{
const width = 1152;
const height = 600;
var state = "playing";
var currTime = 0;
var playTime = 0;
const animate = {
total: 11e3,
color: "#8dadd8",
a: { start: 5e2, duration: 1e3, delaySpan: 4e3 },
b: { start: 7e3, duration: 6e2, delaySpan: 3e3 }
};
animate.a.total = animate.a.duration + animate.a.delaySpan;
animate.b.total = animate.b.duration + animate.b.delaySpan;
const aspectRatio = width / height;
const resolution = new THREE.Vector2(width, height);
const renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(width, height);
renderer.gammaInput = true;
renderer.gammaOutput = true;
main.querySelector("#canvas-container").appendChild(renderer.domElement);
const svg = d3.select("#timeline-svg");
const timeMargin = { l: 10, r: 10, b: 10, t: 10 };
const trackHeight = 30;
const timeDimen = {
w: svg.node().width.baseVal.value - timeMargin.l - timeMargin.r,
h: svg.node().height.baseVal.value - timeMargin.t - timeMargin.b
};
const playPauseButton = d3.select("#play-pause").on("click", (d) => {
if (state == "play") {
playPauseButton.select("text").text("PLAY");
state = "pausing";
} else {
playPauseButton.select("text").text("PAUSE");
state = "playing";
}
});
const timeScale = d3
.scaleLinear()
.domain([0, animate.total])
.range([0, timeDimen.w * 0.7]);
const timeAxis = d3
.axisTop(timeScale)
.tickFormat((t) => d3.format(".3f")(t / 1000));
const trackList = svg
.select("#track-list")
.attr("transform", "translate(" + [timeMargin.l, timeMargin.t] + ")");
const defs = svg.append("defs");
const timeLine = svg
.select("#time-line")
.attr("transform", "translate(" + [timeDimen.w * 0.3, timeMargin.t] + ")");
timeLine
.append("g")
.attr("class", "time axis")
.attr("transform", "translate(0,26)")
.call(timeAxis);
const timeGroup = timeLine.append("g").attr("transform", "translate(0,30)");
const timeScrubber = timeLine
.append("g")
.attr("class", "scrubber")
.call(
d3
.drag()
.on("start", () => {
state = "pausing";
})
.on("drag", (event) => {
currTime = timeScale.invert(event.x);
})
);
timeScrubber
.append("path")
.attr("d", "M0,26v" + (timeDimen.h - 26))
.style("fill", "none")
.style("stroke", "#333");
timeScrubber
.append("path")
.attr("d", "M0,26h4l-4,6l-4,-6z")
.style("fill", "#333");
timeScrubber
.append("path")
.attr("d", "M0," + timeDimen.h + "h4l-4,-6l-4,6z")
.style("fill", "#333");
timeScrubber
.append("rect")
.style("cursor", "ew-resize")
.attr("height", timeDimen.h - 26)
.attr("width", 10)
.attr("x", -5)
.attr("y", 26)
.style("fill-opacity", 0);
let camera = new THREE.PerspectiveCamera(45, width / height, 1, 3000);
camera.position.z = 1000;
// let controls = new THREE.OrbitControls(camera, renderer.domElement);
// controls.enableRotate = false;
let scene = new THREE.Scene();
scene.background = new THREE.Color(0x222222);
scene.add(camera);
const xScale = d3
.scaleLinear()
.domain([1, 60])
.range([height / -2, height / 2]);
const y0Scale = d3
.scaleLinear()
.domain([1, 60])
.range([height / 2, height / -2]);
const y1Scale = d3
.scaleLinear()
.domain([60, -60])
.range([height / 2, height / -2]);
function updateTimes(data, circles) {
let circleCount = data.length;
let circleIndex = 0;
let tmpa = [];
let geometry = circles.geometry;
for (let i = 0; i < circleCount; i++) {
// define animation properties
tmpa[0] =
animate.a.start + (animate.a.delaySpan / 60) * data[i].original_pick;
geometry.setPrefabData(
geometry.attributes.a_startTime,
circleIndex,
tmpa
);
tmpa[0] = animate.a.duration;
geometry.setPrefabData(geometry.attributes.a_duration, circleIndex, tmpa);
tmpa[0] =
animate.b.start + (animate.b.delaySpan / 60) * Math.abs(data[i].moved);
geometry.setPrefabData(
geometry.attributes.b_startTime,
circleIndex,
tmpa
);
tmpa[0] =
((animate.b.duration - 500) / 60) * Math.abs(data[i].moved) + 500;
geometry.setPrefabData(geometry.attributes.b_duration, circleIndex, tmpa);
circleIndex++;
}
geometry.attributes.a_startTime.needsUpdate = true;
geometry.attributes.a_duration.needsUpdate = true;
geometry.attributes.b_startTime.needsUpdate = true;
geometry.attributes.b_duration.needsUpdate = true;
}
function createCircles(data) {
let radius = 5.0;
let circleCount = data.length;
let prefab = new THREE.CircleGeometry(radius, 20);
let geometry = new BAS.PrefabBufferGeometry(prefab, circleCount);
let a_startPositionBuffer = geometry.createAttribute("a_startPosition", 3);
let a_endPositionBuffer = geometry.createAttribute("a_endPosition", 3);
let a_startTimeBuffer = geometry.createAttribute("a_startTime", 1);
let a_durationBuffer = geometry.createAttribute("a_duration", 1);
let b_startPositionBuffer = geometry.createAttribute("b_startPosition", 3);
let b_endPositionBuffer = geometry.createAttribute("b_endPosition", 3);
let b_startTimeBuffer = geometry.createAttribute("b_startTime", 1);
let b_durationBuffer = geometry.createAttribute("b_duration", 1);
let b_scaleBuffer = geometry.createAttribute("b_scale", 1);
let circleIndex = 0;
let tmpa = [];
// Create the meshes
for (let i = 0; i < circleCount; i++) {
// define animation properties
tmpa[0] = xScale(data[i].original_pick);
tmpa[1] = y0Scale(data[i].original_pick);
tmpa[2] = 0.0;
geometry.setPrefabData(a_startPositionBuffer, circleIndex, tmpa);
tmpa[0] = xScale(data[i].original_pick);
tmpa[1] = y0Scale(data[i].redraft_pick);
tmpa[2] = 0.0;
geometry.setPrefabData(a_endPositionBuffer, circleIndex, tmpa);
geometry.setPrefabData(b_startPositionBuffer, circleIndex, tmpa);
tmpa[0] =
animate.a.start +
(animate.a.delaySpan / 60) * (data[i].original_pick - 1);
geometry.setPrefabData(a_startTimeBuffer, circleIndex, tmpa);
tmpa[0] = animate.a.duration;
geometry.setPrefabData(a_durationBuffer, circleIndex, tmpa);
tmpa[0] = xScale(data[i].original_pick);
tmpa[1] = y1Scale(data[i].moved);
tmpa[2] = 0.0;
geometry.setPrefabData(b_endPositionBuffer, circleIndex, tmpa);
tmpa[0] =
animate.b.start + (animate.b.delaySpan / 60) * Math.abs(data[i].moved);
geometry.setPrefabData(b_startTimeBuffer, circleIndex, tmpa);
tmpa[0] =
((animate.b.duration - 500) / 60) * Math.abs(data[i].moved) + 500;
geometry.setPrefabData(b_durationBuffer, circleIndex, tmpa);
tmpa[0] = Math.abs(data[i].moved) / 20 + 0.5;
geometry.setPrefabData(b_scaleBuffer, circleIndex, tmpa);
circleIndex++;
}
let material = new BAS.BasicAnimationMaterial({
transparent: true,
flatShading: THREE.FlatShading,
// vertexColors: THREE.VertexColors,
uniforms: {
time: { value: 0.0 },
a_duration: { value: animate.a.duration },
b_duration: { value: animate.b.duration },
a_startKey: { value: animate.a.start },
b_startKey: { value: animate.b.start },
diffuse: { value: new THREE.Color(0xaaaaaa) },
opacity: { value: 0.4 }
},
vertexParameters: [
"uniform float time;",
"uniform float a_startKey;",
"uniform float b_startKey;",
"attribute vec3 a_startPosition;",
"attribute vec3 a_endPosition;",
"attribute float a_startTime;",
"attribute float a_duration;",
"attribute vec3 b_startPosition;",
"attribute vec3 b_endPosition;",
"attribute float b_startTime;",
"attribute float b_duration;",
"attribute float b_scale;"
],
vertexFunctions: [BAS.ShaderChunk["ease_quad_in"]],
vertexPosition: [
"float startTime = a_startTime;",
"float duration = a_duration;",
"vec3 startPosition = a_startPosition;",
"vec3 endPosition = a_endPosition;",
"float startScale = 1.0;",
"float endScale = 1.0;",
"if(time > b_startKey) {",
" startTime = b_startTime;",
" duration = b_duration;",
" startPosition = b_startPosition;",
" endPosition = b_endPosition;",
" endScale = b_scale;",
"}",
"float progress = easeQuadIn(clamp(time - startTime, 0.0, duration) / duration);",
"transformed *= mix(startScale, endScale, progress);",
"transformed += mix(startPosition, endPosition, progress);"
]
});
let circles = new THREE.Mesh(geometry, material);
scene.add(circles);
return circles;
}
function update(time, circles) {
circles.material.uniforms.time.value = time;
timeScrubber.attr(
"transform",
"translate(" + [timeScale(currTime), 0] + ")"
);
}
function drawTimeline(circles) {
console.log("Draw timeline called!");
defs
.selectAll(".track-fill-hatch")
.data([animate])
.enter()
.append("pattern")
.attr("id", (d, i) => "track-fill-" + i)
.attr("patternUnits", "userSpaceOnUse")
.attr("width", 4)
.attr("height", 4)
.append("path")
.attr("d", "M-1,1 l2,-2M0,4 l4,-4M3,5 l2,-2")
.style("stroke", (d) => d.color)
.style("stroke-width", 1);
let tracks = timeGroup.selectAll(".track").data([animate]);
let e = tracks.enter().append("g").attr("class", "track");
e.append("rect")
.attr("class", "track-bg")
.attr("width", (d) => timeScale(d.total))
.attr("height", trackHeight)
.style("stroke", (d) => d.color)
.style("fill", (d, i) => "url(#track-fill-" + i + ")");
let key = tracks
.merge(e)
.attr("transform", (d, i) => "translate(" + [0, i * trackHeight] + ")")
.selectAll(".key")
.data((d) => [d.a, d.b]);
e = key.enter().append("g").attr("class", "key");
e.append("rect")
.attr("class", "duration")
.attr("y", -4)
.attr("height", 8)
.style("fill", "#444");
e.append("path")
.attr("class", "delay-span")
.style("stroke-width", 2)
.style("fill", "none")
.style("stroke", "#777");
e.append("path")
.attr("class", "key-frame")
.attr("d", "M0,4l4,-4l-4,-4l-4,4z")
.style("stroke-width", 2)
.style("fill", "#555");
e.append("rect")
.attr("class", "key-frame-hover")
.attr("height", trackHeight)
.attr("width", 6)
.attr("x", -3)
.attr("y", -trackHeight * 0.5)
.style("cursor", "ew-resize")
.style("fill-opacity", 0)
.call(
d3.drag().on("drag", (d) => {
d.start += timeScale.invert(d3.event.dx);
drawTimeline(circles);
updateTimes(data);
circles.material.needsUpdate = true;
})
);
e.append("rect")
.attr("class", "delay-span-hover")
.attr("height", trackHeight)
.attr("width", 6)
.attr("x", -3)
.attr("y", -trackHeight * 0.5)
.style("cursor", "ew-resize")
.style("fill-opacity", 0)
.call(
d3.drag().on("drag", (d) => {
let factor = d.duration / d.delaySpan;
d.delaySpan += timeScale.invert(-d3.event.dx);
d.start += timeScale.invert(d3.event.dx);
d.duration = factor * d.delaySpan;
d.total = d.duration + d.delaySpan;
drawTimeline();
updateTimes(data);
circles.material.needsUpdate = true;
})
);
let m = key.merge(e).attr("transform", (d) => {
return "translate(" + [0, trackHeight * 0.5] + ")";
});
m.selectAll(".key-frame,.key-frame-hover").attr(
"transform",
(d) => "translate(" + [timeScale(d.start + d.total), 0] + ")"
);
m.selectAll(".delay-span-hover").attr(
"transform",
(d) => "translate(" + [timeScale(d.start), 0] + ")"
);
m.select(".delay-span").attr(
"d",
(d) => "M" + timeScale(d.start) + ",-6v12m0,-6h" + timeScale(d.total)
);
m.select(".duration")
.attr("x", (d) => timeScale(d.start))
.attr("width", (d) => timeScale(d.duration));
}
// Create circles and start animating
const circles = createCircles(data);
drawTimeline(circles);
function tick(time) {
console.log("tick");
if (state == "pausing") {
state = "pause";
} else if (state == "playing") {
playTime = time - currTime;
state = "play";
}
if (state == "play") {
currTime = (time - playTime) % animate.total;
}
update(currTime, circles);
renderer.render(scene, camera);
requestAnimationFrame(tick);
}
requestAnimationFrame(tick);
}
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