Function layoutWords

cy/cy.ts:264–298

(ctx: CanvasContext, words: WordItem[])

}

function layoutWords(ctx: CanvasContext, words: WordItem[]): WordItem[] {
  const placed: WordItem[] = [];
  const centerX = WIDTH / 2;
  const centerY = HEIGHT / 2 - 28;
  for (const original of words) {
    const item = { ...original };
    ctx.font = `700 ${item.size}px ${CJK_FONT_STACK}`;
    const metrics = ctx.measureText(item.word);
    item.width = metrics.width;
    item.height = item.size;
    if (item.width > WIDTH - MARGIN * 2) continue;

    for (let attempt = 0; attempt < 4; attempt++) {
      item.size = Math.max(10, original.size - attempt * 4);
      ctx.font = `700 ${item.size}px ${CJK_FONT_STACK}`;
      const nextMetrics = ctx.measureText(item.word);
      item.width = nextMetrics.width;
      item.height = item.size;
      let placedItem = false;
      for (let t = 0; t < 3600; t++) {
      const angle = t * 0.38;
      const radius = 5.2 * Math.sqrt(t);
      item.x = centerX + Math.cos(angle) * radius - item.width / 2;
      item.y = centerY + Math.sin(angle) * radius + item.height / 2;
      if (item.x < MARGIN || item.y < MARGIN + item.height || item.x + item.width > WIDTH - MARGIN || item.y > HEIGHT - 78) continue;
      if (overlaps(item, placed)) continue;
      placed.push({ ...item });
      placedItem = true;
      break;
      }
      if (placedItem) break;
    }
  }
  return placed;
}

function renderWordCloud(words: WordItem[], limit: number, validMessages: number): Buffer {
  ensureCjkFont();