application de respiration animée circulaire d3 js voyageant sur un chemin circulaire

d3 js application de respiration animée

Je veux pouvoir créer une animation d'un cercle qui tourne autour d'un chemin à un intervalle de temps spécifique, et pouvoir contrôler cet intervalle pour accélérer/ralentir.

Mon code ressemble actuellement à ceci. Comment définir un cercle pour qu'il se déplace le long d'un chemin circulaire - et même demander au cercle parent lui-même de "respirer" et d'expirer

27 juillet 2023 - Base actuelle

<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.13.0/d3.min.js"></script>
<html>
    <head>
        <title>multibar d3</title>
        <script src="https://d3js.org/d3.v4.min.js" charset="utf-8"></script>
        <style>
            
        </style>
    </head>
    <body>



        <script>

        var width = 960;
        var height = 600;

        var margin = {top: 20, right: 5, bottom: 30, left: 20};

                var svg = d3.select("body")
                    .append("svg")
                    .attr("width", width + margin.left + margin.right)
                    .attr("height", height + margin.top + margin.bottom)
                    .append("g")
                    .attr('class', 'circleorbits')
                    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");


        var originX = 200;
        var originY = 200;
        var innerCircleRadius = 40;
        var outerCircleRadius = 60;

        /*
        var table = svg.append("circle").attr({
            cx: originX,
            cy: originY,
            r: 40,
            fill: "white",
            stroke: "black"
        });
        */

        var group = svg.append("g");

        var outerCircle = svg.append("circle")
            .attr("cx", originX)
            .attr("cy", originY)
            .attr("opacity", 0)
            .attr("r", outerCircleRadius)
            .attr("fill", "none")
            .attr("stroke", "black");

//console.log("outerCircle", outerCircle);
        var chairOriginX = originX + ((60) * Math.sin(0));
        var chairOriginY = originY - ((60) * Math.cos(0));

        var pointOnOuterCircle = svg.append("circle")
             .attr("cx", chairOriginX)
             .attr("cy", chairOriginY)
             .attr("opacity", 0)
             .attr("r", 5)
             .attr("fill", "black");
//console.log("pointOnOuterCircle", pointOnOuterCircle);
        /*
        var chairWidth = 20;
        var chair = svg.append("rect").attr({
            x: chairOriginX - (chairWidth / 2),
            y: chairOriginY - (chairWidth / 2),
            width: chairWidth,
            opacity: 0,
            height: 20,
            fill: "none",
            stroke: "blue"
        });
        */

        // ANIMATIONS


        // drawing outer circle
        outerCircle.transition().delay(500).duration(500).style("opacity", 1);

        // drawing point on outer circle
        pointOnOuterCircle.transition().delay(1000).duration(500).style("opacity", 1);

        // drawing chair on the point
        //chair.transition().delay(1500).duration(500).style("opacity", 1);

        // rotating the chair
        var tween = function (d, i, a) {
            return d3.interpolateString("rotate(0, 200, 200)", "rotate(360, 200, 200)");
        }


        var duration = 5000;

        //chair.transition().delay(2000).duration(500).attrTween("transform", tween);
        pointOnOuterCircle.transition().delay(2000).duration(duration).attrTween("transform", tween);

        // fading out the intermediate objects
        //pointOnOuterCircle.transition().delay(4000).duration(500).style("opacity", 0);
        //outerCircle.transition().delay(4000).duration(500).style("opacity", 0);

        function newLoop(){
            pointOnOuterCircle.transition().delay(2000).duration(5000).attrTween("transform", tween);
        }

        setInterval(newLoop, duration);



        </script>



    </body>
</html>

svg = d3.create("svg");

var circle = svg
    .append("circle")
    .attr("cx", 150)
    .attr("cy", 75)
    .attr("r", 50);



circle
    .transition()
    .duration(2000)
    .attr('r', 75);

d3
    .select("#container")
    .append(() => svg.node());



var circle = svg
    .append("circle")
    .attr("cx", 150)
    .attr("cy", 75)
    .attr("r", 50);

<!DOCTYPE html>
<meta charset="utf-8">
<body>
<style>

path {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}

circle {
  fill: steelblue;
  stroke: #fff;
  stroke-width: 3px;
}

</style>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>

var points = [
  [480, 200],
  [580, 400],
  [680, 100],
  [780, 300],
  [180, 300],
  [280, 100],
  [380, 400]
];

var svg = d3.select("body").append("svg")
    .attr("width", 960)
    .attr("height", 500);

var path = svg.append("path")
    .data([points])
    .attr("d", d3.svg.line()
    .tension(0) // Catmull–Rom
    .interpolate("cardinal-closed"));

svg.selectAll(".point")
    .data(points)
  .enter().append("circle")
    .attr("r", 4)
    .attr("transform", function(d) { return "translate(" + d + ")"; });

var circle = svg.append("circle")
    .attr("r", 13)
    .attr("transform", "translate(" + points[0] + ")");

transition();

function transition() {
  circle.transition()
      .duration(10000)
      .attrTween("transform", translateAlong(path.node()))
      .each("end", transition);
}

// Returns an attrTween for translating along the specified path element.
function translateAlong(path) {
  var l = path.getTotalLength();
  return function(d, i, a) {
    return function(t) {
      var p = path.getPointAtLength(t * l);
      return "translate(" + p.x + "," + p.y + ")";
    };
  };
}

</script>

P粉191610580371 Il y a quelques jours512

application de respiration animée circulaire d3 js voyageant sur un chemin circulaire

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