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added voxelDrumming as JS
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ZappoMan
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167
examples/voxelDrumming.js
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167
examples/voxelDrumming.js
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//
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// voxelDrumming.js
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// hifi
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//
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// Created by Brad Hefta-Gaub on 2/14/14.
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// Copyright (c) 2014 HighFidelity, Inc. All rights reserved.
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//
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// This is an example script that demonstrates use of the Overlays, Controller, and Audio classes
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//
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// It adds Hydra controller "fingertip on voxels" drumming
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//
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Menu.addMenuItem({
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menuName: "Developer > Hand Options",
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menuItemName: "Voxel Drumming",
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isCheckable: true,
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isChecked: false
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});
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var collisionCenter = new Array();
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collisionCenter[0] = { x: 0, y: 0, z: 0};
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collisionCenter[1] = { x: 0, y: 0, z: 0};
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var collisionAge = new Array();
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collisionAge[0] = 0;
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collisionAge[1] = 0;
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var collisionDuration = new Array();
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collisionDuration[0] = 0;
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collisionDuration[1] = 0;
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var isColliding = new Array();
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isColliding[0] = false;
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isColliding[1] = false;
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var highlightVoxel = Overlays.addOverlay("cube",
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{
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position: { x: 0, y: 0, z: 0},
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size: 0,
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color: { red: 0, green: 0, blue: 0 },
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visible: false,
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lineWidth: 3,
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solid: false
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});
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var collisionBubble = new Array();
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collisionBubble[0] = Overlays.addOverlay("sphere",
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{
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position: { x: 0, y: 0, z: 0},
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size: 0,
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color: { red: 0, green: 0, blue: 0 },
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alpha: 0.5,
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visible: false
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});
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collisionBubble[1] = Overlays.addOverlay("sphere",
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{
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position: { x: 0, y: 0, z: 0},
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size: 0,
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color: { red: 0, green: 0, blue: 0 },
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alpha: 0.5,
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visible: false
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});
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var audioOptions = new AudioInjectionOptions();
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audioOptions.position = { x: MyAvatar.position.x, y: MyAvatar.position.y + 1, z: MyAvatar.position.z };
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audioOptions.volume = 1;
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function clamp(valueToClamp, minValue, maxValue) {
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return Math.max(minValue, Math.min(maxValue, valueToClamp));
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}
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function produceCollisionSound(palm, voxelDetail) {
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// Collision between finger and a voxel plays sound
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var palmVelocity = Controller.getSpatialControlVelocity(palm * 2);
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var speed = Vec3.length(palmVelocity);
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var fingerTipPosition = Controller.getSpatialControlPosition(palm * 2 + 1);
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var deltaTime = 1/60; //close enough
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var LOWEST_FREQUENCY = 100.0;
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var HERTZ_PER_RGB = 3.0;
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var DECAY_PER_SAMPLE = 0.0005;
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var DURATION_MAX = 2.0;
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var MIN_VOLUME = 0.1;
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var volume = MIN_VOLUME + clamp(speed, 0.0, (1.0 - MIN_VOLUME));
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var duration = volume;
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collisionCenter[palm] = fingerTipPosition;
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collisionAge[palm] = deltaTime;
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collisionDuration[palm] = duration;
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var voxelBrightness = voxelDetail.red + voxelDetail.green + voxelDetail.blue;
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var frequency = LOWEST_FREQUENCY + (voxelBrightness * HERTZ_PER_RGB);
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audioOptions.position = fingerTipPosition;
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Audio.startDrumSound(volume, frequency, DURATION_MAX, DECAY_PER_SAMPLE, audioOptions);
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}
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function update() {
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var deltaTime = 1/60; //close enough
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// Voxel Drumming with fingertips if enabled
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if (Menu.isOptionChecked("Voxel Drumming")) {
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for (var palm = 0; palm < 2; palm++) {
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var fingerTipPosition = Controller.getSpatialControlPosition(palm * 2 + 1);
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var voxel = Voxels.getVoxelEnclosingPoint(fingerTipPosition);
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if (voxel.s > 0) {
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if (!isColliding[palm]) {
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// Collision has just started
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isColliding[palm] = true;
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produceCollisionSound(palm, voxel);
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// Set highlight voxel
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Overlays.editOverlay(highlightVoxel,
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{
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position: { x: voxel.x, y: voxel.y, z: voxel.z},
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size: voxel.s + 0.002,
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color: { red: voxel.red + 128, green: voxel.green + 128, blue: voxel.blue + 128 },
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visible: true
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});
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}
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} else {
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if (isColliding[palm]) {
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// Collision has just ended
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isColliding[palm] = false;
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Overlays.editOverlay(highlightVoxel, { visible: false });
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}
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}
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if (collisionAge[palm] > 0) {
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collisionAge[palm] += deltaTime;
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}
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// If hand/voxel collision has happened, render a little expanding sphere
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if (collisionAge[palm] > 0) {
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var opacity = clamp(1 - (collisionAge[palm] / collisionDuration[palm]), 0, 1);
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var size = collisionAge[palm] * 0.25;
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Overlays.editOverlay(collisionBubble[palm],
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{
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position: { x: collisionCenter[palm].x, y: collisionCenter[palm].y, z: collisionCenter[palm].z},
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size: size,
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color: { red: 255, green: 0, blue: 0 },
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alpha: 0.5 * opacity,
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visible: true
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});
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if (collisionAge[palm] > collisionDuration[palm]) {
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collisionAge[palm] = 0;
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Overlays.editOverlay(collisionBubble[palm], { visible: false });
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}
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}
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} // palm loop
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} // menu item check
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}
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Script.willSendVisualDataCallback.connect(update);
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function scriptEnding() {
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Overlays.deleteOverlay(highlightVoxel);
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Overlays.deleteOverlay(collisionBubble[0]);
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Overlays.deleteOverlay(collisionBubble[1]);
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Menu.removeMenuItem("Developer > Hand Options","Voxel Drumming");
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}
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Script.scriptEnding.connect(scriptEnding);
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