# Tagged Questions

A geometrical description of the part of that space occupied by the object, as determined by its external boundary – abstracting from location and orientation in space, size, and other properties such as colour, content, and material composition.

2k views

### Recognizing a hexagonal clickbox

I'm working on a game that is going to involve gasp hexagons. At present, I have a hexagon image that I am using (all sides are the same length...it fits into a 50px by 50px image). I am somewhat ...
556 views

### Determine whether a shape formed from a series of other shapes is 'unbroken'

I have a grid of tiles in a game and each tile can have a certain simple shape on it. I want to be able to determine whether the combined shape from any given arrangement of these tiles results in ...
632 views

### How do I get the areas enclosed by an arbitrary 2D shape?

In my game I want users to be able to draw arbitrary 2D shapes of any length around game objects. The shapes must be closed and drawn with a single stroke that does not overlap. For example: I ...
237 views

### Creating force shields: the most efficient way of deforming/reshaping a simpler convex mesh so it envelopes a complex mesh?

So, the best way I can think of how to explain what I need is the following (images used here are just random images found trough google image search). What I am trying to create during run-time is ...
10k views

### Libgdx ShapeRenderer rectangles

I'm trying to draw a filled rectangle in Libgdx and according to the API this should work: shapeRenderer.begin(ShapeRenderer.ShapeType.FilledRectangle); But it gives me an error and tells me to ...
101 views

### Making various shapes equally difficult to tap

I'm developing a game where the player quickly has to tap/click on various shapes such as squares, circles, triangles, stars and so on. I'm now struggling with the following task: I'm searching for a ...
1k views

What is the best way to render a texture overlapping effect? Like in this example: I want either the grass to fade in to the snow texture, or the other way around. No rough edges. Somehow make ...
3k views

### How do I render a rounded rectangle in libgdx?

I've been thinking of ways to render a rounded rectangle in libgdx. I haven't found a pre-built way in the documentation. I've looked at: ShapeRenderer, but that's apparently quite expensive ...
5k views

### XNA - Drawing 2D Primitives (Boxes) and Understanding Matrices in Computer Graphics

I have two issues which I wish to solve by creating 2D primitives in XNA. In my game, I wish to have a "debug mode" which will draw a red box around all hitboxes in the game (Red outline, ...
627 views

### Shapes and sprites in SVGs

I understand SGV images are used in 2D games to store shape data for the physics engine of the game. I'm unsure though, should the raster sprite also be stored in the SVG or should it be separate? ...
364 views

### How can I add a transparent overlay to a UI in libGDX?

I am attempting to use the following code shapeRenderer.begin(ShapeRenderer.ShapeType.Filled); shapeRenderer.setColor(3,3,3,.3f); shapeRenderer.rect(0,0,gameWidth,gameHeight); ...
95 views

### Getting the topleft, topright, bottomleft and bottomright points of a shape in Unity3D?

I have a 4-point shape that is defined in screen space by the user. They can draw the 4 points, one at a time, in any order they wish. I am using a List of Vector2's to store the screen co-ordinates ...
665 views

### Collision detection between 2 irregular shapes

I need to implement a collision system for a vertical-shotter and the bullets can have any type of shape; i've implemented the shape class with an array of choords and an array of lines which have the ...
172 views

### What AI algorithm to use to find hidden shapes in a Battleships-like game

I'm developing a game similar to Battleships, only using different shapes. A single type of shape will be used within a game session, by both the human player and AI. There will be several objects ...
176 views

### AI and shapes in 2D Grid

I'm working on a grid- and turn-based strategy rpg. My problem is concerning finding best position for my AI to use a skill. But lets start at the beginning. My plan is to make each skill an action ...
889 views

### Farseer Physics: How to create shape from Vertices?

As you can understand from the title, I'm pretty new to game development. I'm doing this for fun. Anyway here's my question. I have this Farseer Physics samples and i've been studying them for a few ...
132 views

### LibGDX - ShapeRenderer as principal game entity renderer

I am trying to make a 2D game that is just a bunch of default figures like circles, arcs and quadrilaterals with no textures (similar to Super Hexagon), and for that I was using C# and XNA long time ...
227 views

### Drawing multiple triangles at once isn't working

I'm trying to draw multiple triangles at once to make up a "shape". I have a class that has an array of VertexPositionColor, an array of Indexes (rendered by this Triangulation class): http://www....
6k views

### Trying to create a sphere in UDK on which I can stand

Trying to build a globe in UDK, but when I do (create a sphere), my player falls straight through it. How do I make a sphere that I can walk on? Every other shape (cube, cone...etc) work just fine. ...
178 views

### What is the purpose for drawing vertices and shapes in OpenGL (or DX), if a game is using sprites?

Something I do not understand. All the tutorials on OpenGL, DirectX, or other, always show you how to draw a shape and then change its vertices, move it around and so on. But all the games I know of,...
134 views

### Rotate an arrow on a plane?

I'm creating a display for a GPS-based embedded system and would like to have an arrow indicating the current bearing. I'd love the arrow to have a 3d appearance by rotating it on a plane tilted up ...
1k views

### Custom VertexDeclaration for Color, Texture, Normal

What is the best way to create a VertexDeclaration, that makes it able to render a Shape consisting of vertices and also be able to store a color for the shape (in case the texture can't be rendered - ...
1k views

### AndEngine Physics: Shape rotating but not updating physics effects

I was looking at PhysicsExample from AndEngine's Examples. I made the following change that I added a vertical line shape and created a fixture for it. Then I registered a rotation modifier for that ...
2k views

### If filled polygon cannot be drawn via libgdx ShapeRenderer , then what is the work around?

I know most of you would suggest me to draw a filled polygon by using combination of triangles and rectangles , but that is not possible for complex shapes . I want to basically draw a generic shape ...
1k views

### How to simulate cylinder shape in collision detection?

AFAIK, many physics engines like Physx and Havok don't incorporate cylinder as basic shape because it is expensive than sphere, box and capsule. But bullet engine does incorporate cylinder as a basic ...
151 views

### How to render polygons of arbitrary shape? [duplicate]

I am trying to render a plane with nodes. FYI : Nodes know what other nodes it is being attached to. I can think of a way to render them as long as they are aligned in a circular pattern; have a ...
339 views

### Texturize a shape of multiple triangles in 2D

This is an example of a shape consisting of multiple points, triangles and eventually a shape: Red Dots = Vector3 (X, Y, Z) or Vector2 (X, Y) If I have a Texture of a certain size, how do I ...
336 views

### How do I find the shape of Tiled's circles or ellipses in libGDX?

I created a level in the 'Tiled Map Editor' and loaded it into my libGDX game. I can easily transform almost all objects into Box2D objects (although this problem is not Box2D specific), but I have ...
78 views

### Shape collision checking

I want to check in an shape, wether an point is in it or not. The shape is descriped with one Array of float vectors. The vectors are added in clock direction. The first I can check very easy, the ...
293 views

### How do I draw shape distortion with a Texture2D in XNA?

Say I have a rectangular Texture2D object in XNA, and I draw it on the screen. How can I animate it so it slowly changes to a trapezoid shape, and then to a pentagon, etc. I have no idea what this ...
550 views

### Intersecting Ray with Extruded 2D Shapes (e.g. Extruded Text)

I'm looking for a way to find intersection between a ray and an extruded 2D shape or text (defied by a Bézier curve). Any ideas?
58 views

### Use Stage's draw() method to invoke Actor's draw method in Libgdx

Question : In the following snippet, I wish to draw different shapes such as rectangles, circles, triangles etc. I will be creating different class files for each of such objects, as I did for ...
69 views

### Cutting a 3D mesh with a 2D shape

I have a 2D image that i want to use to cut into a 3D mesh while leaving it closed (basically cut straight through it, and close it by generating vertices in both places it cut, front and back, to ...
603 views

### OpenGL: Draw an arrow

I'd like to know how to draw an arrow to represent a vector position, length and direction. The issue is that I can't quite find an easy way to know the location and rotation of the triangle ...
66 views

### Finding the side of a shape a ray intersects

For some simple 3D shapes (cubes, prisms) how can I determine which side a ray intersects, knowing the direction of the ray, and the normals of the shapes' sides. I thought of using plane ...
393 views

### Libgdx/Box2D PolygonShape has no position… well, what now?

As my prototype works perfectly fine I want to advance to more fun areas of the project and add a more complex player-character body. So for Box2D I figured I'd need multiple fixtures, like one for ...
974 views

### How to properly add texture to multi-fixture/shape b2Body

Hello to everyone this is my first poste here I hope that will be not fail start. At start I must say I make part 1 in Ray's Tutorial "How To Make A Game Like Fruit Ninja With Box2D and Cocos2D". But ...
93 views

### Shape editor with custom format?

I'm trying to determine what format the shapes in my 2D game should be stored in and also what software I should use to aid in making the actual shapes. Up until now I used PhysicsEditor from code'n'...
137 views

### libgdx fixture is giving unresponsive error

need some support. I am novice in libgdx game engine. Below is my code package com.game.box2d.fruitcart; import com.badlogic.gdx.Game; import com.badlogic.gdx.Gdx; import com.badlogic.gdx.audio....
220 views

### games logic based on closed shapes

I would like to know the math concepts behind shape based games like http://www.miniclip.com/games/fat-slice/en/ To be specific, I would like to know on how to model shapes programmatically finding ...
337 views

### How to convert a silhouette to a blob?

Using ShapeShop you draw a silhouette and it converts the silhouette to a "blob", which gives a nice game character. Using 3DSMAX 2012 you draw a line and close the spine. How do you convert it to a "...
125 views

### Algorithm to fill a shape defined by 4 pixel points?

I'm developing an application in Unity3D where a user can define 4 pixel points on screen, and what I would like to do is fill this shape with pixels using Unity's SetPixel. While I can do this ...
94 views

### How to render apart blocks of a cone [closed]

in OpenGL I want to render a cone in parts like on the image. My problem is to calculate the arc of each block in 3D space. has someone an idea how to handle this?
342 views

### LibGDX ShapeRenderer rotated

I'm having a weird problem with the LibGDX ShapeRenderer where it draws everything rotated. Here are some images to show you what i mean: This is what it looks like in Tiled(Map Editor): This is ...
33 views

### ChainShape in Box2D

I recently began to learn libgdx and I am stuck at a problem with the CainShape of Box2D. My first goal is to simply create a box with a ChainShape. In order to achieve that, I added four Vector2 to ...