Racquel is pursuing a career in Data Science & Information Visualization. She is a PhD student at Northeastern University.
class RoundedRectangle {
constructor(spec) {
spec = spec || {};
this.x = spec.x;
this.y = spec.y;
this.width = spec.width;
this.height = spec.height;
this.borderRadius = spec.borderRadius;
this.n = spec.n || 24;
this.stroke = spec.stroke;
this.strokeWidth = spec.strokeWidth;
this.fill = spec.fill || "none";
this.opacity = spec.opacity || 1;
}
get path() {
let step = Math.PI / 2 / this.n;
let path = [];
path.push([this.x + this.borderRadius, this.y]);
path.push([this.x + this.width - this.borderRadius, this.y]);
for (let i = 0.5 * Math.PI; i > 0; i -= step) {
let centerX = this.x + this.width - this.borderRadius;
let centerY = this.y + this.borderRadius;
let x = centerX + Math.cos(i) * this.borderRadius;
let y = centerY - Math.sin(i) * this.borderRadius;
path.push([x, y]);
}
path.push([this.x + this.width, this.y + this.borderRadius]);
path.push([this.x + this.width, this.y + this.height - this.borderRadius]);
for (let i = 0; i > -0.5 * Math.PI; i -= step) {
let centerX = this.x + this.width - this.borderRadius;
let centerY = this.y + this.height - this.borderRadius;
let x = centerX + Math.cos(i) * this.borderRadius;
let y = centerY - Math.sin(i) * this.borderRadius;
path.push([x, y]);
}
path.push([this.x + this.width - this.borderRadius, this.y + this.height]);
path.push([this.x + this.borderRadius, this.y + this.height]);
for (let i = -0.5 * Math.PI; i > -1 * Math.PI; i -= step) {
let centerX = this.x + this.borderRadius;
let centerY = this.y + this.height - this.borderRadius;
let x = centerX + Math.cos(i) * this.borderRadius;
let y = centerY - Math.sin(i) * this.borderRadius;
path.push([x, y]);
}
path.push([this.x, this.y + this.height - this.borderRadius]);
path.push([this.x, this.y + this.borderRadius]);
for (let i = Math.PI; i > Math.PI / 2; i -= step) {
let centerX = this.x + this.borderRadius;
let centerY = this.y + this.borderRadius;
let x = centerX + Math.cos(i) * this.borderRadius;
let y = centerY - Math.sin(i) * this.borderRadius;
path.push([x, y]);
}
return path;
}
draw(parent) {
let pathStr = this.path.map(p => `${p[0]},${p[1]}`).join("L");
let rect = parent.append("path")
.attr("d", `M${pathStr}Z`)
.attr("fill", this.fill)
.attr("stroke", this.stroke)
.attr("stroke-width", this.strokeWidth)
.attr("opacity", this.opacity);
return rect;
}
}
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