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Added height control, rearranged things so that the pattern isn't

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randomised every time the dimensions change
This commit is contained in:
Mike Lynch 2025-04-06 09:54:17 +10:00
parent e6f977b29e
commit 7b05658a7f
2 changed files with 20 additions and 8 deletions
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1
src/components/dots.js
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@ -45,6 +45,7 @@ function int_range(v1, v2) {
class DotMaker { class DotMaker {
constructor(width) { constructor(width) {
console.log(width);
this.width = width; this.width = width;
this.cx = 0.5 * width; this.cx = 0.5 * width;
this.cy = 0.5 * width; this.cy = 0.5 * width;

27
src/index.md
View File

@ -29,7 +29,16 @@ const MAG = 2;
const WIDTH = 20; const WIDTH = 20;
const HEIGHT = WIDTH; const HEIGHT = WIDTH;
const dm = new DotMaker(WIDTH); const cell = view(Inputs.range([1,20], {value: 10, step:1, label: "Cell size"}));
const mag = view(Inputs.range([1,5], {value: 2, step:1, label: "Magnificaton"}));
const width = view(Inputs.range([1,40], {value: 20, step:1, label: "Width"}));
const height = view(Inputs.range([1,40], {value: 20, step:1, label: "Height"}));
```
```js
const bg_input = Inputs.color({label: "background", value: d3.color("yellow").formatHex()}); const bg_input = Inputs.color({label: "background", value: d3.color("yellow").formatHex()});
const bg = view(bg_input); const bg = view(bg_input);
@ -118,6 +127,8 @@ if( palette_fn ) {
```js ```js
const dm = new DotMaker(width, height);
const dots1 = dm.dots(1 / m1, n1, false); const dots1 = dm.dots(1 / m1, n1, false);
const dots2 = dm.dots(1 / m2, n2, false); const dots2 = dm.dots(1 / m2, n2, false);
@ -129,9 +140,9 @@ const dots2 = dm.dots(1 / m2, n2, false);
const svg = d3.create("svg") const svg = d3.create("svg")
.attr("width", WIDTH * CELL * MAG) .attr("width", width * cell * mag)
.attr("height", HEIGHT * CELL * MAG) .attr("height", height * cell * mag)
.attr("viewBox", [ 0, 0, WIDTH, HEIGHT ]); .attr("viewBox", [ 0, 0, width, height ]);
svg.append("clipPath") svg.append("clipPath")
@ -139,8 +150,8 @@ svg.append("clipPath")
.append("rect") .append("rect")
.attr("x", 0) .attr("x", 0)
.attr("y", 0) .attr("y", 0)
.attr("width", WIDTH) .attr("width", width)
.attr("height", HEIGHT); .attr("height", height);
// re transitions: they should only run when updating the palette and // re transitions: they should only run when updating the palette and
@ -160,8 +171,8 @@ bg_g.selectAll("rect")
.join("rect") .join("rect")
.attr("x", 0) .attr("x", 0)
.attr("y", 0) .attr("y", 0)
.attr("width", WIDTH) .attr("width", width)
.attr("height", WIDTH) .attr("height", height)
.attr("fill", (d) => d.bg) .attr("fill", (d) => d.bg)
; ;