I want to draw both rectangle and square using same var rectangle in my program. I have modified the function to draw square, given modeOptions = { "Rectangle", "Square" } what needs to be added below to work for both, rectangle and s...
I'm trying to draw multiple circle arcs filled with different colors          //-------------- draw         ctx.beginPath();         ctx.fillStyle = "black";         ctx.arc(30, 30, 20, 0, Math.PI*2, true);         ctx.fill();         ctx...
i need to draw lines between 2 element on html page  the results should be like this: http://img2.timg.co.il/forums/1_173873919.JPG  i wondered what the best way do this   using canvas and html5 using background image. make by ajax dynamic the image...
This script is endlessly taking memory in all the browsers. I can't see why!   var canvas = document.getElementById("canvas"); var ctx = canvas.getContext("2d"); var particles = [], amount = 5; var x = 100; var y = 100; var W, H;...
I am creating a desktop application using NodeWebKit, sails.js and AngularJS where users can create documents and add flowcharts, diagrams, etc. similar to draw.io and Gliffy.com   which allows user to create flowchart by dragging and dropping from s...
I have to points (x1, x2, y1, y2). How can I draw an image (it's like a rectangle of width 10 and height 100) on a canvas with starting point x1, y1 and rotation degree determined by slope of the line between that two points?  It's like I wan...
I've tried to use the drawImage function of the canvas.  In the documentation (http://msdn.microsoft.com/en-us/library/ie/ff975414(v=vs.85).aspx) I thought the last two parameters are the destination point, but I guess it's not because it'...
I'm writing a simple drawing application in JS that works with coordinates. I need to find the midpoint of two points recursively in order to draw a line(The midpoint between point A and B, and then the two midpoints between the three resulting p...
I'm new to WebGL and was trying to draw a circle with triangle_fan.   I set up the variables  var pi = 3.14159; var x = 2*pi/100; var y = 2*pi/100; var r = 0.05;  points = [ vec2(0.4, 0.8) ]; //establish origin   And then drew the circle using th...
is it possible to do a drawing line and image in React native (like canvas in Android) and make a view like below?   Thanks in advance, any response is appreciated...

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