In fabricjs when we place an object on the canvas and select it, the grapples appear. For rotation there is this grapple which appears at the end.
Is there a way in fabric to hide the rotation grapple and instead have the drag grapples do the rotation as well, like the corner grapples could be used for rotation?
Any customization on this possible?
Thanks in advance.
You can easily customise the handles, see the documentation here http://fabricjs.com/customization/
Related
Is it possible to have the vtkAxesActor small in a corner of the window?
Here is a image of what I currently got and what I would like to have. The colorful axes are the standard axesActor. But I would like the axes in a corner of the window and only there (bottom left in black). They shouldn't move around the window when the view is rotated. Only around their origin.
Is this possible? And if yes, how?
A possible solution is to put the vtkAxesActor into an orientation widget:
widget = vtk.vtkOrientationMarkerWidget()
widget.SetOrientationMarker(axisActor)
widget.SetInteractor(interactor)
widget.SetViewport(0, 0, size, size)
widget.InteractiveOff()
widget.EnabledOn()
The vtkAxesActor location is functional and it's location has a purpose. The anchor point of the AxesActor is the anchor point of the model. This provides context of where any transformations or translations would be calculated from.
Unfortunately the example of the axisActor in the corner you have proposed would only provide context of the orientation of the model and so not part of the standard options.
Our team is working on creating an online collage.
[https://jsfiddle.net/Lfz1bp7r/3/]
Characteristically, the collage should be under the mask of the PNG file. At this stage we are trying different libraries. Attention on fabricJS. The collage scheme is implemented using SVG paths. The first problem was tracking mouse events in SVG pathways. Implemented manually. The main problem is to add a new picture, which should be above the collage but below the mask. Manipulations with globalCompositeOperation do not help. There are no layers in the fabricJS.
So the question is - will the fabricJS allow you to implement the addition of a new picture on top of the collage, but under the PNG mask? It's possible?
Thank you very much in advance!
FabricJS includes two ways to draw on top of the canvas above the standard object and controls layers. You can set an overlayImage, and you can use the after:render event to run additional draw commands on the canvas context. See the Bounding Rectangle demo for a simple example of how to do this.
See How Fabric Canvas Layering Works.
I'm trying to create slidingup animation in android application to change between two view of layout.
I've tried from this tutorial
but the second screen didn't come like what I want.
I want the second layout to come like a wipe animation, like the following picture at the bottom
Refer this:
https://android.googlesource.com/platform/frameworks/base/+/ab51002847ea3dcdc0ba14eb330ab9ec292a9789/packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
In the above code, focus on the animateCollapsePanels method
I was able to implement a similar transition by using a clipping Path. Because I didn't want my transition to rule out the use of Layouts in the clipped view, I implemented the clipping at the Layout level following this answer: Custom Layout that rounds the corners of its content
The clipping is no anti-aliased and you would need to do use instead PorterDuff and XferMode based solutions otherwise, but for a linear wipe animation like you're describing, clipping in the layout will achieve what you want. Basically you're doing a linear reveal whereas the accepted answer I linked does a circular clip.
My goal is to create something like the arrow from car that indicates the speed of the car. My problem is that I do not know what is the best practice for moving the green arrow. I have an image arrow.png and I guess I need to manipulate with the place that the picture is shown and with the rotation of the image.
Can someone point to me some guidelines ?
My basic idea is to have a relative layout for the background and to have one image view that will change the position, but the part changing position is little unclear to me. And I do not think that is good idea to play with layout params and margins...
I would probably extend ImageView then override your onDraw method and use canvas.rotate() to rotate the arrow depending on your app state.
I am working on a SVG application and now want to let a user resize an object using draggable corners, very much like in SVG-edit (http://svg-edit.googlecode.com/svn/trunk/editor/svg-editor.html).
The functionality should work as follows: The user selects an SVG object, drags it to the main ‘canvas’ and once on the ‘canvas’, four corners on the outside of the object appear, the user can drag on each of the corner points & drag to enlarge the object. The objects will be rectangular in shape and created using paths, not using the SVG ‘rect’ function.
Would anyone have any suggestions as to how this should be implemented?
Thanks in Advance
You could take a look at some existing open source implementations. svg-edit is one which you already mentioned.
To showcase a tool that I developed, I wrote a demo which implements this functionality. This which may serve as a simpler and more restrictive example than svg-edit, as it doesn't do too much other than allow you to draw rects and circles, and rotate/translate/scale them.
I have edited jquery to make rect draggable, recently put them in a g and lost this functionality. The g doesn't contain the position data.
Might be possible to bubble down to the children elements.