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Announcements & Review

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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Announcements & Review

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  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. Java Examples in BlueJ • Images as 2D arrays • Playing with colors Lecture 24: Color

  7. More Questions? Lecture 24: Color

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