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Questions tagged [line-drawing]

55 questions
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SVG path drawing animation - line drawing with anime.js, how to stop lines from overlapping

I have the following SVG line drawing using anime.js but for some reason the lines seem to overlap during the animation. I have played around with all the settings including removing the loop, changing the direction etc etc but nothing I change…
LeeTee
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How to correct my negative index in the line.new() ? Pinescript

//I'm having problems with the line.new function. I want a line from close to close between 0830-1630, so probably a diagonal... _zoneSession = input(title = "Session", type = input.session, defval = "0830-1630:1234567") _zoneInitialBalanceStop …
Raphaël Vigneault
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How can I draw a ine between the first and last point dynamically

I'm making a program where a user can draw a room roughly, than he/she needs to put in the lengths from the walls and then my program makes a detailed drawing of it in a new canvas. I get all the lines working but only the last line between the…
UveGotToFailToSucceed
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Fast 2D line drawing

Few months ago I coded in C++ a (high quality) zen photon ripoff, and I want to start over from the scratch. Was quite fun and I managed to get some nice results. The biggest performance bottleneck was the line drawing part, since I need to draw…
Martin Jérémie
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How to fill the gaps in an image after thinning?

How can I fill the gaps that occurred as a result of thinning? The first image is the image before thinning, the second one is the image after thinning and the third one is an example of the pixels that I need to connect. I'm using MATLAB R2013a. I…
H. Nagaty
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Is there an efficient Xiaolin Wu's line function with SDL (or an add on)?

I made a program in C++ with SDL2 which draws a curve from a list of points by linking them with lines. I'm using the SDL_RenderDrawLine function, which is based on Bresenham's algorithm, I assume. Then I made an other function based on Xiaolin Wu's…
MacGlory
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Animated glowing SVG line drawing not working across browsers

I'm trying to create an animation that uses SVG filters and the stroke-dasharray approach to create a progressively drawn "glowing" line effect. After quite a bit of research I was able to put together something that sort of works: JSFiddle (the SVG…
Rich
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how to draw a horizontal/vertical line and still have a rectangle for bounds purposes ins C#

I am using this code to create a rectangle: public static Rectangle RectangleFromPoints(Point a, Point b) { return new Rectangle(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y), …
Ludos The Brave
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How to draw a line in SpriteKit efficiently

In my SpriteKit scene, user should be able to draw line with his/her finger. I have a working solution, if the line is long, FPS gets down to 4-6 and the line starts to get polygonal, as the image below: To draw myline (SKShapeNode*), I collect…
ddb
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Flash AS3 drawline displays text

I'm currently working on a nomograph and I was able to create 2 sliders connected with a line, but is there a way to get the line to read the middle numbers kind of like in the example below. I'd need the line to display multiple numbers of the…
Shawn C. Machie
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Drawing a set of parallel lines at various angles for finding the mean intercept length

I am trying to write a code to find the Mean Intercept Length tensor. The mean intercept length tensor will help me find the orientation of a given image. For that I need to create a set of parallel sample lines equidistant from each other filling…
JOY
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ANSI commands for drawing boxes in terminal

I am trying to draw a box on the screen that looks like this: ┌───┐ └───┘ I found ANSI commands to move the cursor here: http://www.tldp.org/HOWTO/Bash-Prompt-HOWTO/x361.html My code looks like this: int main() { int boxsize = 5; …
lo tolmencre
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Rotate line around center

I have to use a propriertary graphics-engine for drawing a line. I can rotate the whole drawing by its origin point (P1). What I want, is to rotate it around its center point(M). So basically that it looks like L_correct instead of L_wrong. I think,…
Tofferino
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Point / Line Detection Based on a Set of Consecutive / Semi-Consecutive Points

I am trying to write some point / line detection software based on what a user is drawing on a canvas (I have been doing this all via the web and html 5 canvas). When a user performs a MouseDown event we create an array that will hold all of the…
Greg Valainis
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Java FX dragging and deleting lines

Today I need your help with JavaFX 2. I have an exercise to draw lines using mouse, then make them draggable with pressed CTRL and leftMouse press and drag, and delete them using ctrl+clicked rightMouse. I understand an algorithm, but don't know…
vladys.bo
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