple emitter");
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Entities.editEntity(particles, {
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speedSpread: 0.0,
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accelerationSpread: { x: 0.0, y: 0.0, z: 0.0 },
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radiusSpread: 0.0,
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isEmitting: true
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});
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break;
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case 1:
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print("Speed spread");
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Entities.editEntity(particles, {
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speedSpread: 0.1
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});
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break;
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case 2:
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print("Acceleration spread");
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Entities.editEntity(particles, {
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speedSpread: 0.0,
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accelerationSpread: { x: 0.0, y: 0.1, z: 0.0 }
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});
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break;
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case 3:
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print("Radius spread - temporarily not working");
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Entities.editEntity(particles, {
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accelerationSpread: { x: 0.0, y: 0.0, z: 0.0 },
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radiusSpread: 0.035
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});
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break;
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case 4:
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print("Radius start and finish");
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Entities.editEntity(particles, {
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radiusSpread: 0.0,
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radiusStart: 0.0,
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particleRadius: PARTICLE_RADIUS,
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radiusFinish: 0.0
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});
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break;
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case 5:
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print("Alpha 0.5");
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Entities.editEntity(particles, {
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radiusStart: PARTICLE_RADIUS,
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particleRadius: PARTICLE_RADIUS,
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radiusFinish: PARTICLE_RADIUS,
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alpha: 0.5
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});
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break;
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case 6:
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print("Alpha spread - temporarily not working");
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Entities.editEntity(particles, {
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alpha: 0.5,
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alphaSpread: 0.5
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});
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break;
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case 7:
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print("Alpha start and finish");
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Entities.editEntity(particles, {
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alphaSpread: 0.0,
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alpha: 1.0,
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alphaStart: 0.0,
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alphaFinish: 0.0
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});
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break;
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case 8:
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print("Color spread - temporarily not working");
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Entities.editEntity(particles, {
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alpha: 1.0,
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alphaStart: 1.0,
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alphaFinish: 1.0,
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color: { red: 128, green: 128, blue: 128 },
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colorSpread: { red: 128, green: 0, blue: 0 }
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});
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break;
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case 9:
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print("Color start and finish");
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Entities.editEntity(particles, {
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color: { red: 255, green: 255, blue: 255 },
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colorSpread: { red: 0, green: 0, blue: 0 },
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colorStart: { red: 255, green: 0, blue: 0 },
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colorFinish: { red: 0, green: 255, blue: 0 }
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});
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break;
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case 10:
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print("Emit in a spread beam");
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Entities.editEntity(particles, {
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colorStart: { red: 255, green: 255, blue: 255 },
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colorFinish: { red: 255, green: 255, blue: 255 },
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alphaFinish: 0.0,
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emitRate: FAST_EMIT_RATE,
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polarFinish: 2.0 * DEG_TO_RAD
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});
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break;
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case 11:
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print("Emit in all directions from point");
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Entities.editEntity(particles, {
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emitSpeed: SLOW_EMIT_SPEED,
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emitAcceleration: ZERO_EMIT_ACCELERATON,
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polarFinish: PI
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});
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break;
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case 12:
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print("Emit from sphere surface");
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Entities.editEntity(particles, {
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colorStart: { red: 255, green: 255, blue: 255 },
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colorFinish: { red: 255, green: 255, blue: 255 },
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emitDimensions: sphereDimensions,
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emitOrientation: sphereOrientation
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});
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Entities.editEntity(box, {
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visible: false
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});
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Entities.editEntity(sphere, {
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visible: true
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});
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break;
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case 13:
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print("Emit from hemisphere of sphere surface");
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Entities.editEntity(particles, {
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polarFinish: PI / 2.0
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});
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break;
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case 14:
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print("Emit from equator of sphere surface");
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Entities.editEntity(particles, {
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polarStart: PI / 2.0,
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emitRate: HALF_EMIT_RATE
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});
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break;
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case 15:
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print("Emit from half equator of sphere surface");
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Entities.editEntity(particles, {
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azimuthStart: -PI / 2.0,
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azimuthFinish: PI / 2.0
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});
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break;
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case 16:
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print("Emit within eighth of sphere volume");
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Entities.editEntity(particles, {
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polarStart: 0.0,
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polarFinish: PI / 2.0,
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azimuthStart: 0,
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azimuthFinish: PI / 2.0,
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emitRadiusStart: 0.0,
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alphaFinish: 1.0,
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emitSpeed: 0.0
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});
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break;
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case 17:
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print("Stop emitting");
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Entities.editEntity(particles, {
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emitDimensions: pointDimensions,
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emitOrientation: verticalOrientation,
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alphaFinish: 1.0,
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emitRate: SLOW_EMIT_RATE,
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emitSpeed: FAST_EMIT_SPEED,
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emitAcceleration: GRAVITY_EMIT_ACCELERATON,
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polarStart: 0.0,
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polarFinish: 0.0,
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azimuthStart: -PI,
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azimuthFinish: PI,
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isEmitting: false
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});
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Entities.editEntity(box, {
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visible: true
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});
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Entities.editEntity(sphere, {
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visible: false
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});
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break;
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}
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}
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}
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function setUp() {
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var boxPoint,
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spawnPoint;
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boxPoint = Vec3.sum(MyAvatar.position, Vec3.multiply(4.0, Quat.getFront(Camera.getOrientation())));
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boxPoint = Vec3.sum(boxPoint, { x: 0.0, y: -0.5, z: 0.0 });
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spawnPoint = Vec3.sum(boxPoint, { x: 0.0, y: 1.0, z: 0.0 });
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box = Entities.addEntity({
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type: "Box",
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name: "ParticlesTest Box",
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position: boxPoint,
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rotation: verticalOrientation,
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dimensions: { x: 0.3, y: 0.3, z: 0.3 },
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color: { red: 128, green: 128, blue: 128 },
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lifetime: 3600, // 1 hour; just in case
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visible: true
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});
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// Same size and orientation as emitter when ellipsoid.
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sphere = Entities.addEntity({
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type: "Sphere",
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name: "ParticlesTest Sphere",
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position: boxPoint,
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rotation: sphereOrientation,
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dimensions: sphereDimensions,
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color: { red: 128, green: 128, blue: 128 },
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lifetime: 3600, // 1 hour; just in case
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visible: false
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});
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// 1.0m above the box or ellipsoid.
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particles = Entities.addEntity({
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type: "ParticleEffect",
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name: "ParticlesTest Emitter",
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position: spawnPoint,
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emitOrientation: verticalOrientation,
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particleRadius: PARTICLE_RADIUS,
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radiusSpread: 0.0,
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emitRate: SLOW_EMIT_RATE,
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emitSpeed: FAST_EMIT_SPEED,
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speedSpread: 0.0,
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emitAcceleration: GRAVITY_EMIT_ACCELERATON,
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accelerationSpread: { x: 0.0, y: 0.0, z: 0.0 },
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textures: "https://hifi-public.s3.amazonaws.com/alan/Particles/Particle-Sprite-Smoke-1.png",
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color: { red: 255, green: 255, blue: 255 },
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lifespan: 5.0,
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locked: false,
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isEmitting: false,
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lifetime: 3600 // 1 hour; just in case
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});
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Entities.clickDownOnEntity.connect(onClickDownOnEntity);
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print("Click on the box to cycle through particle examples");
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}
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function tearDown() {
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Entities.clickDownOnEntity.disconnect(onClickDownOnEntity);
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Entities.deleteEntity(particles);
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Entities.deleteEntity(box);
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Entities.deleteEntity(sphere);
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}
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setUp();
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Script.scriptEnding.connect(tearDown);
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}()); |