Questions tagged [lines]
The lines tag has no usage guidance.
28 questions
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472
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Generate random line path with no intersection
The idea is to generate a path with a certain distance m.
Currently the generation pseudo code is as follows:
...
- 113
0
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2
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199
views
X axis intersection with inverted Y axis coordinates
I'm making a visual clue for the player to know where (and more or less when) an asteroid is going to enter the screen.
For this I'm using a triangle pointing at the incoming object and color ...
- 386
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1
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2k
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Multiple Lines with Single LineRenderer
I have a database of country, state, and even county level borders and I'm stuck in a situation where I either have 1000+ linerenderers in the scene OR I have a single line that connects every border ...
- 259
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2
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271
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How to extend a line to infinity?
In my game I have a line that simulates the trajectory of a gun shot, fired by the main character.
The line starts at the character and ends at the mouse position at the moment of the click.
What ...
- 681
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674
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Why do we get artifacts on objects rendered using depth node + depth render camera on Android?
I've encountered and error I can't seem to find online. I get it on all the water shaders I test, and any thing else that I have a depth node + depth render script on the camera for.
I'll share a bit ...
- 11
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345
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How to draw a line based on an angle with a defined size?
I have a game where the player shoots a projectile based on the mouse direction when clicking, which travels 500 pixels.
I wish I could draw a line exactly where the projectile will be destroyed.
...
- 681
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1
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70
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how can I transform a skewed line to a vertical line?
So, I have a line:
And I skewed it with x += y * cos(angle)
and got something like:
My question is, if I have another line segment with that same skew, how can I ...
- 209
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208
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Random lines drawn on screen while all vertexes are correct
I'm writing a 2D program in which a monocycle follows a Catmull-Rom spline. My problem is when I write the circle, the drawing goes crazy. There is one line on the screenshot (which seems to be 3 when ...
- 11
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800
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Drawing many separate lines using mouse OpenGL(GLFW/glad)
So, in order to draw a line, I track the coordinates of the mouse, then I add them to the array and capture it as GL_LINE_STRIP_ADJACENCY. However, for example, I completed drawing a line1 at P1 and ...
- 113
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1
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220
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Detect mouse over a line in Phaser
We're developing a game in Phaser as a university project and have come across an obstacle. We need to detect when the mouse is over a line between two points. There are not a lot of lines, definitely ...
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236
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Why does my shader's Texture become unselected when I run my game?
I'd like to add a custom material to a line that I'm drawing in Unity (using Vectrosity). I'm using Unity's built-in "Unlit/Texture" shader. When I drag a texture from my Resources directory into ...
- 243
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7k
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Enable/ Disable Line Renderer points
I have a Line Renderer component with 4 points, I would like to disable and enable the last 2 points at a certain time. My question is, how would I in code (C#) enable and disable individual Line ...
- 1,255
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2
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3k
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LibGDX How can I draw a line at a specific angle
I'm working on a 2D platformer, shooter game and I'm attempting to draw a line to serve as a guide to indicate where the player is shooting. The line should be drawn from the player's sprite to the ...
- 209
1
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1
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15k
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LineRenderer sorting order - lines always in front of everything
I have 3 cameras and 3 canvases.
Back Camera: depth = -5, Back Canvas: Sorting layer - BackLayer,
Camera: depth = 0, Middle Canvas: Sorting layer - MiddleLayer,
Camera: depth = 10, Front Canvas: ...
- 2,552
1
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1
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524
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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 ...
- 185
2
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1
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1k
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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, ...
- 21
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1
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4k
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How to correctly draw a 2D polygon in Unity
I'm trying to draw a 2D polygon using GL.Line; however I'm not getting a polygon but separated lines instead. In the example below, I would expect a rectangle formed by the spheres:
My code is the ...
14
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4
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22k
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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: https://i.sstatic.net/cfpe5.gif
All lines are on the same z level, even if ...
- 914
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1
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446
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 ...
1
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4
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986
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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:
(source: gameinformer.com)
The blue line delimits the tiles which the soldier can reach using a ...
- 19
1
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1
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647
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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 to ...
- 41
7
votes
3
answers
2k
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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 (...
- 614
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0
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1k
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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 ...
- 157
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1
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175
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How to remove line between two Points XNA 4.0?
I'm new to XNA and wondering if it is possible to remove a line (that lies between two vectors) when the mouse clicks on that line. I've searched everywhere but I can't seem to find anything.
My ...
- 1
5
votes
5
answers
2k
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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 ...
- 51
2
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1
answer
3k
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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 ...
- 360
15
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4
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1k
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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?
- 2,771
10
votes
2
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390
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.
- 2,771