https://github.com/rarakira/minirt

Rendering 3D scenes using Raytracing
https://github.com/rarakira/minirt

21school 3d 3d-graphics ecole42 minilibx minirt raytracing

Last synced: 2 months ago
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Rendering 3D scenes using Raytracing

• Host: GitHub
• URL: https://github.com/rarakira/minirt
• Owner: rarakira
• Created: 2022-01-19T06:59:27.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2022-05-18T14:31:33.000Z (over 3 years ago)
• Last Synced: 2023-03-10T00:26:15.683Z (over 2 years ago)
• Topics: 21school, 3d, 3d-graphics, ecole42, minilibx, minirt, raytracing
• Language: C
• Homepage:
• Size: 9.45 MB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
_This is a **21 School/Ecole 42** Project. Worked in team with [Dredfort](https://github.com/dredfort42)_

# miniRT (Raytracing)

MiniRT is a program that can render 3D scenes using raytracing technique using [MiniLibX](https://harm-smits.github.io/42docs/libs/minilibx/introduction.html) library. Subject can be found [here](https://cdn.intra.42.fr/pdf/pdf/47303/en.subject.pdf).

## Project goals

* Get familiar with raytracing

* Render 3D scenes with geometric objects using linear algebra

* Work with light, shading and texturing

* Implement scene navigation, object selection and modification

![Camera Rotation](preview/miniRT_camera_rotation.gif)

## To compile and run

Run the following commands in Terminal:

```shell

# to build

> make

# to run

> ./miniRT scenes_checklist/test01-sphere.rt 

```

The program accepts one `.rt` file as argument. Scene description files can be found at `scenes_checklist/` folder. Scene includes Ambient lightning, Camera, one or more coloured Spot lights, and geometry objects (`spheres`, `planes`, `cylliners` and `cones`).

To close window press `esc`.

## Scene control

| 
Camera movement
 | 
Object modification
 |

| ------------------------ | ---------------------------- |

|  | Click `[left mouse button]` to select/deselect object|

|  |

| Use `[a]` & `[d]` to move left or right | Use `[1]` & `[2]` to increase/decrease object radius |

| Use `[q]` & `[e]` to move up and down | Use `[3]` & `[4]`  to increase/decrease object height |

| Use `[w]` & `[s]` to move forwards or backwards | Use `[+]` & `[-]` to increase/decrease light brightness |

|  |

| Press `[↑]` rotatate camera upwards | Press `[T]` apply/discard texture |

| Press `[↓]` rotatate camera downwards | Press `[B]` apply/discard bump |

| Press `[←]` rotatate camera left | Press `[C]` apply/discard checkerboard |

| Press `[→]` rotatate camera right |


## Reneder examples

![Spheres scene](preview/miniRT-spheres.png)

![White scene](preview/miniRT-white-scene-1.png)

![White scene](preview/miniRT-white-scene-2.png)

![Complex scene](preview/miniRT-complex-1.png)

![Complex scene](preview/miniRT-complex-2.png)

![Complex scene](preview/miniRT-complex-3.png)

### Shading render on light movement

![Light movement](preview/miniRT_light.gif)

## Useful links

* All the useful [formulas](https://hugi.scene.org/online/hugi24/coding%20graphics%20chris%20dragan%20raytracing%20shapes.htm)

* Basic [lighting](https://learnopengl.com/Lighting/Basic-Lighting)