ICS 61 - Graphics. Light Color Wheel Color Perception.
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ICS 61 - Graphics
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Transcript of ICS 61 - Graphics. Light Color Wheel Color Perception.
ICS 61 - Graphics
Light
Color Wheel
Color Perception
Rods and Cones
Red Green Blue
Red Green Blue
Hue Saturation Value
Pixels
2-D Graphics – Approaches
• Sprites (pixels, created in advance and stored in a file)
• Primitive shapes (squares, circles, etc.)• Text• Vector graphics (e.g., Flash) - outlines• Set each pixel – probably with an algorithm
(e.g., to make fireworks). “Particle systems”
Sprites
In Scratch, the different frames are called “Costumes”.
Vector graphics
Source: http://www.intmath.com/vectors/vector-art.php
Vector based images can be zoomed without pixelation.Ugly zoomed raster image.
A vector image’s outline is defined by mathematical curves.
Text – vector and bitmap
Particle Systems