javascript – Pixel not the right size on canvas

Exception or error: So my rectangle i want to draw on a canvas are, i think scaled to the size of the canvas. I i want them to be 8×8 they dont come out as 8×8. Here’s my code: function draw() { var canvas = document.getElementById(‘karte’); var ctx = canvas.getContext(“2d”); Stuttgart = ctx.fillRect(10,10,8,8); } .map …

java – Losing AWT DrawingSurface when Canvas is hidden

Questions: I am writing 3d rendering module for an AWT/Swing application. To provide good FPS, I can’t draw using Swing/AWT methods and graphics. Instead, I obtain the Drawing Surface from the Canvas element, and then render directly to it. Something like this: public class Window { private Component canvas; private JAWTDrawingSurface ds; public static final …

html – Is there a way to do SEO with canvas?

Exception or error: Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 hours ago. I want to build my site entirely on canvas element, with PixiJS. But I don’t …

Android Studio Canvas: drawing too large bitmap

Exception or error: I’m running Ubuntu 16.04. And on Android Studio when I try to run my application in the emulator I get the following error: FATAL EXCEPTION: main Process: project name here, PID: 2528 java.lang.RuntimeException: Canvas: trying to draw too large(216090000bytes) bitmap. at android.view.DisplayListCanvas.throwIfCannotDraw(DisplayListCanvas.java:260) at android.graphics.Canvas.drawBitmap(Canvas.java:1415) at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:528) at android.widget.ImageView.onDraw(ImageView.java:1316) at android.view.View.draw(View.java:17185) at android.view.View.updateDisplayListIfDirty(View.java:16167) …

javascript – Changing Pen Color on Canvas after draw

Exception or error: I’m trying to change the color of the contents of the canvas after it is drawn. So if you start drawing a green circle, you could then decide later to make your previously drawn circle into a red a circle. I’m using the signaturePad plugin here: https://github.com/szimek/signature_pad I have some of the …