Konva Textpath: how does it calculate x and y position
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0
EDIT: there was a bug in the code, so this question is not valid.
I'm trying hard to get Konva.textpath to work. The problem is that the x & y point seems completely random.
There are 3 examples. The green box is placed on the same x/y as the textpath, the red line is the path and all paths (in data) starts at 0,0.
Example 1:
Path: M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
Example 2:
Same path, but with text overflowing. It's not easy to see, but the start of the path is moved about 18px
Example 3:
Path M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
I fail to see any logic to the placement. The expected result would be that x & y of the text should be the start of the text.
These are not some hard to find examples. Every path I try behaves the same.
Thankful for an explanation.
html5-canvas konvajs
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
add a comment |
0
EDIT: there was a bug in the code, so this question is not valid.
I'm trying hard to get Konva.textpath to work. The problem is that the x & y point seems completely random.
There are 3 examples. The green box is placed on the same x/y as the textpath, the red line is the path and all paths (in data) starts at 0,0.
Example 1:
Path: M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
Example 2:
Same path, but with text overflowing. It's not easy to see, but the start of the path is moved about 18px
Example 3:
Path M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
I fail to see any logic to the placement. The expected result would be that x & y of the text should be the start of the text.
These are not some hard to find examples. Every path I try behaves the same.
Thankful for an explanation.
html5-canvas konvajs
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04
add a comment |
0
0
0
EDIT: there was a bug in the code, so this question is not valid.
I'm trying hard to get Konva.textpath to work. The problem is that the x & y point seems completely random.
There are 3 examples. The green box is placed on the same x/y as the textpath, the red line is the path and all paths (in data) starts at 0,0.
Example 1:
Path: M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
Example 2:
Same path, but with text overflowing. It's not easy to see, but the start of the path is moved about 18px
Example 3:
Path M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
I fail to see any logic to the placement. The expected result would be that x & y of the text should be the start of the text.
These are not some hard to find examples. Every path I try behaves the same.
Thankful for an explanation.
html5-canvas konvajs
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
EDIT: there was a bug in the code, so this question is not valid.
I'm trying hard to get Konva.textpath to work. The problem is that the x & y point seems completely random.
There are 3 examples. The green box is placed on the same x/y as the textpath, the red line is the path and all paths (in data) starts at 0,0.
Example 1:
Path: M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
Example 2:
Same path, but with text overflowing. It's not easy to see, but the start of the path is moved about 18px
Example 3:
Path M0,0c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0
I fail to see any logic to the placement. The expected result would be that x & y of the text should be the start of the text.
These are not some hard to find examples. Every path I try behaves the same.
Thankful for an explanation.
html5-canvas konvajs
html5-canvas konvajs
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
edited Nov 20 '18 at 13:15
Krillko
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
asked Nov 16 '18 at 13:43
KrillkoKrillko
96111
96111
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04
add a comment |
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04
add a comment |
1 Answer
1
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If I understand your question, you are saying that the if you set the co-ords of the small green rectangle to the same (x,y) as the first point in the path then the position does not match the start of the path.
Here is a snippet of code with which I am trying to confirm your result but for me the pink rectangle is placed where it should be.
What other code do you have? Maybe an offset is being applied, or maybe a group ? It seems unlikely that your path starts at stage(0,0) because that would see some clipping of the letter 'L' which would draw partially off the stage.
Conclusion: more info required to repro the issue, or double check your code?
// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
add a comment |
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1 Answer
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If I understand your question, you are saying that the if you set the co-ords of the small green rectangle to the same (x,y) as the first point in the path then the position does not match the start of the path.
Here is a snippet of code with which I am trying to confirm your result but for me the pink rectangle is placed where it should be.
What other code do you have? Maybe an offset is being applied, or maybe a group ? It seems unlikely that your path starts at stage(0,0) because that would see some clipping of the letter 'L' which would draw partially off the stage.
Conclusion: more info required to repro the issue, or double check your code?
// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
add a comment |
0
If I understand your question, you are saying that the if you set the co-ords of the small green rectangle to the same (x,y) as the first point in the path then the position does not match the start of the path.
Here is a snippet of code with which I am trying to confirm your result but for me the pink rectangle is placed where it should be.
What other code do you have? Maybe an offset is being applied, or maybe a group ? It seems unlikely that your path starts at stage(0,0) because that would see some clipping of the letter 'L' which would draw partially off the stage.
Conclusion: more info required to repro the issue, or double check your code?
// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
add a comment |
0
0
0
If I understand your question, you are saying that the if you set the co-ords of the small green rectangle to the same (x,y) as the first point in the path then the position does not match the start of the path.
Here is a snippet of code with which I am trying to confirm your result but for me the pink rectangle is placed where it should be.
What other code do you have? Maybe an offset is being applied, or maybe a group ? It seems unlikely that your path starts at stage(0,0) because that would see some clipping of the letter 'L' which would draw partially off the stage.
Conclusion: more info required to repro the issue, or double check your code?
// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
If I understand your question, you are saying that the if you set the co-ords of the small green rectangle to the same (x,y) as the first point in the path then the position does not match the start of the path.
Here is a snippet of code with which I am trying to confirm your result but for me the pink rectangle is placed where it should be.
What other code do you have? Maybe an offset is being applied, or maybe a group ? It seems unlikely that your path starts at stage(0,0) because that would see some clipping of the letter 'L' which would draw partially off the stage.
Conclusion: more info required to repro the issue, or double check your code?
// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>// Set up the canvas / stage
var stage = new Konva.Stage({container: 'container1', width: 600, height: 300});
// Add a layer for line
var layer = new Konva.Layer({draggable: false});
stage.add(layer);
// draw a path.
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
});
layer.add(path)
var dot = new Konva.Rect({x: 0, y: 0, width: 20, height: 20, fill: 'magenta' });
layer.add(dot);
var path = new Konva.Path({
x: 0,
y: 0,
stroke: 'cyan'
})
layer.add(path);
var textpath = new Konva.TextPath({
x: 0,
y: 0,
fill: '#333',
fontSize: 32,
fontFamily: 'Arial',
text: 'Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum Lorem ipsum'
});
layer.add(textpath);
stage.draw()
$('#path1').on('click', function(){
var data = "M20,20c138.1,0,250,111.9,250,250S138.1,500,0,500s-250-111.9-250-250S-138.1,0,0,0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path2').on('click', function(){
var data = "M 120 20 a 100 100 0 1 0 0.00001 0";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path3').on('click', function(){
var data = "M200 200 S 200.5 200 201.1 200.2 201.5 200.4 202 200.7 202.4 201.1 202.8 201.5 203.1 202.1 203.3 202.7 203.5 203.3 203.6 204 203.5 204.7 203.4 205.4 203.2 206.1 202.9 206.9 202.5 207.6 201.9 208.3 201.3 209 200.6 209.6 199.8 210.1 198.9 210.6 197.9 211 196.8 211.3 195.7 211.5 194.6 211.6 193.3 211.5 192.1 211.4 190.8 211.1 189.6 210.7 188.3 210.1 187.1 209.4 185.9 208.6 184.7 207.6 183.6 206.5 182.6 205.2 181.7 203.9 181 202.4 180.3 200.8 179.8 199.2 179.4 197.4 179.1 195.6 179.1 193.7 179.2 191.8 179.5 189.8 179.9 187.8 180.6 185.9 181.4 184 182.5 182.1 183.7 180.3 185.1 178.5 186.7 176.9 188.4 175.4 190.3 174 192.4 172.8 194.6 171.7 196.9 170.8 199.4 170.1 201.9 169.7 204.5 169.4 207.2 169.4 209.9 169.6 212.6 170 215.3 170.7 218 171.6 220.6 172.8 223.2 174.2 225.7 175.9 228 177.8 230.2 179.9 232.2 182.3 234.1 184.8 235.8 187.5 237.2 190.5 238.4 193.5 239.3 196.7 240 200 240.4 203.4 240.5 206.8 240.3 210.3 239.8 213.9 239 217.4 237.9 220.8 236.4 224.2 234.7 227.5 232.7 230.7 230.3 233.7 227.7 236.5 224.9 239.2 221.7 241.6 218.4 243.8 214.8 245.7 211.1 247.3 207.2 248.5 203.1 249.5 199 250.1 194.7 250.4 190.4 250.3 186.1 249.8 181.8 249 177.5 247.8 173.3 246.2 169.3 244.2 165.3 241.9 161.6 239.2 158 236.2 154.7 232.9 151.6 229.3 148.9 225.4 146.4 221.2 144.3 216.8 142.6 212.2 141.3 207.4 140.3 202.5 139.8 197.5 139.7 192.4 140 187.2 140.8 182.1 142 177 143.6 172 145.7 167.1 148.2 162.4 151.1 157.8 154.5 153.5 158.2 149.5 162.3 145.7 166.7 142.3 171.4 139.2 176.4 136.5 181.6 134.2 187.1 132.4 192.8 131 198.5 130.1 204.4 129.7 210.4 129.8 216.3 130.4 222.2 131.5 228.1 133.1 233.9 135.2 239.4 137.9 244.8 141 250 144.5 254.8 148.5 259.4 153 263.5 157.8 267.3 163 270.6 168.5 273.5 174.4 275.9 180.5 277.8 186.8 279.2 193.4 280 200 280.3 206.7 279.9 213.5 279 220.3 277.6 227 275.5 233.6 272.9 240.1 269.7 246.3 266 252.3 261.8 258 257.1 263.4 251.9 268.4 246.3 272.9 240.3 277 233.9 280.6 227.2 283.7 220.2 286.2 213 288.1 205.6 289.4 198.1 290.1 190.5 290.2 182.9 289.6 175.3 288.4 167.8 286.5 160.5 284 153.3 280.8 146.4 277.1 139.8 272.7 133.6 267.8 127.7 262.4 122.3 256.4 117.4 250 113.1 243.2 109.3 235.9 106.1 228.4 103.5 220.5 101.6 212.4 100.4 204.2 99.8 195.8 100 187.4 100.9 178.9 102.5 170.6 104.8 162.3 107.8 154.2 111.5 146.4 115.9 138.9 120.9 131.7 126.5 124.9 132.7 118.6 139.4 112.8 146.7 107.6 154.4 103 162.4 99 170.9 95.7 179.6 93.1 188.6 91.3 197.7 90.2 206.9 89.8 216.2 90.3 225.5 91.5 234.6 93.5 243.6 96.3 252.4 99.8 260.9 104.1 269 109.1 276.7 114.8 284 121.1 290.7 128.1 296.8 135.7 302.4 143.7 307.2 152.3 311.3 161.2 314.7 170.6 317.3 180.2 319 190 320 200 320.1 210.1 319.4 220.2 317.8 230.2 315.3 240.2 312.1 249.9 308 259.4 303.1 268.5 297.4 277.2 291 285.4 283.9 293.1 276.1 300.3 267.7 306.7 258.8 312.5 249.4 317.5 239.6 321.7 229.4 325.1 218.9 327.7 208.1 329.3 197.3 330.1 186.3 330 175.4 328.9 164.6 326.9 153.9 324 143.5 320.2 133.3 315.5 123.6 309.9 114.3 303.6 105.6 296.4 97.5 288.5 90 279.9 83.2 270.7 77.2 260.9 72.1 250.7 67.8 239.9 64.4 228.8 61.9 217.4 60.4 205.9 59.9 194.1 60.3 182.4 61.8 170.6 64.2 159 67.6 147.6 72 136.4 77.3 125.7 83.5 115.4 90.6 105.6 98.5 96.4 107.2 87.8 116.6 80 126.7 73 137.3 66.8 148.5 61.5 160.1 57.2 172.1 53.8 184.4 51.5 196.9 50.2 209.4 49.9 222 50.7 234.6 52.5 247 55.4 259.1 59.4 270.9 64.4 282.3 70.3 293.2 77.2 303.5 85.1 313.1 93.8 322 103.3 330.2 113.5 337.4 124.5 343.7 136 349.1 148.1 353.4 160.6 356.7 173.5 358.9 186.7 358.9 186.7";
textpath.setData(data);
path.setData(data);
var pt = path.getPointAtLength(0);
dot.position({x: pt.x, y: pt.y});
layer.draw();
})
$('#path1').trigger('click');<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/konva/2.5.1/konva.min.js"></script>
<div >
<button id='path1'>Path 1</button>
<button id='path2'>Path 2</button>
<button id='path3'>Path 3</button>
</div>
<div id='container1' style="width: 300px, height: 200px; background-color: silver; margin:10px;padding:10px;"></div>
<div id='img'></div>answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
edited Nov 16 '18 at 15:16
answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
answered Nov 16 '18 at 14:20
Vanquished WombatVanquished Wombat
3,96011439
3,96011439
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
add a comment |
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
Hello. Thanks for giving it a try. I've did some more test myself but it seems like the error is in another part of my code that recalculates the offset to rotate around center of konva object. It's possibly a bug there in my code, and it hasn't been discovered because it never encountered Textpath before.
– Krillko
Nov 16 '18 at 14:48
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
That's life in coding. If it helps, there's a function here for changing the offset but NOT the position of a Konvajs group.
– Vanquished Wombat
Nov 16 '18 at 15:14
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
So, I found the problem, another method calculated the centerpoint and changed the offset. It's been there forever so I forgot about it, it works on text, shape, group, images etc, but not on textpath.
– Krillko
Nov 20 '18 at 13:13
add a comment |
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StackExchange.helpers.onClickDraftSave('#login-link');
});
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StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Can you post your exact path code for each case please. I am trying to repro the issue and want to make it a fair match.
– Vanquished Wombat
Nov 16 '18 at 14:04