All previous shapes show up while adding another shape in konvajs
I'm facing an issue with konvajs. I am able to draw things and they save all fine to be played with the end video.
However, Let's say I pause the video at 0:30 to add a circle and save it, and then I want to add another shape at 01:30, as soon as I start adding another shape the circle I added before also shows up on screen. So everytime I try and add a shape, I can see all the previous shapes on the screen.
Note: Problem is in adding the shapes, the end video plays fine (circle at 0:30 and another shape at 01:30). Is there any event that I can call to avoid this? Any help will be appreciated.
annotations html5-canvas video-processing konvajs
asked Nov 21 at 7:01
Jagatveer Singh
115110
add a comment |
I'm facing an issue with konvajs. I am able to draw things and they save all fine to be played with the end video.
However, Let's say I pause the video at 0:30 to add a circle and save it, and then I want to add another shape at 01:30, as soon as I start adding another shape the circle I added before also shows up on screen. So everytime I try and add a shape, I can see all the previous shapes on the screen.
Note: Problem is in adding the shapes, the end video plays fine (circle at 0:30 and another shape at 01:30). Is there any event that I can call to avoid this? Any help will be appreciated.
annotations html5-canvas video-processing konvajs
asked Nov 21 at 7:01
Jagatveer Singh
115110
Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47
add a comment |
I'm facing an issue with konvajs. I am able to draw things and they save all fine to be played with the end video.
However, Let's say I pause the video at 0:30 to add a circle and save it, and then I want to add another shape at 01:30, as soon as I start adding another shape the circle I added before also shows up on screen. So everytime I try and add a shape, I can see all the previous shapes on the screen.
Note: Problem is in adding the shapes, the end video plays fine (circle at 0:30 and another shape at 01:30). Is there any event that I can call to avoid this? Any help will be appreciated.
annotations html5-canvas video-processing konvajs
asked Nov 21 at 7:01
Jagatveer Singh
115110
I'm facing an issue with konvajs. I am able to draw things and they save all fine to be played with the end video.
However, Let's say I pause the video at 0:30 to add a circle and save it, and then I want to add another shape at 01:30, as soon as I start adding another shape the circle I added before also shows up on screen. So everytime I try and add a shape, I can see all the previous shapes on the screen.
Note: Problem is in adding the shapes, the end video plays fine (circle at 0:30 and another shape at 01:30). Is there any event that I can call to avoid this? Any help will be appreciated.
annotations html5-canvas video-processing konvajs
annotations html5-canvas video-processing konvajs
asked Nov 21 at 7:01
Jagatveer Singh
115110
asked Nov 21 at 7:01
Jagatveer Singh
115110
asked Nov 21 at 7:01
Jagatveer Singh
115110
asked Nov 21 at 7:01
Jagatveer Singh
115110
asked Nov 21 at 7:01
Jagatveer Singh
115110
115110
Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47
add a comment |
Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47
Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47
add a comment |
1 Answer
1
active
oldest
votes
When you add a shape into the layer, you just need to hide/remove previous shapes.
You can do something like this:
oldShape.destroy();
// or remove all previous shapes
layer.destroyChildren();
// then
layer.add(newShape);
layer.draw();
answered Nov 21 at 13:38
lavrton
7,19221231
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
votes
active
oldest
votes
When you add a shape into the layer, you just need to hide/remove previous shapes.
You can do something like this:
oldShape.destroy();
// or remove all previous shapes
layer.destroyChildren();
// then
layer.add(newShape);
layer.draw();
answered Nov 21 at 13:38
lavrton
7,19221231
add a comment |
When you add a shape into the layer, you just need to hide/remove previous shapes.
You can do something like this:
oldShape.destroy();
// or remove all previous shapes
layer.destroyChildren();
// then
layer.add(newShape);
layer.draw();
answered Nov 21 at 13:38
lavrton
7,19221231
add a comment |
When you add a shape into the layer, you just need to hide/remove previous shapes.
You can do something like this:
oldShape.destroy();
// or remove all previous shapes
layer.destroyChildren();
// then
layer.add(newShape);
layer.draw();
answered Nov 21 at 13:38
lavrton
7,19221231
When you add a shape into the layer, you just need to hide/remove previous shapes.
You can do something like this:
oldShape.destroy();
// or remove all previous shapes
layer.destroyChildren();
// then
layer.add(newShape);
layer.draw();
answered Nov 21 at 13:38
lavrton
7,19221231
answered Nov 21 at 13:38
lavrton
7,19221231
answered Nov 21 at 13:38
lavrton
7,19221231
answered Nov 21 at 13:38
lavrton
7,19221231
7,19221231
add a comment |
add a comment |
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Please post a Minimal, Complete, and Verifiable example of your issue. Do not link to full code elsewhere as such links are liable to break over time. You are asking busy experts to invest their time to help you - respect this and explain your issue clearly. As well-meant advice, it is most likely that this is a bug of your own making as Konvajs generally works fine.
– Vanquished Wombat
Nov 21 at 9:45
@VanquishedWombat That was meant to give details, not waste anyone's time. Hope the following is worth answering? Even if I call to hide or reduce the opacity to 0 while adding another object. How do I avoid saving visibility change?? Or can you recommend another alternate for videos to handle this UX challenge in a better way?
– Jagatveer Singh
Nov 21 at 9:56
How are you saving the canvas contents?
– Vanquished Wombat
Nov 21 at 9:59
I get element data in the canvas and save it directly, this is why I got the thought that it might try to capture the hide or opacity change too :/ small gist if you want to have a look gist.github.com/Jagatveer/318c6ff3643d7bbd15b3749c03796f2f
– Jagatveer Singh
Nov 21 at 10:34
Overall, canvas has no timeline - you will need to handle the show/hide yourself.
– Vanquished Wombat
Nov 21 at 10:47