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Pomax
2020-09-19 22:51:19 -07:00
parent 4c0e71cd4a
commit d77d3649b6
27 changed files with 97 additions and 61 deletions
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9
docs/chapters/polybezier/poly.js
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@@ -71,6 +71,9 @@ draw() {
movePointsQuadratic(i, link) {
const l = points.length;
// Logic for "conventional" moving of an on-curve point,
// moving its associated control points, too.
if (link === `conventional` && i%2 === 0) {
let ppl = points[(l+i-3)%l];
let pl = points[(l+i-1)%l];
@@ -91,6 +94,8 @@ movePointsQuadratic(i, link) {
}
}
// Moving a control points moves literally every
// other control points, too.
if (i%2 === 1) {
let c1 = points[(l+i-2)%l];
let p1 = points[(l+i-1)%l];
@@ -127,6 +132,9 @@ movePointsQuadratic(i, link) {
movePointsCubic(i, link) {
const l = points.length;
// Logic for "conventional" moving of an on-curve point,
// moving its associated control points, too.
if (link === `conventional` && i%3 === 0) {
let left = points[(l+i-1)%l];
left.x += this.cursor.diff.x;
@@ -137,6 +145,7 @@ movePointsCubic(i, link) {
right.y += this.cursor.diff.y;
}
// Moving a control points moves the control "across its on-curve point".
if (i%3 > 0) {
let c, p;
if (i%3 === 1) {