Vector

A simple but efficient vector library for java.

Features

• Interface oriented
• Both mutable and immutable implementations

API

The following public types are part of the API:

Vectors

• Vec1d, Vec2d, Vec3d, Vec4d
• Vec1f, Vec2f, Vec3f, Vec4f
• Vec1i, Vec2i, Vec3i, Vec4i

Matrices

• Mat1x1d, Mat2x2d, Mat3x3d, Mat4x4d
• Mat1x1f, Mat2x2f, Mat3x3f, Mat4x4f
• Mat1x1i, Mat2x2i, Mat3x3i, Mat4x4i

Example

To keep your code short, this library is intended to be imported statically.

import static com.github.pyknic.vector.vec.Vec.*;
import static com.github.pyknic.vector.mat.Mat.*;

Create a new vector:

Vec3f position = vec3f(3, 3, 0);       // Mutable
Vec3f velocity = vec3f(0, 0, 0);       // Mutable
Vec3f gravity  = const3f(0, 9.82f, 0); // Immutable

Modify a vector:

while (falling) {
    velocity.minus(gravity); // Since velocity and position are mutable,
    position.plus(velocity); // no new instances are created.
}

Create a copy:

Vec3f marsGravity = gravity.scale(0.38f); // Gravity is not modified

Create a new matrix:

Mat3x3f flip = constMat3x3f(  // Create a matrix that flips the x- and
    0f, 1f, 0f,               // y-coordinates of a vector, preserving
    1f, 0f, 0f,               // the z-element.
    0f, 0f, 1f
);

Calculate the dot-product of a matrix and a vector:

Vec3x3f flipped = flip.dot(position);

Download

To use this in your project, add the following code to your pom.xml-file:

<dependency>
    <groupId>com.github.pyknic</groupId>
    <artifactId>vector</artifactId>
    <version>1.1.0</version>
</dependency>

License

Copyright 2016 Emil Forslund

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.