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v2.2.4
rough/bin/renderer.js
Preet Shihn 2fa4ec3c65 dot filler
2018-06-19 00:30:19 -07:00

598 lines
25 KiB
JavaScript
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import { RoughPath, RoughArcConverter, PathFitter } from './path.js';
import { getFiller } from './fillers/filler';
export class RoughRenderer {
line(x1, y1, x2, y2, o) {
const ops = this.doubleLine(x1, y1, x2, y2, o);
return { type: 'path', ops };
}
linearPath(points, close, o) {
const len = (points || []).length;
if (len > 2) {
let ops = [];
for (let i = 0; i < (len - 1); i++) {
ops = ops.concat(this.doubleLine(points[i][0], points[i][1], points[i + 1][0], points[i + 1][1], o));
}
if (close) {
ops = ops.concat(this.doubleLine(points[len - 1][0], points[len - 1][1], points[0][0], points[0][1], o));
}
return { type: 'path', ops };
}
else if (len === 2) {
return this.line(points[0][0], points[0][1], points[1][0], points[1][1], o);
}
return { type: 'path', ops: [] };
}
polygon(points, o) {
return this.linearPath(points, true, o);
}
rectangle(x, y, width, height, o) {
const points = [
[x, y], [x + width, y], [x + width, y + height], [x, y + height]
];
return this.polygon(points, o);
}
curve(points, o) {
const o1 = this._curveWithOffset(points, 1 * (1 + o.roughness * 0.2), o);
const o2 = this._curveWithOffset(points, 1.5 * (1 + o.roughness * 0.22), o);
return { type: 'path', ops: o1.concat(o2) };
}
ellipse(x, y, width, height, o) {
const increment = (Math.PI * 2) / o.curveStepCount;
let rx = Math.abs(width / 2);
let ry = Math.abs(height / 2);
rx += this.getOffset(-rx * 0.05, rx * 0.05, o);
ry += this.getOffset(-ry * 0.05, ry * 0.05, o);
const o1 = this._ellipse(increment, x, y, rx, ry, 1, increment * this.getOffset(0.1, this.getOffset(0.4, 1, o), o), o);
const o2 = this._ellipse(increment, x, y, rx, ry, 1.5, 0, o);
return { type: 'path', ops: o1.concat(o2) };
}
arc(x, y, width, height, start, stop, closed, roughClosure, o) {
const cx = x;
const cy = y;
let rx = Math.abs(width / 2);
let ry = Math.abs(height / 2);
rx += this.getOffset(-rx * 0.01, rx * 0.01, o);
ry += this.getOffset(-ry * 0.01, ry * 0.01, o);
let strt = start;
let stp = stop;
while (strt < 0) {
strt += Math.PI * 2;
stp += Math.PI * 2;
}
if ((stp - strt) > (Math.PI * 2)) {
strt = 0;
stp = Math.PI * 2;
}
const ellipseInc = (Math.PI * 2) / o.curveStepCount;
const arcInc = Math.min(ellipseInc / 2, (stp - strt) / 2);
const o1 = this._arc(arcInc, cx, cy, rx, ry, strt, stp, 1, o);
const o2 = this._arc(arcInc, cx, cy, rx, ry, strt, stp, 1.5, o);
let ops = o1.concat(o2);
if (closed) {
if (roughClosure) {
ops = ops.concat(this.doubleLine(cx, cy, cx + rx * Math.cos(strt), cy + ry * Math.sin(strt), o));
ops = ops.concat(this.doubleLine(cx, cy, cx + rx * Math.cos(stp), cy + ry * Math.sin(stp), o));
}
else {
ops.push({ op: 'lineTo', data: [cx, cy] });
ops.push({ op: 'lineTo', data: [cx + rx * Math.cos(strt), cy + ry * Math.sin(strt)] });
}
}
return { type: 'path', ops };
}
svgPath(path, o) {
path = (path || '').replace(/\n/g, ' ').replace(/(-\s)/g, '-').replace('/(\s\s)/g', ' ');
let p = new RoughPath(path);
if (o.simplification) {
const fitter = new PathFitter(p.linearPoints, p.closed);
const d = fitter.fit(o.simplification);
p = new RoughPath(d);
}
let ops = [];
const segments = p.segments || [];
for (let i = 0; i < segments.length; i++) {
const s = segments[i];
const prev = i > 0 ? segments[i - 1] : null;
const opList = this._processSegment(p, s, prev, o);
if (opList && opList.length) {
ops = ops.concat(opList);
}
}
return { type: 'path', ops };
}
solidFillPolygon(points, o) {
const ops = [];
if (points.length) {
const offset = o.maxRandomnessOffset || 0;
const len = points.length;
if (len > 2) {
ops.push({ op: 'move', data: [points[0][0] + this.getOffset(-offset, offset, o), points[0][1] + this.getOffset(-offset, offset, o)] });
for (let i = 1; i < len; i++) {
ops.push({ op: 'lineTo', data: [points[i][0] + this.getOffset(-offset, offset, o), points[i][1] + this.getOffset(-offset, offset, o)] });
}
}
}
return { type: 'fillPath', ops };
}
patternFillPolygon(points, o) {
const filler = getFiller(this, o);
return filler.fillPolygon(points, o);
}
patternFillEllipse(cx, cy, width, height, o) {
const filler = getFiller(this, o);
return filler.fillEllipse(cx, cy, width, height, o);
}
patternFillArc(x, y, width, height, start, stop, o) {
const cx = x;
const cy = y;
let rx = Math.abs(width / 2);
let ry = Math.abs(height / 2);
rx += this.getOffset(-rx * 0.01, rx * 0.01, o);
ry += this.getOffset(-ry * 0.01, ry * 0.01, o);
let strt = start;
let stp = stop;
while (strt < 0) {
strt += Math.PI * 2;
stp += Math.PI * 2;
}
if ((stp - strt) > (Math.PI * 2)) {
strt = 0;
stp = Math.PI * 2;
}
const increment = (stp - strt) / o.curveStepCount;
const points = [];
for (let angle = strt; angle <= stp; angle = angle + increment) {
points.push([cx + rx * Math.cos(angle), cy + ry * Math.sin(angle)]);
}
points.push([cx + rx * Math.cos(stp), cy + ry * Math.sin(stp)]);
points.push([cx, cy]);
return this.patternFillPolygon(points, o);
}
///
getOffset(min, max, ops) {
return ops.roughness * ((Math.random() * (max - min)) + min);
}
doubleLine(x1, y1, x2, y2, o) {
const o1 = this._line(x1, y1, x2, y2, o, true, false);
const o2 = this._line(x1, y1, x2, y2, o, true, true);
return o1.concat(o2);
}
_line(x1, y1, x2, y2, o, move, overlay) {
const lengthSq = Math.pow((x1 - x2), 2) + Math.pow((y1 - y2), 2);
let offset = o.maxRandomnessOffset || 0;
if ((offset * offset * 100) > lengthSq) {
offset = Math.sqrt(lengthSq) / 10;
}
const halfOffset = offset / 2;
const divergePoint = 0.2 + Math.random() * 0.2;
let midDispX = o.bowing * o.maxRandomnessOffset * (y2 - y1) / 200;
let midDispY = o.bowing * o.maxRandomnessOffset * (x1 - x2) / 200;
midDispX = this.getOffset(-midDispX, midDispX, o);
midDispY = this.getOffset(-midDispY, midDispY, o);
const ops = [];
if (move) {
if (overlay) {
ops.push({
op: 'move', data: [
x1 + this.getOffset(-halfOffset, halfOffset, o),
y1 + this.getOffset(-halfOffset, halfOffset, o)
]
});
}
else {
ops.push({
op: 'move', data: [
x1 + this.getOffset(-offset, offset, o),
y1 + this.getOffset(-offset, offset, o)
]
});
}
}
if (overlay) {
ops.push({
op: 'bcurveTo', data: [
midDispX + x1 + (x2 - x1) * divergePoint + this.getOffset(-halfOffset, halfOffset, o),
midDispY + y1 + (y2 - y1) * divergePoint + this.getOffset(-halfOffset, halfOffset, o),
midDispX + x1 + 2 * (x2 - x1) * divergePoint + this.getOffset(-halfOffset, halfOffset, o),
midDispY + y1 + 2 * (y2 - y1) * divergePoint + this.getOffset(-halfOffset, halfOffset, o),
x2 + this.getOffset(-halfOffset, halfOffset, o),
y2 + this.getOffset(-halfOffset, halfOffset, o)
]
});
}
else {
ops.push({
op: 'bcurveTo', data: [
midDispX + x1 + (x2 - x1) * divergePoint + this.getOffset(-offset, offset, o),
midDispY + y1 + (y2 - y1) * divergePoint + this.getOffset(-offset, offset, o),
midDispX + x1 + 2 * (x2 - x1) * divergePoint + this.getOffset(-offset, offset, o),
midDispY + y1 + 2 * (y2 - y1) * divergePoint + this.getOffset(-offset, offset, o),
x2 + this.getOffset(-offset, offset, o),
y2 + this.getOffset(-offset, offset, o)
]
});
}
return ops;
}
_curve(points, closePoint, o) {
const len = points.length;
let ops = [];
if (len > 3) {
const b = [];
const s = 1 - o.curveTightness;
ops.push({ op: 'move', data: [points[1][0], points[1][1]] });
for (let i = 1; (i + 2) < len; i++) {
const cachedVertArray = points[i];
b[0] = [cachedVertArray[0], cachedVertArray[1]];
b[1] = [cachedVertArray[0] + (s * points[i + 1][0] - s * points[i - 1][0]) / 6, cachedVertArray[1] + (s * points[i + 1][1] - s * points[i - 1][1]) / 6];
b[2] = [points[i + 1][0] + (s * points[i][0] - s * points[i + 2][0]) / 6, points[i + 1][1] + (s * points[i][1] - s * points[i + 2][1]) / 6];
b[3] = [points[i + 1][0], points[i + 1][1]];
ops.push({ op: 'bcurveTo', data: [b[1][0], b[1][1], b[2][0], b[2][1], b[3][0], b[3][1]] });
}
if (closePoint && closePoint.length === 2) {
const ro = o.maxRandomnessOffset;
ops.push({ op: 'lineTo', data: [closePoint[0] + this.getOffset(-ro, ro, o), closePoint[1] + +this.getOffset(-ro, ro, o)] });
}
}
else if (len === 3) {
ops.push({ op: 'move', data: [points[1][0], points[1][1]] });
ops.push({
op: 'bcurveTo', data: [
points[1][0], points[1][1],
points[2][0], points[2][1],
points[2][0], points[2][1]
]
});
}
else if (len === 2) {
ops = ops.concat(this.doubleLine(points[0][0], points[0][1], points[1][0], points[1][1], o));
}
return ops;
}
_ellipse(increment, cx, cy, rx, ry, offset, overlap, o) {
const radOffset = this.getOffset(-0.5, 0.5, o) - (Math.PI / 2);
const points = [];
points.push([
this.getOffset(-offset, offset, o) + cx + 0.9 * rx * Math.cos(radOffset - increment),
this.getOffset(-offset, offset, o) + cy + 0.9 * ry * Math.sin(radOffset - increment)
]);
for (let angle = radOffset; angle < (Math.PI * 2 + radOffset - 0.01); angle = angle + increment) {
points.push([
this.getOffset(-offset, offset, o) + cx + rx * Math.cos(angle),
this.getOffset(-offset, offset, o) + cy + ry * Math.sin(angle)
]);
}
points.push([
this.getOffset(-offset, offset, o) + cx + rx * Math.cos(radOffset + Math.PI * 2 + overlap * 0.5),
this.getOffset(-offset, offset, o) + cy + ry * Math.sin(radOffset + Math.PI * 2 + overlap * 0.5)
]);
points.push([
this.getOffset(-offset, offset, o) + cx + 0.98 * rx * Math.cos(radOffset + overlap),
this.getOffset(-offset, offset, o) + cy + 0.98 * ry * Math.sin(radOffset + overlap)
]);
points.push([
this.getOffset(-offset, offset, o) + cx + 0.9 * rx * Math.cos(radOffset + overlap * 0.5),
this.getOffset(-offset, offset, o) + cy + 0.9 * ry * Math.sin(radOffset + overlap * 0.5)
]);
return this._curve(points, null, o);
}
_curveWithOffset(points, offset, o) {
const ps = [];
ps.push([
points[0][0] + this.getOffset(-offset, offset, o),
points[0][1] + this.getOffset(-offset, offset, o),
]);
ps.push([
points[0][0] + this.getOffset(-offset, offset, o),
points[0][1] + this.getOffset(-offset, offset, o),
]);
for (let i = 1; i < points.length; i++) {
ps.push([
points[i][0] + this.getOffset(-offset, offset, o),
points[i][1] + this.getOffset(-offset, offset, o),
]);
if (i === (points.length - 1)) {
ps.push([
points[i][0] + this.getOffset(-offset, offset, o),
points[i][1] + this.getOffset(-offset, offset, o),
]);
}
}
return this._curve(ps, null, o);
}
_arc(increment, cx, cy, rx, ry, strt, stp, offset, o) {
const radOffset = strt + this.getOffset(-0.1, 0.1, o);
const points = [];
points.push([
this.getOffset(-offset, offset, o) + cx + 0.9 * rx * Math.cos(radOffset - increment),
this.getOffset(-offset, offset, o) + cy + 0.9 * ry * Math.sin(radOffset - increment)
]);
for (let angle = radOffset; angle <= stp; angle = angle + increment) {
points.push([
this.getOffset(-offset, offset, o) + cx + rx * Math.cos(angle),
this.getOffset(-offset, offset, o) + cy + ry * Math.sin(angle)
]);
}
points.push([
cx + rx * Math.cos(stp),
cy + ry * Math.sin(stp)
]);
points.push([
cx + rx * Math.cos(stp),
cy + ry * Math.sin(stp)
]);
return this._curve(points, null, o);
}
_bezierTo(x1, y1, x2, y2, x, y, path, o) {
const ops = [];
const ros = [o.maxRandomnessOffset || 1, (o.maxRandomnessOffset || 1) + 0.5];
let f = [0, 0];
for (let i = 0; i < 2; i++) {
if (i === 0) {
ops.push({ op: 'move', data: [path.x, path.y] });
}
else {
ops.push({ op: 'move', data: [path.x + this.getOffset(-ros[0], ros[0], o), path.y + this.getOffset(-ros[0], ros[0], o)] });
}
f = [x + this.getOffset(-ros[i], ros[i], o), y + this.getOffset(-ros[i], ros[i], o)];
ops.push({
op: 'bcurveTo', data: [
x1 + this.getOffset(-ros[i], ros[i], o), y1 + this.getOffset(-ros[i], ros[i], o),
x2 + this.getOffset(-ros[i], ros[i], o), y2 + this.getOffset(-ros[i], ros[i], o),
f[0], f[1]
]
});
}
path.setPosition(f[0], f[1]);
return ops;
}
_processSegment(path, seg, prevSeg, o) {
let ops = [];
switch (seg.key) {
case 'M':
case 'm': {
const delta = seg.key === 'm';
if (seg.data.length >= 2) {
let x = +seg.data[0];
let y = +seg.data[1];
if (delta) {
x += path.x;
y += path.y;
}
const ro = 1 * (o.maxRandomnessOffset || 0);
x = x + this.getOffset(-ro, ro, o);
y = y + this.getOffset(-ro, ro, o);
path.setPosition(x, y);
ops.push({ op: 'move', data: [x, y] });
}
break;
}
case 'L':
case 'l': {
const delta = seg.key === 'l';
if (seg.data.length >= 2) {
let x = +seg.data[0];
let y = +seg.data[1];
if (delta) {
x += path.x;
y += path.y;
}
ops = ops.concat(this.doubleLine(path.x, path.y, x, y, o));
path.setPosition(x, y);
}
break;
}
case 'H':
case 'h': {
const delta = seg.key === 'h';
if (seg.data.length) {
let x = +seg.data[0];
if (delta) {
x += path.x;
}
ops = ops.concat(this.doubleLine(path.x, path.y, x, path.y, o));
path.setPosition(x, path.y);
}
break;
}
case 'V':
case 'v': {
const delta = seg.key === 'v';
if (seg.data.length) {
let y = +seg.data[0];
if (delta) {
y += path.y;
}
ops = ops.concat(this.doubleLine(path.x, path.y, path.x, y, o));
path.setPosition(path.x, y);
}
break;
}
case 'Z':
case 'z': {
if (path.first) {
ops = ops.concat(this.doubleLine(path.x, path.y, path.first[0], path.first[1], o));
path.setPosition(path.first[0], path.first[1]);
path.first = null;
}
break;
}
case 'C':
case 'c': {
const delta = seg.key === 'c';
if (seg.data.length >= 6) {
let x1 = +seg.data[0];
let y1 = +seg.data[1];
let x2 = +seg.data[2];
let y2 = +seg.data[3];
let x = +seg.data[4];
let y = +seg.data[5];
if (delta) {
x1 += path.x;
x2 += path.x;
x += path.x;
y1 += path.y;
y2 += path.y;
y += path.y;
}
const ob = this._bezierTo(x1, y1, x2, y2, x, y, path, o);
ops = ops.concat(ob);
path.bezierReflectionPoint = [x + (x - x2), y + (y - y2)];
}
break;
}
case 'S':
case 's': {
const delta = seg.key === 's';
if (seg.data.length >= 4) {
let x2 = +seg.data[0];
let y2 = +seg.data[1];
let x = +seg.data[2];
let y = +seg.data[3];
if (delta) {
x2 += path.x;
x += path.x;
y2 += path.y;
y += path.y;
}
let x1 = x2;
let y1 = y2;
const prevKey = prevSeg ? prevSeg.key : '';
let ref = null;
if (prevKey === 'c' || prevKey === 'C' || prevKey === 's' || prevKey === 'S') {
ref = path.bezierReflectionPoint;
}
if (ref) {
x1 = ref[0];
y1 = ref[1];
}
const ob = this._bezierTo(x1, y1, x2, y2, x, y, path, o);
ops = ops.concat(ob);
path.bezierReflectionPoint = [x + (x - x2), y + (y - y2)];
}
break;
}
case 'Q':
case 'q': {
const delta = seg.key === 'q';
if (seg.data.length >= 4) {
let x1 = +seg.data[0];
let y1 = +seg.data[1];
let x = +seg.data[2];
let y = +seg.data[3];
if (delta) {
x1 += path.x;
x += path.x;
y1 += path.y;
y += path.y;
}
const offset1 = 1 * (1 + o.roughness * 0.2);
const offset2 = 1.5 * (1 + o.roughness * 0.22);
ops.push({ op: 'move', data: [path.x + this.getOffset(-offset1, offset1, o), path.y + this.getOffset(-offset1, offset1, o)] });
let f = [x + this.getOffset(-offset1, offset1, o), y + this.getOffset(-offset1, offset1, o)];
ops.push({
op: 'qcurveTo', data: [
x1 + this.getOffset(-offset1, offset1, o), y1 + this.getOffset(-offset1, offset1, o),
f[0], f[1]
]
});
ops.push({ op: 'move', data: [path.x + this.getOffset(-offset2, offset2, o), path.y + this.getOffset(-offset2, offset2, o)] });
f = [x + this.getOffset(-offset2, offset2, o), y + this.getOffset(-offset2, offset2, o)];
ops.push({
op: 'qcurveTo', data: [
x1 + this.getOffset(-offset2, offset2, o), y1 + this.getOffset(-offset2, offset2, o),
f[0], f[1]
]
});
path.setPosition(f[0], f[1]);
path.quadReflectionPoint = [x + (x - x1), y + (y - y1)];
}
break;
}
case 'T':
case 't': {
const delta = seg.key === 't';
if (seg.data.length >= 2) {
let x = +seg.data[0];
let y = +seg.data[1];
if (delta) {
x += path.x;
y += path.y;
}
let x1 = x;
let y1 = y;
const prevKey = prevSeg ? prevSeg.key : '';
let ref = null;
if (prevKey === 'q' || prevKey === 'Q' || prevKey === 't' || prevKey === 'T') {
ref = path.quadReflectionPoint;
}
if (ref) {
x1 = ref[0];
y1 = ref[1];
}
const offset1 = 1 * (1 + o.roughness * 0.2);
const offset2 = 1.5 * (1 + o.roughness * 0.22);
ops.push({ op: 'move', data: [path.x + this.getOffset(-offset1, offset1, o), path.y + this.getOffset(-offset1, offset1, o)] });
let f = [x + this.getOffset(-offset1, offset1, o), y + this.getOffset(-offset1, offset1, o)];
ops.push({
op: 'qcurveTo', data: [
x1 + this.getOffset(-offset1, offset1, o), y1 + this.getOffset(-offset1, offset1, o),
f[0], f[1]
]
});
ops.push({ op: 'move', data: [path.x + this.getOffset(-offset2, offset2, o), path.y + this.getOffset(-offset2, offset2, o)] });
f = [x + this.getOffset(-offset2, offset2, o), y + this.getOffset(-offset2, offset2, o)];
ops.push({
op: 'qcurveTo', data: [
x1 + this.getOffset(-offset2, offset2, o), y1 + this.getOffset(-offset2, offset2, o),
f[0], f[1]
]
});
path.setPosition(f[0], f[1]);
path.quadReflectionPoint = [x + (x - x1), y + (y - y1)];
}
break;
}
case 'A':
case 'a': {
const delta = seg.key === 'a';
if (seg.data.length >= 7) {
const rx = +seg.data[0];
const ry = +seg.data[1];
const angle = +seg.data[2];
const largeArcFlag = +seg.data[3];
const sweepFlag = +seg.data[4];
let x = +seg.data[5];
let y = +seg.data[6];
if (delta) {
x += path.x;
y += path.y;
}
if (x === path.x && y === path.y) {
break;
}
if (rx === 0 || ry === 0) {
ops = ops.concat(this.doubleLine(path.x, path.y, x, y, o));
path.setPosition(x, y);
}
else {
for (let i = 0; i < 1; i++) {
const arcConverter = new RoughArcConverter([path.x, path.y], [x, y], [rx, ry], angle, largeArcFlag ? true : false, sweepFlag ? true : false);
let segment = arcConverter.getNextSegment();
while (segment) {
const ob = this._bezierTo(segment.cp1[0], segment.cp1[1], segment.cp2[0], segment.cp2[1], segment.to[0], segment.to[1], path, o);
ops = ops.concat(ob);
segment = arcConverter.getNextSegment();
}
}
}
}
break;
}
default:
break;
}
return ops;
}
}
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