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  2. Block swap algorithms - Wikipedia

    en.wikipedia.org/wiki/Block_swap_algorithms

    A rotation is an in-place reversal of array elements. This method swaps two elements of an array from outside in within a range. The rotation works for an even or odd number of array elements. The reversal algorithm uses three in-place rotations to accomplish an in-place block swap: Rotate region A; Rotate region B; Rotate region AB

  3. Quaternions and spatial rotation - Wikipedia

    en.wikipedia.org/wiki/Quaternions_and_spatial...

    3D visualization of a sphere and a rotation about an Euler axis (^) by an angle of In 3-dimensional space, according to Euler's rotation theorem, any rotation or sequence of rotations of a rigid body or coordinate system about a fixed point is equivalent to a single rotation by a given angle about a fixed axis (called the Euler axis) that runs through the fixed point. [6]

  4. Rotation matrix - Wikipedia

    en.wikipedia.org/wiki/Rotation_matrix

    To step from n to n + 1, generate a vector v uniformly distributed on the n-sphere S n, embed the n × n matrix in the next larger size with last column (0, ..., 0, 1), and rotate the larger matrix so the last column becomes v. As usual, we have special alternatives for the 3 × 3 case. Each of these methods begins with three independent random ...

  5. Rotation of axes in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_of_axes_in_two...

    A point P has coordinates (x, y) with respect to the original system and coordinates (x′, y′) with respect to the new system. [1] In the new coordinate system, the point P will appear to have been rotated in the opposite direction, that is, clockwise through the angle . A rotation of axes in more than two dimensions is defined similarly.

  6. Rodrigues' rotation formula - Wikipedia

    en.wikipedia.org/wiki/Rodrigues'_rotation_formula

    Let k be a unit vector defining a rotation axis, and let v be any vector to rotate about k by angle θ (right hand rule, anticlockwise in the figure), producing the rotated vector . Using the dot and cross products, the vector v can be decomposed into components parallel and perpendicular to the axis k,

  7. Friedrich pulls away for 4-man bobsled win, US finishes 3rd ...

    www.aol.com/friedrich-pulls-away-4-man-152804952...

    Francesco Friedrich got the 85th World Cup bobsled victory of his career Sunday, dominating the second heat to win a four-man race. Friedrich and his team of Matthias Sommer, Alexander Schuller ...

  8. Ragdoll Cat Listed on Clinic Schedule Leaves Vet Tech Totally ...

    www.aol.com/ragdoll-cat-listed-clinic-schedule...

    You'll never find someone who loves Ragdoll cats like one woman does. The vet tech was so excited when she saw there was a Ragdoll on the schedule for that day.

  9. New Year's Eve cocktails for a festive, sparkling, champagne ...

    www.aol.com/years-eve-cocktails-festive...

    Add 1 ounce of syrup and 1 ounce of pear puree to a champagne glass. Top off with champagne or prosecco and garnish with a rosemary sprig.