quaternion

This topic is about the quaternion data type.

Value syntax

quaternion q = {0,0.707,0,0.707};

Syntax notes

Previous assignment syntax can be used only during initialization. The following code will raise an error.

quaternion q;

q = {0,0.707,0,0.707};

After a quaternion is declared, it can be populated either by using the implemented API listed below or by assigning it the values from another quaternion.

quaternion q;

quaternion q2 = {0,0.707,0,0.707};

q = q2;

Description

Quaternion type is an array of four double values. It is used to host a quaternion representation of a transform rotation.

• The default value is {0,0,0,0}.

• The quaternion type partially supports arithmetic and comparison operators.

Autocasting

Quaternion type supports automatic conversion for

• string, if in the correct input format (space separated list of four numbers); otherwise, it will raise an exception.

  quaternion quat="0 0 0 1"; //quat={0,0,0,1};

• vector4

  vector4 v4={0,0.707,0,0.707};

  quaternion quat=v4; //quat={0,0.707,0,0.707}

Properties

These are the properties for quaternion.

Methods

This table shows the currently implemented methods.