How to draw curved arrows in canvas android


Zheng Xian

I have this code that draws the arrow tail between 2 points, but how should I draw the curve for the arrow tail?

canvas.drawLine(pt1[X], pt1[Y], pt2[X], pt2[Y], paint);//draw line

I want something like this where the arrows are dynamic

enter image description here

Ted Hope

Depending on the shape of the curve you want, that can be used , but it's limited to the oval part that's aligned with the axis of the screen.Canvas.drawArc()

For a more general approach, define the curve as a , which is then used to render it to the canvas. A can consist of any number of straight, quadratic, and cubic segments. ( See the documentation for how to construct what you want .) For solid arrow tails, Paint should be styled when called .PathCanvas.drawPath()PathPathFILLdrawPath()

Related


How to draw curved arrows with CreateJS?

graphics problem The JavaScript code for drawing the curved arrow is already in this fiddle : http://jsfiddle.net/SguzM/ I want to do the same thing using CreateJS library. The fiddle code above is as follows: var can = document.getElementById('canvas1'); var

How to draw curved arrows with CreateJS?

graphics problem The JavaScript code for drawing the curved arrow is already in this fiddle : http://jsfiddle.net/SguzM/ I want to do the same thing using CreateJS library. The code from the fiddle above is as follows: var can = document.getElementById('canvas

How to draw curved arrows with CreateJS?

graphics problem The JavaScript code for drawing the curved arrow is already in this fiddle : http://jsfiddle.net/SguzM/ I want to do the same thing using CreateJS library. The code from the fiddle above is as follows: var can = document.getElementById('canvas

How to draw arrows on canvas with mouse

pawan Recently I started playing with the canvas element. Now I can draw lines (any number) on the canvas with the mouse. You can see it in the following code : http://jsfiddle.net/saipavan579/a6L3ka8p/ . var ctx = tempcanvas.getContext('2d'), mainctx = canvas

How to draw arrows on canvas with mouse

pawan Recently I started playing with the canvas element. Now I can draw lines (any number) on the canvas with the mouse. You can see it in the following code : http://jsfiddle.net/saipavan579/a6L3ka8p/ . var ctx = tempcanvas.getContext('2d'), mainctx = canvas

How to draw arrows on canvas with mouse

pawan Recently I started playing with the canvas element. Now I can draw lines (any number) on the canvas with the mouse. You can see it in the following code : http://jsfiddle.net/saipavan579/a6L3ka8p/ . var ctx = tempcanvas.getContext('2d'), mainctx = canvas

How to draw arrows on canvas with mouse

pawan Recently I started playing with the canvas element. Now I can draw lines (any number) on the canvas with the mouse. You can see it in the following code : http://jsfiddle.net/saipavan579/a6L3ka8p/ . var ctx = tempcanvas.getContext('2d'), mainctx = canvas

How to draw arrows (in Android)?

StartingGroovy: I'm new to Android and have been playing with Canvas. I'm trying to draw arrows, but I'm having no luck drawing the axes, none of the arrows are working. I did some searching and found a Java example, but there is no GeneralPathor for Android A

How to draw arrows (in Android)?

StartingGroovy: I'm new to Android and have been playing with Canvas. I'm trying to draw arrows, but I'm having no luck drawing the axes, none of the arrows are working. I did some searching and found a Java example, but there is no GeneralPathor for Android A

How to draw arrows (in Android)?

StartingGroovy: I'm new to Android and have been playing with Canvas. I'm trying to draw arrows, but I'm having no luck drawing the axes, none of the arrows are working. I did some searching and found a Java example, but there is no GeneralPathor for Android A

How to draw curved shadows?

Ilutov like this: I know this doesn't work NSShadow, drawRect:plugging it in does the trick. David Rönnqvist You can use Core Animations layers and shadowPathproperties to do this and many other types of shadows . The shadow you describe can be generated by an

How to draw "curved" lines?

Daniel The problem is simple, as the title says. Tizen's documentation is really unreliable on this topic (among others). For example, as they describe here : Draw SVG paths. You can use the api in efl_gfx_utils.h to construct the path ... efl_gfx_path_append_

How to draw "curved" lines?

Daniel The problem is simple, as the title says. Tizen's documentation is really unreliable on this topic (among others). For example, as they describe here : Draw SVG paths. You can use the api in efl_gfx_utils.h to construct the path ... efl_gfx_path_append_

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Canvas draw dotted lines with arrows

Tommy I am using the following code to draw lines with arrows. My problem is that I want to make the dashed line dashed instead of the arrow top: function canvas_arrow_alternate2(context, fromx, fromy, tox, toy){ var headlen = 12; // length of head in pi

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Draw arrows in canvas using Angle

Gunaseran I tried to use the following code, but this code is not working. Actually, I was hesitant to ask for help with this simple solution, but I wasted a lot of time and I ended up here. deltaX = bounds.right - bounds.left; deltaY = bounds.bottom - bounds.

Canvas draw dotted lines with arrows

Tommy I am using the following code to draw lines with arrows. My problem is that I want to make the dashed line dashed instead of the arrow top: function canvas_arrow_alternate2(context, fromx, fromy, tox, toy){ var headlen = 12; // length of head in pi

Draw a shape along a curved path in the canvas

living I've been doing some googling and can't find an answer (I think I'm asking the wrong question), but I'm wondering if it's possible to draw a set of objects along a path. For example, is it possible to use quadraticCurveTo() to draw a path and then draw

Draw a shape along a curved path in the canvas

living I've been doing some googling and can't find an answer (I think I'm asking the wrong question), but I'm wondering if it's possible to draw a set of objects along a path. For example, is it possible to use quadraticCurveTo() to draw a path and then draw

How to draw polyline on canvas in android?

Ike Israel: I've been trying to draw polylines on canvas. There are no errors in my code, but the order of the connected line segments is not shown. Please find the code snippet below; import android.content.Context; import android.graphics.Canvas; import andr

How to draw polyline on canvas in android?

Ike Israel: I've been trying to draw polylines on canvas. There are no errors in my code, but the order of the connected line segments is not shown. Please find the code snippet below; import android.content.Context; import android.graphics.Canvas; import andr

Xamarin Android: How to draw on Canvas

Giovanni I'm working on it Xamarin.Forms. I'm overriding the class ImageRendererto make some adjustments to the image. However, I want to cover some parts of the image with circles, so I override the method void OnDraw(Canvas canvas). Then I modified it Canvas

How to draw polyline on canvas in android?

Ike Israel: I've been trying to draw polylines on canvas. There are no errors in my code, but the order of the connected line segments is not shown. Please find the code snippet below; import android.content.Context; import android.graphics.Canvas; import andr

How to draw polyline on canvas in android?

Ike Israel: I've been trying to draw polylines on canvas. There are no errors in my code, but the order of the connected line segments is not shown. Please find the code snippet below; import android.content.Context; import android.graphics.Canvas; import andr