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Lab 7 Due Thursday 2 D arrays - embedding graphs in an array. Computer Science Artifacts Abstraction Representations Algorithms sort, search, etc. Announcements & Review. Color. Biology - what you see Subtractive primary colors

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Lab 7 Due Thursday

2 D arrays - embedding graphs in an array

Computer Science

Artifacts

Abstraction

Representations

Algorithms

sort, search, etc.

Announcements & Review

Lecture 24: Color


Color

  • Biology - what you see

  • Subtractive primary colors

    • making colors from others on paper or mixing paint

  • Additive primary colors

    • making colors from others on your computer or TV

Lecture 24: Color


Subtractive Color Mixing

In printing and painting

  • RYB - Red Yellow Blue

    • The RYB model combines Red Yellow Blue to create other colors.

    • Mixing paints is an absorptive or subtraction process

  • CMYB - Cyan Magenta Yellow Black

Lecture 24: Color


Additive Color Mixing

  • Screens - TV, computer, cell phone

  • RGB - Red Green Blue

    • The RGB additive light model combines Red Green Blue to create other colors.

    • RGB are the three primary colors in additive light models.

    • The specific shades are unspecified (and devices implement them differently).

    • http://mc2.cchem.berkeley.edu/Java/RGB/example1.html

Lecture 24: Color


Colors in Java

Color constructor:

Color(int r, int g, int b)

  • Each of these integers are between 0 and 255

    Color myColor = new Color(100, 140, 180);

    int red = myColor.getRed();

    int RGBvalue = myColor.getRGB();

    http://java.sun.com/j2se/1.3/docs/api/java/awt/Color.html

Lecture 24: Color


Java Examples in BlueJ

  • Images as 2D arrays

  • Playing with colors

Lecture 24: Color


More Questions?

Lecture 24: Color


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