# Tagged Questions

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798 views

### How do you calculate the nearest point on 2 curves?

Given the points of a line and a quadratic bezier curve, how do you calculate their nearest point? .... Similarly, given the points of 2 curves, how do you get the nearest point?
343 views

### How do you calculate if 2 lines are facing toward or away?

Given the 4 points describing 2 line segments, how do you calculate if line A is towards or away from line B? The 2 lines have a fixed length, and can be measured as distance from x1/y1 to x2/y2.
4k views

### How to make Line Renderer lines stay flat?

I've noticed that as I add more vertexes to a Line Renderer line the line twists and stops being a smooth line. .GIF Here: http://i.imgur.com/hRAhCXM.gif All lines are on the same z level, even ...
1k views

### How to find path in graph without crossing the walls?

I would like to know how to find path in a graph while having the edges "double-sided". Consider this scenario: I have list of the line segments. These represents "walls" or rather impassable edges ...
1k views

### XNA 2D Spritesheet drawing rendering problem

I'm making a tile-based game, using one spritesheet containing all tile graphics. Each tile has a size of 32x32 pixels. The main problem is: when I draw the tile to the screen, if the tile position ...
230 views

### How to create laser redirection?

Think portal 2, where a laser can go through a cube, and depending on the rotation of that cube, it will redirect it. Examples: Here is my barely functioning code. It works for one cube, I'm able ...
565 views

### How do I draw a dotted or dashed line?

I'm trying to draw a dashed or dotted line by placing individual segments(dashes) along a path and then separating them. The only algorithm I could come up with for this gave me a dash length that was ...
317 views

### How to order points on a 3D grid such that we can connect them in a line loop correctly

I want to recreate an effect as close as possible to X-Com: Enemy Unkown's movement range feedback: The blue line delimits the tiles which the soldier can reach using a single action. We also are ...
145 views

### Drawing a lines radiating from every angle using Bresenham line algorithm

I am trying to recreate a image like this ... or just each point Using Bresenham line algorithm, but can't seem to able to do so.. The point i receive from my computation doesn't look like a like, ...
60 views

### How to smooth hand drawn lines?

So I am using Kinect with Unity. With the Kinect, we detect a hand gesture and when it is active we draw a line on the screen that follows where ever the hand is going. Every update the location is ...
421 views

### How to shade hair (line segments) correctly in GLSL

I render my hair geometry in line segments. The problem I have is with the correct shading of the hair. From what I've read I understood that I need the direction of the line segment and the ...
161 views

### Perspective Projection - Drawing Lines

So I sort of understand the math behind projecting 3d points onto a 2d plane. It's just some simple dividing and multiplication of distances. However I can't seem to wrap my head around projecting ...
124 views

### Draw n pixels wide lines in 3D world in unreal engine 4?

Is it possible to draw n pixels wide lines (like the ones I would have with GL_Lines in OpenGL) ? I'm looking for something like this.