README.md

Flutter 3D Rendering

This Flutter application provides a simple example of 3D rendering using custom painting. It renders a rotating 3D object on the screen.

Inspired by Coding Train's Coding Challenge #112: 3D Rendering with Rotation and Projection by Daniel Shiffman.

Usage

Import the package in your Dart code:

import 'package:flutter_3d_rendering/donut_renderer.dart';
import 'package:flutter_3d_rendering/render_painter.dart';

Create a BaseRenderer with an angleX, angleY, angleZ to control rotation:

final renderer = DonutRenderer(
  angleX: angleX,
  angleY: angleY,
  angleZ: angleZ,
);

In your widget's build method, use the CustomPaint widget to display the object:

CustomPaint(
  size: const Size(400, 400),
  painter: RenderPainter(renderer),
)

To continuously rotate the object, you can use a timer or any other mechanism to update the angle over time. Here's an example using a timer:

Timer.periodic(const Duration(milliseconds: 16), (timer) {
  setState(() {
    angleX += 0.01;
    angleY += 0.01;
    angleZ += 0.01;
  });
});

Matrix Helper and Vector

The package includes a matrix_helper.dart file that provides matrix manipulation functions for 3D transformations. Additionally, it includes a vector.dart file for working with 3D vectors.

License

This package is released under the MIT License. See the LICENSE file for details.