How to keep the circle, stroke and font size when zooming in d3.js V4 layout?

I'm using d3.v4.js to draw my layout. And I need to limit the circle, stroke and font size to a maximized value when zooming in.

Here's an example that implements what I want, but it's in d3.v3.js.

http://bl.ocks.org/eyaler/10586116

I don't know how to implement this in d3.v4.js. Can anybody help me? Thanks.

asked Nov 21 '18 at 13:21

Yang Luo

8561437

with zoom.scaleExtent([extent]) you can limit the maximum zoom scale, if you want to draw all at a constant size while zoom you must modify the attributes based on the current scale

– rioV8
Nov 21 '18 at 13:33

add a comment |

I'm using d3.v4.js to draw my layout. And I need to limit the circle, stroke and font size to a maximized value when zooming in.

Here's an example that implements what I want, but it's in d3.v3.js.

http://bl.ocks.org/eyaler/10586116

I don't know how to implement this in d3.v4.js. Can anybody help me? Thanks.

asked Nov 21 '18 at 13:21

Yang Luo

8561437

with zoom.scaleExtent([extent]) you can limit the maximum zoom scale, if you want to draw all at a constant size while zoom you must modify the attributes based on the current scale

– rioV8
Nov 21 '18 at 13:33

add a comment |

I'm using d3.v4.js to draw my layout. And I need to limit the circle, stroke and font size to a maximized value when zooming in.

Here's an example that implements what I want, but it's in d3.v3.js.

http://bl.ocks.org/eyaler/10586116

I don't know how to implement this in d3.v4.js. Can anybody help me? Thanks.

asked Nov 21 '18 at 13:21

Yang Luo

8561437

I'm using d3.v4.js to draw my layout. And I need to limit the circle, stroke and font size to a maximized value when zooming in.

Here's an example that implements what I want, but it's in d3.v3.js.

http://bl.ocks.org/eyaler/10586116

I don't know how to implement this in d3.v4.js. Can anybody help me? Thanks.

d3.js

asked Nov 21 '18 at 13:21

Yang Luo

8561437

asked Nov 21 '18 at 13:21

Yang Luo

8561437

asked Nov 21 '18 at 13:21

Yang Luo

8561437

asked Nov 21 '18 at 13:21

Yang Luo

8561437

asked Nov 21 '18 at 13:21

Yang Luo

8561437

with zoom.scaleExtent([extent]) you can limit the maximum zoom scale, if you want to draw all at a constant size while zoom you must modify the attributes based on the current scale

– rioV8
Nov 21 '18 at 13:33

add a comment |

with zoom.scaleExtent([extent]) you can limit the maximum zoom scale, if you want to draw all at a constant size while zoom you must modify the attributes based on the current scale

– rioV8
Nov 21 '18 at 13:33

with zoom.scaleExtent([extent]) you can limit the maximum zoom scale, if you want to draw all at a constant size while zoom you must modify the attributes based on the current scale

– rioV8
Nov 21 '18 at 13:33

add a comment |

1 Answer
1

active

oldest

votes

One way I can think of is applying a "counter-scale" on the nodes when zooming.

When you zoom, a scale transformation is applied to the <g> wrapper node that is direct child of the svg node.

Let MAX_SCALE be the max scale you want to be applied on the nodes.
Let currentScale the scale that's applied with the current zoom.

if (currentScale > MAX_SCALE), apply the "counter-scale" on the nodes (let's admit they are tagged with a "limit-scale" class):

d3.selectAll(".limit-scale").attr("transform", "scale(" + (MAX_SCALE/currentScale) + ")");

The same logic can be applied to stroke and font-size styles.

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

One way I can think of is applying a "counter-scale" on the nodes when zooming.

When you zoom, a scale transformation is applied to the <g> wrapper node that is direct child of the svg node.

Let MAX_SCALE be the max scale you want to be applied on the nodes.
Let currentScale the scale that's applied with the current zoom.

if (currentScale > MAX_SCALE), apply the "counter-scale" on the nodes (let's admit they are tagged with a "limit-scale" class):

d3.selectAll(".limit-scale").attr("transform", "scale(" + (MAX_SCALE/currentScale) + ")");

The same logic can be applied to stroke and font-size styles.

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

add a comment |

One way I can think of is applying a "counter-scale" on the nodes when zooming.

When you zoom, a scale transformation is applied to the <g> wrapper node that is direct child of the svg node.

Let MAX_SCALE be the max scale you want to be applied on the nodes.
Let currentScale the scale that's applied with the current zoom.

if (currentScale > MAX_SCALE), apply the "counter-scale" on the nodes (let's admit they are tagged with a "limit-scale" class):

d3.selectAll(".limit-scale").attr("transform", "scale(" + (MAX_SCALE/currentScale) + ")");

The same logic can be applied to stroke and font-size styles.

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

add a comment |

One way I can think of is applying a "counter-scale" on the nodes when zooming.

When you zoom, a scale transformation is applied to the <g> wrapper node that is direct child of the svg node.

Let MAX_SCALE be the max scale you want to be applied on the nodes.
Let currentScale the scale that's applied with the current zoom.

if (currentScale > MAX_SCALE), apply the "counter-scale" on the nodes (let's admit they are tagged with a "limit-scale" class):

d3.selectAll(".limit-scale").attr("transform", "scale(" + (MAX_SCALE/currentScale) + ")");

The same logic can be applied to stroke and font-size styles.

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

One way I can think of is applying a "counter-scale" on the nodes when zooming.

When you zoom, a scale transformation is applied to the <g> wrapper node that is direct child of the svg node.

Let MAX_SCALE be the max scale you want to be applied on the nodes.
Let currentScale the scale that's applied with the current zoom.

if (currentScale > MAX_SCALE), apply the "counter-scale" on the nodes (let's admit they are tagged with a "limit-scale" class):

d3.selectAll(".limit-scale").attr("transform", "scale(" + (MAX_SCALE/currentScale) + ")");

The same logic can be applied to stroke and font-size styles.

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

edited Nov 21 '18 at 16:57

answered Nov 21 '18 at 14:45

Zim

1,0741817

answered Nov 21 '18 at 14:45

Zim

1,0741817

answered Nov 21 '18 at 14:45

Zim

1,0741817

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

add a comment |

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

That's just how it works. But I just didn't know how to write the code. Finally I managed to port: bl.ocks.org/eyaler/10586116 to d3.v4.js

– Yang Luo
Nov 22 '18 at 3:32

add a comment |

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