Coordinates systems : transformations ( continued )

• With this notation, transformations can be calculated as follows :
• Translation

where tx and ty are the translation distances along the x and y axes
• Scaling

where sx and sy are the scaling factors along the x and y axes
• Rotation

where a is the rotation angle
• Skewing x

where a is the skewing angle towards y
• Skewing y

where a is the skewing angle towards y

Didier Courtaud The SVG language Novembre 2001

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