Packages

  • package o1

    O1Library is a toolkit designed for the course Programming 1 (a.k.a. O1) at Aalto University.

    O1Library is a toolkit designed for the course Programming 1 (a.k.a. O1) at Aalto University. It contains an assortment of tools; most prominently, it provides a framework for simple graphical programming and utilities for playing sound.

    This is the front page of O1Library’s documentation. However, this is probably not the best place to start learning about O1Library as a student. That’s because the relevant content of this library is introduced bit by bit in the chapters of O1’s custom ebook alongside the associated programming concepts and assignments.

    You may still find this documentation useful as a reference. You can also find some optional content here that you may wish to try.

    This front page lists the content available in the top-level package called simply o1. These tools are available with the simple command import o1._ in your Scala programs. Some of them you’ll use a lot; some of them you won’t necessarily need at all.

    The tools listed here are actually implemented in a number of subpackages (o1.gui, o1.sound, etc.); what you see here are just “shortcut aliases” to those actual implementations. The aliases are here to make that convenient import command work and to provide you with this list of links to some of the more commonly used tools in O1Library. The subpackages also contain additional content not listed here.

    O1Library has been developed by Aleksi Lukkarinen and Juha Sorva. Several of the key components in o1.gui and o1.world are built upon Aleksi’s Scala Media Computation Library. Some parts of O1Library draw inspiration from the “teachpacks” of the Racket programming language.

    We are grateful to Riku Autio, Joonatan Honkamaa, Juhani Numminen, Leo Varis, Veera Kahva, and anonymous students for bug reports and fixes. We thank Otto Seppälä for helpful discussions.

    Definition Classes
    root
  • package world

    This package contains tools for locations and movement in two-dimensional space.

    This package contains tools for locations and movement in two-dimensional space.

    The tools in this package have aliases in the top-level package o1, so they are accessible to students simply via import o1._.

    The subpackage o1.world.objects contains additional tools for representing entities that reside within two-dimensional spaces.

    Definition Classes
    o1
  • package objects

    This package contains tools for representing objects that exist in two-dimensional space.

    This package contains tools for representing objects that exist in two-dimensional space. In particular, it defines:

    • the Anchor type: an anchor is the point where an object connects to its environment; and
    • a number of traits (HasPos, HasVelocity, etc.) the classes of an application can mix in to gain access to various convenience methods.

    NOTE TO STUDENTS: In this course, you don't need to understand how this package works or can be used. That being said, some students may wish to experiment with some of its contents. Many of the traits in this package have aliases in the top-level package o1, so they are accessible to students simply via import o1._.

    Definition Classes
    world
  • Anchor
  • HasAnchor
  • HasContainer
  • HasEdges
  • HasPos
  • HasSize
  • HasVelocity
  • mutable
t

o1.world.objects

HasAnchor

trait HasAnchor extends HasSize

A supertype for objects that have an anchoring point.

Linear Supertypes
HasSize, AnyRef, Any
Known Subclasses
Pic, HasContainer, HasEdges, ContainedObject, MovingObjectInContainer
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. HasAnchor
  2. HasSize
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def anchor: Anchor

    the object’s anchoring point

  2. abstract def height: Double

    this object’s height: the distance from its top edge to its bottom edge

    this object’s height: the distance from its top edge to its bottom edge

    Definition Classes
    HasSize
  3. abstract def width: Double

    this object’s width: the distance from its left edge to its right edge

    this object’s width: the distance from its left edge to its right edge

    Definition Classes
    HasSize

Concrete Value Members

  1. def centerFromTopLeft: Pos

    the location of this object’s center: the average point between its edges, expressed in coordinates relative to the object’s top left-hand corner

    the location of this object’s center: the average point between its edges, expressed in coordinates relative to the object’s top left-hand corner

    Definition Classes
    HasSize
  2. def internalAnchorPos: Pos

    Returns the Pos of the anchoring point within this object, expressed as coordinates relative to the object’s top left-hand corner.

  3. def internalAnchorX: Double

    Returns the x coordinate of the anchoring point within this object, relative to the object’s left edge.

  4. def internalAnchorY: Double

    Returns the y coordinate of the anchoring point within this object, relative to the object’s top edge.