[Solved] canvas to WebGL [closed]

This just happens to fall into a domain I am catching up on again. Maybe not quite what you want but you can remove all the 2D canvas stuff and just keep the webGL stuff. This demo mixes 2D and 3D canvas interfaces to get high performance GPU processing on 2D canvas content. The fragment … Read more

[Solved] Can’t understand this javascript code to paint HTML canvas? [closed]

Pencil is a class. In JavaScript, class constructors take the form of function MyClass() this is used to point to the class itself, from within the constructor or member functions. Thus, this.mouseup() can be accessed from an instance (in your case) as tool.mouseup() Because that’s the variable your class uses to keep track of the … Read more

[Solved] Python: Add Button via Tkinter

This has nothing to do with your specific Button Code. Indentation Error occur, when your formatting is wrong. your lines always start with a specified number of blanks or tabs (called Indentation). somewhere this went wrong. To get rid of this, check all your Indents in the beginning of your lines. And very important do … Read more

[Solved] How to design a React component similar to WHO Coronavirus Disease (COVID-19) Dashboard? [closed]

First of all, you will need a Chart library like https://d3js.org/ to be enable to plot the graphs. I found D3js to be the most flexible amongst all the libraries. Then you can integrate the data from your database to the plotting methods provided with the library Examples of D3js plots: https://observablehq.com/@d3/bubble-map https://observablehq.com/@d3/spike-map Other Plotting … Read more

[Solved] Make circle on same image [closed]

Html image maps may be the fitting tool. Conceptually the image is superimposed with a set of suitably defined shapes. Each of these shapes (which – assuming a bitmapped image – may be of arbitrary nature) can be associated with a link and an alt text. In the given case, the shapes would be the … Read more

[Solved] Can you draw a google static map to a canvas after you download it?

As i mentioned in comments, You could actually reuse the bitmap. You could also draw on canvas directly for date and time since the datetime bitmap will consume 160000 bytes i.e 156kb. I have not tested the code. This is just a suggestion. class TheTask extends AsyncTask<Void, Void, Bitmap> { File mediaFile = new File(MenuScreen.mediaStorageDir.getPath() … Read more

[Solved] Draw a pin on Canvas using HTML5

Here’s an example of using path commands to draw a pin. Assume you have an object defining the pin’s x,y & color: var pin = { x:x, y:y, color:color }; Then you can draw that pin like this: function drawPin(pin){ ctx.save(); ctx.translate(pin.x,pin.y); ctx.beginPath(); ctx.moveTo(0,0); ctx.bezierCurveTo(2,-10,-20,-25,0,-30); ctx.bezierCurveTo(20,-25,-2,-10,0,0); ctx.fillStyle=pin.color; ctx.fill(); ctx.strokeStyle=”black”; ctx.lineWidth=1.5; ctx.stroke(); ctx.beginPath(); ctx.arc(0,-21,3,0,Math.PI*2); ctx.closePath(); ctx.fillStyle=”black”; … Read more

[Solved] HTML5 Column of Letters [closed]

The steps you need to do are as follows: Iterate each char of the string use fillText (or strokeText) to draw the char at the position you want Increment height for each char. Example var ctx = document.querySelector(“canvas”).getContext(“2d”), // get context of canvas str = “H E L L O”, char, i = 0, len … Read more