Lecture 1 - Projections and Transformations (slides)

45 inverting rotation rotation inverting a rotation a

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Unformatted text preview: tions have a direction ! Note following about the matrix formulations given in •  Note the the following about the matrix formulations given in these notes: these notes: ! –  WeI We will stick to a left-handed coordinate system will stick to a left-handed coordinate system ! –  Rotation is anti-clockwise when looking along the along the axis of I Rotation is anti-clockwise when looking axis of rotation (in the previous slide, the z-axis goes into the page). ! rotation (in the previous slide, the z -axis goes into the page). –  Rotation is clockwise when looking back towards the origin from I Rotation the positive sideis clockwise when looking back towards the origin of the axis ! from the positive side of the axis Graphics Lecture 1: Slide 52! 45 Inverting Rotation rotation! ! Inverting a rotation ! a rotationθ!by by angle Inve...
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