Questions tagged [graphics]

Use this tag for questions involving visual presentations, whether they are generated using bitmap or vector techniques.

3
votes
1answer
255 views

Using graphics to draw on form, in C#

I have a form, which I want to draw on-top some shapes. To be exact, rectangles and lines. This is the "Redraw" method. I call this method every 100ms from a different thread. ...
6
votes
0answers
44 views

Unity3D shader for rendering 2D sprites with a pseudo-glitch effect

I'm making a puzzle game in Unity with sprite-based graphics. When the game is paused, I want to hide most game elements, because I don't want the player to be able to pause and leisurely think about ...
5
votes
2answers
78 views

Class hierarchy for objects in a 3D engine

I am writing my own 3D engine. I initially made the code quick and dirty but after a while the code became pretty messy and it have a lot of repeating code so I am currently cleaning up some of the ...
3
votes
1answer
47 views

Plot ROC, PR, and PRI curves in C# using pre-calculated coordinates

I have written a small program in C# to plot ROC, PR (equal to AP) and ...
2
votes
0answers
42 views

DirectX11 Error Handling

I'm new to C++, been a C programmer most of my life. I wanted to get into graphics and Direct3D is C++ so I figured it was about time. I've been learning about strings, vectors, references, smart ...
7
votes
2answers
87 views

Maze generator for teaching Python 3

I am teaching programming (in this case - 1 on 1 tutoring of a teenager interested in programming) and this code will be a final stage of a progression toward program generating a maze. Any comments ...
13
votes
2answers
475 views

Sierpiński's carpet fractal animation for teaching Python 3

I am teaching programming (in this case - 1 on 1 tutoring of a teenager interested in programming) and this code will be a final stage of a progression toward program generating a nice image of ...
0
votes
0answers
25 views

CPU Barycentric rendering in JavaFX/Kotlin

I am writing a software renderer for the Kotlin port of Dear ImGui. In order to be feature complete, I needed to add barycentric coloring to some triangles for things such as color pickers. I have ...
1
vote
0answers
62 views

2-dimensional random walk simulator, draws the steps on a canvas

Here's what I came up with for a 2-dimensional random walk exercise. It takes a number of steps as input and iterates through them, while drawing every step as a line on the canvas. The direction is ...
1
vote
2answers
53 views

Drawing graphics and text using macOS Core Graphics

I have a small python project, which draws graphics and text onto a graphics context using MacOS's Core Graphics APIs. The idea is to make it easy for the user to write a few short lines, in order to ...
4
votes
1answer
56 views

Analyzing spoke overlaps during rotation: Round 2

Round 1: Analyzing spoke overlaps during rotation I previously posted this question, but I've changed a lot of the code since then. There was a mention of the previous being a bit mixed up, and ...
6
votes
1answer
56 views

Analyzing spoke overlaps during rotation

For a personal project that I've recently started I have to analyze the rotation of two shapes with sets of spokes, where the spokes are evenly-spaced, and split into a given number. That is, if I ...
0
votes
0answers
190 views

Voxel Engine with Vulkan

Here is my voxel engine. I want some review for performance on the renderer. What can be improved? What must change? Also I'm not sure it is efficient to use vkWaitQueueIdle for syncing. The end goal ...
4
votes
2answers
137 views

Portrait Painting Genetic Algorithm

Inspired by this article. I've been trying to learn more C# and OOP. Here is my take on a genetic algorithm as described in the article. Here are some of the results flower jelly lighthouse beach ...
4
votes
1answer
97 views

Drawing consecutive rectangles with an algorithm

I have an assignment to draw rectangles that get larger and larger each time I draw them. Just like shown below. I've labeled them TL = Top Left, TR = Top Right, BL = Bottom Left, BR = Bottom Right. ...
14
votes
1answer
1k views

OpenGL Instanced Rendering

I have a very basic OpenGL instanced rendering setup, which is compiling and running, however it is super slow, and even though I spent days of asking and reading how to fix it, I still have no clue, ...
5
votes
1answer
87 views

Drawing a grid-based particle system

For some time now, I've been working on a game which is superficially similar in appearance to this one. A world is filled with particles that move and change state frequently (per frame, often). ...
3
votes
2answers
5k views

Converting Delphi colors between TColor, RGB, CMYK, and HSV

I wrote a record which encapsulates conversion of colors between TColor, RGB values, CMYK ...
3
votes
0answers
99 views

Implementing Cyrus Beck algorithm for convex polygons

I have found the coordinates of the centroid for finding the direction of the normal vectors of the edges of the convex polygons. This method seems to work in the cases I tested. Is this fool proof ? ...
2
votes
1answer
432 views

DirectX Window Class

After figuring out DXGI, I wrote a class that combines the act of creating a window and its associated swap chain (as well as an OOP approach to messages). The class supports different window modes ...
5
votes
0answers
38 views

CMYK shadings implementation for PGF

PGF is a graphics framework for \$\TeX\$ and friends. It supports shadings (gradients), but only in RGB. There is often a need to output shadings in CMYK and I am having a go at implementing this. I'...
1
vote
0answers
31 views

Drawing sprites and adding new ones

I have some code that draws sprites and and allows new ones to be added. To do this, I use 2 lists: 1 for the sprites that need to be drawn, and one for the new sprites that need to be added to the ...
5
votes
1answer
149 views

Animating a screw made up of elements

I am working on code to generate a screw made up of different elements and animating it by rotatation. The elements are so called conveying elements (denoted by GFA)...
3
votes
1answer
60 views

Generic pixel class to seamlessly alpha-blend and convert between different pixel structure layouts

Does what it says in the title. I just finished this and wanted to share with someone. Looking for possible optimizations, bugs (most of it is tested to work) or any constructive criticism. ...
3
votes
1answer
780 views

Drawing a checkerboard with FLTK

This is my first attempt to draw using FLTK libraries *: ...
3
votes
1answer
39 views

Tone Mapping image manipulation

This code is extremely slow and ideally I would appreciate someone walking me through getting this going on the GPU, but if nobody has time for that which is understandable, any and all optimisations ...
10
votes
3answers
162 views

Generating image gauges from a value, min and max

One of the things I was recently investigating was the ability to generate "gauge" charts—that is, a chart which shows where a value stands within a range of values. As an example, if we know ...
3
votes
2answers
138 views

Math matrix, mainly for graphics

I wrote a matrix library to replace my old matrix library. I was using my old matrix library to do basic operations for 3D rendering but that library grew old and now I'm seeking to replace it. I'm ...
6
votes
1answer
332 views

Drawing a Koch snowflake in Android

Here's my attempt to draw Koch snowflake. My initial state is a line instead of an equilateral triangle so that I am able to fit maximum detail in a mobile phone window. My thought process was: ...
2
votes
2answers
79 views

Performing several hundred raster multiplications

I have several hundred "A" rasters, numbered from 001_A.tif to 100_A.tif. I also have several hundred "B" rasters, numbered ...
-1
votes
2answers
540 views

Adding text to video frames

I'm currently trying to add text to a video. To do so I've been manipulating each frame by adding text to each bitmap and then rendering a new video. ...
8
votes
1answer
874 views

Multi-function clock GUI

I was sitting in my bedroom, looking at my Powers of 2 clock sitting next to my radio, under my analog clock on the wall, and wondered to myself: "Why have all these different clocks when I can have ...
4
votes
0answers
43 views

TikZ: Arrow pointing to circle from inside through two points

Originally posted here; this comment suggested that I ask this question on this site instead. The code at the bottom produces the correct drawing, shown below. The issue is that I don't think I drew ...
1
vote
0answers
111 views

GLSL Simplex Noise with derivatives

I recently made 2d simplex noise based coherent noise in GLSL. [Here] is the shader toy. I wanted to make an implementation of simplex noise on the gpu in order to get better performance than the CPU ...
6
votes
1answer
81 views

Drawing circles from array to a Form

I've actually been struggling with painting with VB.Net for a few weeks. All I know is that I shouldn't use CreateGraphics if I can avoid it, so I've done just that....
6
votes
2answers
126 views

Sims-style walls part 2: Flood fill

A follow up to this post. I've ported all of it to Unity, and generally cleaned it up a little, but looking over the code, the code for flood filling is messy and repetitive. Here's a visual of how it ...
4
votes
1answer
404 views

Optimizing HLSL shader

I am trying to optimize my vertex and pixel shader code. Do you have any suggestions what could I possibly do to improve performance? I am using it to draw textured cuboids, and if there are many ...
1
vote
0answers
114 views

Drawing a chessboard pattern using a nested for loop

I've been messing around with a software called Processing, used for user interactions and a lot of cool things. I programmed a pattern from a Chess set but I'm not sure if it's the best way to ...
4
votes
1answer
85 views

Binary/yijing clock in Processing with excessive resource consumption

I've been learning Processing for the last week or two, and I've made a couple of little 'desktop toy' type apps like this one that I'm quite pleased with. However, it just occurred to me today to ...
2
votes
2answers
280 views

Drawing a castle and towers with acm.graphics

The following code is my solution of exercise 10 of chapter 5 of The Art and Science of Java. So here, using acm program and graphics, I need to draw a castle with two side towers and other three ...
2
votes
1answer
97 views

Voxel engine to draw cubes

I am an amateur in OpenGl and for this reason I am seeking to learn only modern OpenGl the 4.x stuff. Once I had completed basic tutorials (rotating cubes, for example) I decided I would try and ...
7
votes
2answers
790 views

Drawing a circle segment

I wrote code to draw a circle segment, such that the segment angle will be facing the mouse. My code: ...
2
votes
0answers
185 views

Draw a panel control with a sunken look

I am relatively new to visual studio. I am in the process of creating a custom control and the same time learning. I have put together the beginning of this control and will love to get some input. ...
5
votes
1answer
9k views

Single-player Agario game

I made an Agario single player version (soon to become a multi player one using socket). What can be some improvements? Controller: ...
4
votes
1answer
671 views

Drawing a word, with a box around one letter

I'm working on a draw function which needs to draw the word 'crux' in the center of the current view and then draw a red box around the 'x' character like this: My ...
4
votes
3answers
399 views

Simulating a closed particle system in Java

I have this program that simulates a closed particle system. Closed in this context means that the sum of all energies is constant. My primary concern is code itself, yet I would like to hear comments ...
3
votes
3answers
240 views

Drawing colored circles using Ruby and Tk

I am a high-school freshman who is kinda new to Ruby, and I am doing a small project on Ruby. One of the big things that I want to get out of this project is how to follow the "Ruby standards" that ...
0
votes
1answer
112 views

OpenGL framework “SOGL”

Here is my repo, pull requests are always welcome ^^ I know that OpenGL frameworks already exists (OGLPlus, for example) but I developing another one following this set of reasons: To understand how ...
3
votes
1answer
493 views

Java - fill triangle function

I am starting to work on a basic 3D renderer for fun, so right now I have made a triangle fill function to be used when I draw faces on models: ...
6
votes
2answers
258 views

2D SDL Asteroids-like game

I am writing an Asteroids clone in SDL2 using in C. I have written a game loop function that seems to work with no stutter, however I would just like to ensure my game loop will be fast and efficient ...