swf_lookat(3) [php man page]

SWF_LOOKAT(3)								 1							     SWF_LOOKAT(3)

swf_lookat - Define a viewing transformation

SYNOPSIS

       void  swf_lookat  (float   $view_x,  float   $view_y,  float  $view_z, float  $reference_x, float  $reference_y, float  $reference_z, float
       $twist)

DESCRIPTION

	Defines a viewing transformation by giving the viewing position and the coordinates of a reference point in the scene.

PARAMETERS

	      o $view_x
		- x-coordinate for the viewing position

	      o $view_y
		- y-coordinate for the viewing position

	      o $view_z
		- z-coordinate for the viewing position

	      o $reference_x
		- x-coordinate for the reference point

	      o $reference_y
		- y-coordinate for the reference point

	      o $reference_z
		- z-coordinate for the reference point

	      o $twist
		- Controls the rotation along with viewer's z axis.

RETURN VALUES

	No value is returned.

EXAMPLES

       Example #1

	      A simple 3D-rotation around a text

	      <?php

	      header('Content-type: application/x-shockwave-flash');

	      swf_openfile("php://stdout", 320, 200, 25, 1, 1, 1);

	      swf_ortho(-100, 100, -100, 100, -100, 100); // create 3D coordinates

	      swf_definefont(0, "Pix3");
	      swf_addcolor(0, 0, 0, 1);
	      swf_fontsize(10);
	      swf_fonttracking(0.2);

	      for ($i = 0; $i < 628; $i += 8) {
		  $j = $i / 100;
		  swf_pushmatrix();
		  swf_translate(0, 0, 0);
		  swf_perspective(100, 1, 0, 10);
		  swf_lookat(sin($j) * 60, 50, cos($j) * 60, 0, 0, 0, 0);

		  swf_definetext (1, 'HotKey@', 0);
		  swf_translate(-50,0,0);

		  swf_placeobject(1,10);

		  swf_definetext(2, 'example.com', 0);
		  swf_translate(55, 0, 0);
		  swf_placeobject(2, 11);

		  swf_showframe();
		  swf_removeobject(10);
		  swf_removeobject(11);
		  swf_popmatrix();
	      }

	      swf_closefile();
	      ?>

PHP Documentation Group 													     SWF_LOOKAT(3)

CAIRO_CURVE_TO(3)							 1							 CAIRO_CURVE_TO(3)

CairoContext::curveTo - Adds a curve

       Object oriented style (method):

SYNOPSIS

       public void CairoContext::curveTo (float  $x1, float  $y1, float  $x2, float  $y2, float  $x3, float  $y3)

DESCRIPTION

       Procedural style:
       void cairo_curve_to (CairoContext  $context, float  $x1, float  $y1, float  $x2, float  $y2, float  $x3, float  $y3)

	Adds  a cubic Bezier spline to the path from the current point to position $x3 ,$y3 in user-space coordinates, using $x1, $y1 and $x2, $y2
       as the control points. After this call the current point will be $x3, $y3.

	If there is no current point before the call to CairoContext::curveTo this function will behave as if preceded	by  a  call  to  CairoCon-
       text::moveTo ($x1, $y1).

PARAMETERS

	      o $context
		- A valid CairoContext object created with CairoContext::__construct or cairo_create(3)

	      o $x1
		- First control point in the x axis for the curve

	      o $y1
		- First control point in the y axis for the curve

	      o $x2
		- Second control point in x axis for the curve

	      o $y2
		- Second control point in y axis for the curve

	      o $x3
		- Final point in the x axis for the curve

	      o $y3
		- Final point in the y axis for the curve

RETURN VALUES

	No value is returned.

EXAMPLES

       Example #1

	      Object oriented style

	      <?php
	      $s = new CairoImageSurface(CairoFormat::ARGB32, 100, 100);
	      $c = new CairoContext($s);

	      $c->setSourceRgb(0, 0, 0);

	      $c->paint();

	      $c->moveTo(10, 50);
	      $c->setLineWidth(5);
	      $c->setSourceRgb(.1, 0, 1);
	      $c->curveTo(20, 80, 80, 20, 90, 50);
	      $c->stroke();

	      $s->writeToPng(dirname(__FILE__) . '/curveTo.png');
	      ?>

       Example #2

	      Procedural style

	      <?php

	      $s = cairo_image_surface_create(CAIRO_SURFACE_TYPE_IMAGE, 100, 100);
	      $c = cairo_create($s);

	      cairo_set_source_rgb($c, 0, 0, 0);

	      cairo_paint($c);

	      cairo_move_to($c, 10, 50);
	      cairo_set_line_width($c, 5);
	      cairo_set_source_rgb($c, .1, 0, 1);
	      cairo_curve_to($c, 20, 80, 80, 20, 90, 50);
	      cairo_stroke($c);

	      cairo_surface_write_to_png($s, dirname(__FILE__) . '/curve_to.png');
	      ?>

SEE ALSO

       CairoContext::moveTo.

PHP Documentation Group 													 CAIRO_CURVE_TO(3)