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Math::Bezier::Convert 0.02

  Date Added: March 17, 2010  |  Visits: 933

Math::Bezier::Convert

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Math::Bezier::Convert is a Perl module to convert cubic and quadratic bezier each other. SYNOPSIS use Math::Bezier::Convert; @new_cubic = divide_cubic($cx1, $cy1, $cx2, $cy2, $cx3, $cy3, $cx4, $cy4, $t); @new_quad = divide_quadratic($cx1, $cy1, $cx2, $cy2, $cx3, $cy3, $t); @quad = cubic_to_quadratic(@cubic); @cubic = quadratic_to_cubic(@quad); @lines = cubic_to_lines(@cubic); @lines = quadratic_to_lines(@cubic); Math::Bezier::Convert provides functions to convert quadratic bezier to cubic, to approximate cubic bezier to quadratic, and to approximate cubic and quadratic bezier to polyline. Each function takes an array of the coordinates of control points of the bezier curve. Cubic bezier consists of one ANCHOR control point, two DIRECTOR control points, one ANCHOR, two DIRECTORS, ... and the last ANCHOR. Quadratic bezier consists of one ANCHOR, one DIRECTOR, ... and the last ANCHOR. The curve pass over the ANCHOR point, but dose not the DIRECTOR point. Each point consists of X and Y coordinates. Both are flatly listed in the array of the curve, like ($x1, $y1, $x2, $y2, ...). divide_cubic( $cx1, $cy1, $cx2, $cy2, $cx3, $cy3, $cx4, $cy4, $t ) divides one segment of the cubic bezier curve at ratio $t, and returns new cubic bezier which has two segment (7 points). divide_quadratic( $cx1, $cy1, $cx2, $cy2, $cx3, $cy3, $t ) divides one segment of the quadratic bezier curve at ratio $t, and returns new quadratic bezier which has two segment (5 points). cubic_to_quadratic( @cubic ) approximates cubic bezier to quadratic bezier, and returns an array of the control points of the quadratic bezier curve. quadratic_to_cubic( @quadratic ) converts quadratic bezier to cubic bezier, and returns an array of the control points of the cubic bezier curve. cubic_to_lines( @cubic ) approximates cubic bezier to polyline, and returns an array of endpoints. quadratic_to_lines( @cubic ) approximates quadratic bezier to polyline, and returns an array of endpoints..

Requirements: No special requirements
Platforms: Linux
Keyword: Anchor Bezier Bezier Curve Control Points Cubic Curve Director Libraries Mathbezierconvert One Perl Module Points Programming Quadratic
Users rating: 0/10

License: Freeware Size: 6.14 KB
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