imagickdraw.pathcurvetoquadraticbeziersmoothrelative(3) php man page | unix.com

IMAGICKDRAW.PATHCURVETOQUADRATICBEZIERSMOOTHRELATIVE(3) 		 1		   IMAGICKDRAW.PATHCURVETOQUADRATICBEZIERSMOOTHRELATIVE(3)

ImagickDraw::pathCurveToQuadraticBezierSmoothRelative - Draws a quadratic Bezier curve

SYNOPSIS
       bool ImagickDraw::pathCurveToQuadraticBezierSmoothRelative (float  $x, float  $y)

DESCRIPTION
       Warning

	      This function is currently not documented; only its argument list is available.

	Draws  a  quadratic  Bezier  curve  (using  relative coordinates) from the current point to (x, y). The control point is assumed to be the
       reflection of the control point on the previous command relative to the current point. (If there is no previous command or if the  previous
       command was not a DrawPathCurveToQuadraticBezierAbsolute, DrawPathCurveToQuadraticBezierRelative, DrawPathCurveToQuadraticBezierSmoothAbso-
       lut or DrawPathCurveToQuadraticBezierSmoothRelative, assume the control point is coincident with the current point). At the end of the com-
       mand, the new current point becomes the final (x, y) coordinate pair used in the polybezier.

	This function cannot be used to continue a cubic Bezier curve smoothly. It can only continue from a quadratic curve smoothly.

PARAMETERS
	      o $x
		- ending x coordinate

	      o $y
		- ending y coordinate

RETURN VALUES
	No value is returned.

EXAMPLES
       Example #1

	      ImagickDraw::pathCurveToQuadraticBezierSmoothRelative

	      <?php
	      $draw = new ImagickDraw();

	      $draw->setStrokeOpacity(1);
	      $draw->setStrokeColor("black");
	      $draw->setFillColor("blue");

	      $draw->setStrokeWidth(2);
	      $draw->setFontSize(72);

	      $draw->pathStart();
	      $draw->pathMoveToAbsolute(50,250);

	      // This specifies a quadratic bezier curve with the current position as the start
	      // point, the control point is the first two params, and the end point is the last two params.
	      $draw->pathCurveToQuadraticBezierAbsolute(
		  150,50,
		  250,250
	      );

	      // This specifies a quadratic bezier curve with the current position as the start
	      // point, the control point is mirrored from the previous curves control point
	      // and the end point is defined by the x, y values.
	      $draw->pathCurveToQuadraticBezierSmoothAbsolute(
		  450,250
	      );

	      // This specifies a quadratic bezier curve with the current position as the start
	      // point, the control point is mirrored from the previous curves control point
	      // and the end point is defined relative from the current position by the x, y values.
	      $draw->pathCurveToQuadraticBezierSmoothRelative(
		  200,-100
	      );

	      $draw->pathFinish();

	      $imagick = new Imagick();
	      $imagick->newImage(700, 500, $backgroundColor);
	      $imagick->setImageFormat("png");

	      $imagick->drawImage($draw);

	      header("Content-Type: image/png");
	      echo $imagick->getImageBlob();
	      ?>

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