Package greenfoot

Class Color

java.lang.Object
greenfoot.Color
public class Color extends Object
A representation of a Color. The Color can be used to draw or fill shapes on the screen.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final Color
    BLACK
    The color black.
    static final Color
    BLUE
    The color blue.
    static final Color
    CYAN
    The color cyan.
    static final Color
    DARK_GRAY
    The color dark gray.
    static final Color
    GRAY
    The color gray.
    static final Color
    GREEN
    The color green.
    static final Color
    LIGHT_GRAY
    The color light gray.
    static final Color
    MAGENTA
    The color magenta.
    static final Color
    ORANGE
    The color orange.
    static final Color
    PINK
    The color pink.
    static final Color
    RED
    The color red.
    static final Color
    WHITE
    The color white.
    static final Color
    YELLOW
    The color yellow.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Color(int r, int g, int b)
    Creates a RGB color with the specified red, green, blue values in the range (0 - 255).
    Color(int r, int g, int b, int a)
    Creates a RGB color with the specified red, green, blue, and alpha values in the range (0 - 255).

  • Method Summary

    Modifier and Type
    Method
    Description
    Color
    brighter()
    Creates a new color that is a brighter version of this GreenfootColor.
    Color
    darker()
    Creates a new GreenfootColor that is a darker version of this GreenfootColor.
    boolean
    equals(Object obj)
    Determines whether another object is equal to this color.
    int
    getAlpha()
    Returns the alpha component in the range 0-255.
    int
    getBlue()
    Returns the blue component in the range 0-255 in the default RGB space.
    int
    getGreen()
    Returns the green component in the range 0-255 in the default RGB space.
    int
    getRed()
    Returns the red component in the range 0-255 in the default RGB space.
    int
    hashCode()
    Computes the hash code for this Color.
    String
    toString()
    Return a text representation of the color.

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

    • WHITE

      public static final Color WHITE
      The color white. In the default RGB space.

    • LIGHT_GRAY

      public static final Color LIGHT_GRAY
      The color light gray. In the default RGB space.

    • GRAY

      public static final Color GRAY
      The color gray. In the default RGB space.

    • DARK_GRAY

      public static final Color DARK_GRAY
      The color dark gray. In the default RGB space.

    • BLACK

      public static final Color BLACK
      The color black. In the default RGB space.

    • RED

      public static final Color RED
      The color red. In the default RGB space.

    • PINK

      public static final Color PINK
      The color pink. In the default RGB space.

    • ORANGE

      public static final Color ORANGE
      The color orange. In the default RGB space.

    • YELLOW

      public static final Color YELLOW
      The color yellow. In the default RGB space.

    • GREEN

      public static final Color GREEN
      The color green. In the default RGB space.

    • MAGENTA

      public static final Color MAGENTA
      The color magenta. In the default RGB space.

    • CYAN

      public static final Color CYAN
      The color cyan. In the default RGB space.

    • BLUE

      public static final Color BLUE
      The color blue. In the default RGB space.

  • Constructor Details

    • Color

      public Color(int r, int g, int b)
      Creates a RGB color with the specified red, green, blue values in the range (0 - 255).
      Parameters:
      r - the red component
      g - the green component
      b - the blue component

    • Color

      public Color(int r, int g, int b, int a)
      Creates a RGB color with the specified red, green, blue, and alpha values in the range (0 - 255).
      Parameters:
      r - the red component
      g - the green component
      b - the blue component
      a - the alpha component

  • Method Details

    • brighter

      public Color brighter()
      Creates a new color that is a brighter version of this GreenfootColor.

      This method creates a brighter version of this color. The alpha value is preserved. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.

      Returns:
      a new GreenfootColor object that is a brighter version of this GreenfootColor with the same alpha value.

    • darker

      public Color darker()
      Creates a new GreenfootColor that is a darker version of this GreenfootColor.

      This method creates a darker version of this color. The alpha value is preserved. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.

      Returns:
      a new GreenfootColor object that is a darker version of this GreenfootColor with the same alpha value.

    • equals

      public boolean equals(Object obj)
      Determines whether another object is equal to this color.

      The result is true if and only if the argument is not null and is a greenfoot.Color object that has the same red, green, blue, and alpha values as this object.

      Overrides:
      equals in class Object
      Parameters:
      obj - the object to test for equality with this color
      Returns:
      true if the colors are the same; false otherwise.

    • getRed

      public int getRed()
      Returns the red component in the range 0-255 in the default RGB space.
      Returns:
      the red component.

    • getGreen

      public int getGreen()
      Returns the green component in the range 0-255 in the default RGB space.
      Returns:
      the green component.

    • getAlpha

      public int getAlpha()
      Returns the alpha component in the range 0-255.
      Returns:
      the alpha component.

    • getBlue

      public int getBlue()
      Returns the blue component in the range 0-255 in the default RGB space.
      Returns:
      the blue component.

    • hashCode

      public int hashCode()
      Computes the hash code for this Color.
      Overrides:
      hashCode in class Object
      Returns:
      a hash code value for this object.

    • toString

      public String toString()
      Return a text representation of the color.
      Overrides:
      toString in class Object