admin管理员组

文章数量:1355540

My goal is simple, I want to add direction markers on a path (like so). The code that I've implemented gives the result on the initial load.

lineCoords.forEach(coords => {

    for (let i = 1; i < coords.length; i++) {
      const A = (coords[i - 1]);
      const B = (coords[i]);

      const interpolateA = d3.interpolate(A[0], B[0]);
      const interpolateB = d3.interpolate(A[1], B[1]);

      const spacing = 3;
      const distance = Math.hypot(A[0] - B[0], A[1] - B[1]);
      const numPoints = Math.max(1, Math.floor(distance / spacing));
      const range = d3.range(1, numPoints + 1);
      const points = range.map(j => {
        const t = j / (numPoints + 1);
        const interpolatedA = interpolateA(t);
        const interpolatedB = interpolateB(t);

        return [interpolatedA, interpolatedB];
      });

      onewayCoords.push(points);
    }

  })

However, when I zoom the map, the markers form an arc instead of a straight line. Since the code above runs inside the drag event, I don't think that's the issue. I suspect the problem is related to the coordinates not being precise.

If there's a better way to achieve the desired result, please share your insights.

本文标签：

版权声明：本文标题：javascript - D3.js interpolate coordinates between two points forming an arc instead of a straight line - Stack Overflow 内容由网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：http://www.betaflare.com/web/1743977580a2570937.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。