<?php # Draw some simple shapes print "Drawing some basic shapes\n"; require "simple.php"; $cmap = new_ColorMap(); $f = new_FrameBuffer(400, 400); # Clear the picture FrameBuffer_clear($f, BLACK); # Make a red box FrameBuffer_box($f, 40, 40, 200, 200, RED); # Make a blue circle FrameBuffer_circle($f, 200, 200, 40, BLUE); # Make green line FrameBuffer_line($f, 10, 390, 390, 200, GREEN); # Write an image out to disk FrameBuffer_writeGIF($f, $cmap, "image.gif"); print "Wrote image.gif\n"; delete_FrameBuffer($f); delete_ColorMap($cmap); ?>
function func($x, $y)
{
return 5 * cos(2 * sqrt($x * $x + $y * $y)) * exp(-0.3 * sqrt($x * $x + $y * $y));
}
# Here are some plotting parameters
$xmin = -5.0;
$xmax = 5.0;
$ymin = -5.0;
$ymax = 5.0;
$zmin = -5.0;
$zmax = 5.0;
# Grid resolution
$nxpoints = 60;
$nypoints = 60;
$cmap = new_ColorMap("cmap");
$frame = new_FrameBuffer(500, 500);
FrameBuffer_clear($frame, BLACK);
$p3 = new_Plot3D($frame, $xmin, $ymin, $zmin, $xmax, $ymax, $zmax);
Plot3D_lookat($p3, 2 * ($zmax - $zmin));
Plot3D_autoperspective($p3, 40);
Plot3D_rotu($p3, 60);
Plot3D_rotr($p3, 30);
Plot3D_rotd($p3, 10);
function drawsolid()
{
global $p3;
global $xmax;
global $xmin;
global $ymax;
global $ymin;
global $zmin;