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massively speed up animations by using shared array buffers instead of delta sets

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This commit is contained in:
Stewart Allen 2022-10-11 23:18:55 -04:00
commit 2961aee379
1 changed files with 97 additions and 115 deletions
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218
src/kiri-mode/cam/animate.js
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@ -14,8 +14,9 @@ const asPoints = false;
let meshes = {},
unitScale = 1,
progress,
speedValues = [ 1, 2, 3, 4 ],
speedNames = [ "1x", "2x", "4x", "8x" ],
speedValues = [ 1, 2, 4, 8, 16 ],
speedPauses = [ 30, 20, 10, 5, 0 ],
speedNames = [ "1x", "2x", "4x", "8x", "!!" ],
speedMax = speedValues.length - 1,
speedIndex = 0,
speedLabel,
@ -65,9 +66,7 @@ kiri.load(() => {
progress = UC.newLabel('0%', {class:"progress"})
]);
updateSpeed();
setTimeout(() => {
play({steps: 1});
}, delay || 0);
setTimeout(step, delay || 0);
const toolpos = $('layer-toolpos');
toolpos.innerHTML = '';
UC.setGroup(toolpos);
@ -100,8 +99,12 @@ kiri.load(() => {
animate_clear
});
function meshAdd(id, ind, pos) {
function meshAdd(id, ind, pos, sab) {
const geo = new THREE.BufferGeometry();
if (sab) {
// use array buffer shared with worker
pos = new Float32Array(sab);
}
geo.setAttribute('position', new THREE.BufferAttribute(pos, 3));
if (ind.length) {
geo.setIndex(new THREE.BufferAttribute(new Uint32Array(ind), 1));
@ -149,18 +152,12 @@ kiri.load(() => {
meshes[id] = mesh;
}
function meshUpdates(id, updates) {
function meshUpdates(id) {
const mesh = meshes[id];
if (!mesh) {
return; // animate cancelled
}
const mpos = mesh.geometry.attributes.position;
for (let i=0, il=updates.length; i<il; ) {
const pos = updates[i++];
const val = updates[i++];
mpos.array[pos] = val;
}
mpos.needsUpdate = true;
mesh.geometry.attributes.position.needsUpdate = true;
space.update();
}
@ -169,8 +166,7 @@ kiri.load(() => {
delete meshes[id];
}
function step(opts) {
const { steps } = opts;
function step() {
updateSpeed();
kiri.client.animate({speed, steps: 1}, handleGridUpdate);
}
@ -182,7 +178,11 @@ kiri.load(() => {
playButton.style.display = 'none';
pauseButton.style.display = '';
}
kiri.client.animate({speed, steps: steps || Infinity}, handleGridUpdate);
kiri.client.animate({
speed,
steps: steps || Infinity,
pause: speedPauses[speedIndex]
}, handleGridUpdate);
}
function fast(opts) {
@ -190,7 +190,11 @@ kiri.load(() => {
updateSpeed(1);
playButton.style.display = 'none';
pauseButton.style.display = '';
kiri.client.animate({speed, steps: steps || Infinity}, handleGridUpdate);
kiri.client.animate({
speed,
steps: steps || Infinity,
pause: speedPauses[speedIndex]
}, handleGridUpdate);
}
function pause() {
@ -199,14 +203,6 @@ kiri.load(() => {
kiri.client.animate({speed: 0}, handleGridUpdate);
}
function skip() {
api.show.alert('fast fowarding without animation');
playButton.style.display = 'none';
pauseButton.style.display = '';
updateSpeed(Infinity);
kiri.client.animate({speed, steps: Infinity, toend: true}, handleGridUpdate);
}
function handleGridUpdate(data) {
checkMeshCommands(data);
if (data && data.progress) {
@ -236,8 +232,8 @@ kiri.load(() => {
return;
}
if (data.mesh_add) {
const { id, ind, pos, offset } = data.mesh_add;
meshAdd(id, ind, pos);
const { id, ind, pos, offset, sab } = data.mesh_add;
meshAdd(id, ind, pos, sab);
space.refresh();
if (offset) {
posOffset = offset;
@ -257,7 +253,7 @@ kiri.load(() => {
}
}
if (data.mesh_update) {
meshUpdates(data.id, data.mesh_update);
meshUpdates(data.id);
}
}
@ -289,7 +285,7 @@ kiri.load(() => {
const step = rez;
const stepsX = Math.floor(stock.x / step);
const stepsY = Math.floor(stock.y / step);
const { pos, ind } = createGrid(stepsX, stepsY, stock, step);
const { pos, ind, sab } = createGrid(stepsX, stepsY, stock, step);
const offset = {
x: process.outputOriginCenter ? 0 : stock.x / 2,
y: process.outputOriginCenter ? 0 : stock.y / 2,
@ -308,27 +304,20 @@ kiri.load(() => {
center = Object.assign({}, stock.center);
center.z -= stock.z / 2;
send.data({ mesh_add: { id: 0, pos, ind, offset } });
send.data({ mesh_add: { id: 0, ind, offset, sab } }, [ sab ]);
send.data({ mesh_move: { id: 0, pos: center } });
send.done();
};
kiri.worker.animate = function(data, send) {
if (data.speed >= 0) {
renderSpeed = data.speed;
}
if (data.steps > 0) {
stepsRemain = data.steps;
}
if (data.toend) {
skipMode = !skipMode;
} else {
skipMode = false;
}
checkStash(send);
renderPause = data.pause || renderPause;
renderSpeed = data.speed || 0;
if (animating) {
return send.done();
}
renderSteps = data.steps || 1;
renderDone = false;
animating = renderSpeed > 0;
renderPath(send);
};
@ -340,7 +329,8 @@ kiri.load(() => {
function createGrid(stepsX, stepsY, size, step) {
const gridPoints = stepsX * stepsY;
const pos = new Float32Array(gridPoints * 3);
const sab = new SharedArrayBuffer(gridPoints * 3 * 4)
const pos = new Float32Array(sab);
const ind = [];
const ox = size.x / 2;
const oy = size.y / 2;
@ -377,53 +367,55 @@ kiri.load(() => {
}
}
return { pos, ind };
return { pos, ind, sab };
}
let animateClear = false;
let animating = false;
let renderSpeed = 25;
let stepsRemain = 0;
let skipMode = false;
let renderDist = 0;
let renderDone = false;
let renderPause = 10;
let renderSteps = 0;
let renderSpeed = 0;
let skipMove = null;
let skipStash = [];
let toolUpdate;
function checkStash(send) {
if (!skipMode && skipStash.length) {
// merge & compress stash stack
skipStash.forEach(mesh_update => {
send.data({ id: 0, mesh_update }, [ mesh_update.buffer ]);
});
skipStash = [];
send.data({ mesh_move: skipMove });
// send latest tool position and progress bar
function renderUpdate(send) {
if (toolUpdate) {
send.data(toolUpdate);
}
send.data({ progress: pathIndex / path.length, id: 0, mesh_update: 1 });
}
function renderPath(send) {
if (animateClear) {
if (renderDone) {
return;
}
if (renderSteps-- === 0) {
animating = false;
renderPath(send);
return;
}
if (animating === false || animateClear || renderSpeed === 0) {
renderUpdate(send);
renderDone = true;
animating = false;
animateClear = false;
animating = false;
send.done();
return;
}
if (stepsRemain <= 0 || renderSpeed === 0) {
skipMode = false;
checkStash(send);
animating = false;
send.done();
return;
}
const next = path[pathIndex++];
const next = path[pathIndex];
if (!next) {
skipMode = false;
checkStash(send);
animating = false;
stepsRemain = 0;
send.done();
renderPath(send);
return;
}
animating = true;
stepsRemain--;
pathIndex++;
if (next.tool >= 0 && (!tool || tool.getNumber() !== next.tool)) {
// on real tool change, go to safe Z first
if (tool) {
@ -436,19 +428,23 @@ kiri.load(() => {
}
updateTool(next.tool, send);
}
const id = toolID;
const rezstep = rez * renderSpeed;
const rezstep = rez;
if (last) {
const lp = last.point, np = next.point;
last = next;
// dwell ops have no point
if (!np) {
setTimeout(() => { renderPath(send) }, 0);
return;
return renderPath(send);
}
const dx = np.x - lp.x, dy = np.y - lp.y, dz = np.z - lp.z;
// skip moves that are closer than resolution
if (Math.sqrt(dx*dx + dy*dy + dz*dz) < rezstep) {
setTimeout(() => { renderPath(send) }, 0);
const dist = Math.sqrt(dx*dx + dy*dy + dz*dz);
renderDist += dist;
// skip moves that are less than grid resolution
if (renderDist < rezstep) {
renderPath(send);
return;
}
@ -464,46 +460,41 @@ kiri.load(() => {
}
moves.push(next.point);
renderMoves(id, moves, send);
send.data({ progress: pathIndex / path.length });
} else {
last = next;
tool.pos = next.point;
send.data({ mesh_move: { id, pos: next.point }});
setTimeout(() => { renderPath(send) }, 0);
toolUpdate = { mesh_move: { id, pos: next.point }};
renderPath(send);
}
last = next;
}
function renderMoves(id, moves, send) {
let index = 0;
function update() {
if (animateClear) {
return renderPath(send);
function renderMoves(id, moves, send, seed = 0) {
for (let index = seed; index<moves.length; index++) {
const pos = moves[index];
if (!pos) {
throw `no pos @ ${index} of ${moves.length}`;
}
if (renderSpeed > 0 && index < moves.length) {
const pos = moves[index++];
if (!pos) throw `no pos @ ${index} of ${moves.length}`;
tool.pos = pos;
updateMesh(pos, send);
if (skipMode) {
skipMove = { id, pos };
} else {
send.data({ mesh_move: { id, pos } });
}
}
if (index < moves.length) {
setTimeout(update, 0);
} else {
setTimeout(() => { renderPath(send) }, 0);
tool.pos = pos;
deformMesh(pos, send);
toolUpdate = { mesh_move: { id, pos }};
// pause renderer at specified offsets
if (renderSpeed && renderDist >= renderSpeed) {
renderDist = 0;
renderUpdate(send);
setTimeout(() => {
renderMoves(id, moves, send, index);
}, renderPause);
return;
}
}
update(0);
renderPath(send);
}
function updateMesh(pos, send) {
// update stock mesh to reflect tool tip geometry at given XYZ position
function deformMesh(pos, send) {
const prof = tool.profile;
const { size, pix } = tool.profileDim;
const mid = Math.floor(pix / 2);
const update = new Float32Array(Math.round(prof.length * 0.8));
const rx = Math.floor((pos.x + stock.x / 2 - size / 2 - center.x) / rez);
const ry = Math.floor((pos.y + stock.y / 2 - size / 2 - center.y) / rez);
let upos = 0;
@ -524,19 +515,10 @@ kiri.load(() => {
const cz = grid[iz];
const tz = tool.pos.z - dz;
if (tz < cz) {
update[upos++] = iz;
update[upos++] = tz;
upos++;
grid[iz] = tz;
}
}
if (upos > 0) {
const mesh_update = update.slice(0,upos);
if (skipMode) {
skipStash.push(mesh_update);
} else {
send.data({ id: 0, mesh_update }, [ mesh_update.buffer ]);
}
}
}
function updateTool(toolnum, send) {
@ -550,7 +532,7 @@ kiri.load(() => {
// const frad = tool.fluteDiameter() / 2;
const prof = tool.profile;
const { size, pix } = tool.profileDim;
const { pos, ind } = createGrid(pix, pix, {x:size, y:size, z:flen+slen}, rez);
const { pos, ind, sab } = createGrid(pix, pix, {x:size, y:size, z:flen+slen}, rez);
const mid = Math.floor(pix/2);
// deform mesh to fit tool profile
for (let i=0, il=prof.length; i < il; ) {
@ -559,7 +541,7 @@ kiri.load(() => {
const dz = prof[i++];
pos[(dx * pix + dy) * 3 + 2] = -dz;
}
send.data({ mesh_add: { id:++toolID, pos, ind }});
send.data({ mesh_add: { id:++toolID, ind, sab }});
}
// load renderer code in worker context only