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図形のコピー: 正四面体ヘルプ

ドット数(幅高)形式(gifjpg)

set_scale($scale = 10, $org_x_percent = 50, $org_y_percent = 50);
$scr_w = 30;
$len = 8;
$h = $len * sqrt(3) / 2;
$m = $h * 2 / 3;
$v = sqrt($h * $h - $m * $m);
set_text_size($text_size = 10);
draw_text('平面図', - $scr_w / 2, $scr_w / 2, O_POS_UP_LEFT, false);
set_text_size($text_size = 12);
$ax = - $scr_w / 4; 
$ay = $scr_w / 4;
$bx = $ax - $len / 2;
$by = $ay - $h / 3; 
$cx = $ax + $len / 2;
$cy = $by;
$dx = $ax;
$dy = $ay + $h * 2 / 3;
draw_line($ax, $ay, $bx, $by);
draw_line($ax, $ay, $cx, $cy);
draw_line($ax, $ay, $dx, $dy);

allocate_text_color('black');
draw_text('A(H)', $ax, $ay, O_POS_LOW_RIGHT, false);
draw_marked_triangle($bx, $by, $cx, $cy, $dx, $dy,
$type_a = 0, $type_b = 0, $type_c = 0, 
$text_a = '', $text_b = '', $text_c = '', 
$text_ops_a = 'B', $text_ops_b = 'C', $text_ops_c = 'D', 
$italic = true, $italic_ops = false, $r = 10);
draw_arc_mark($tx, $ty, $bx, $by, $cx, $cy, $text = 'a', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 1, $text_hole_rate = 1.7);

set_text_size($text_size = 10);
draw_text('正面図', - $scr_w / 2, 0, O_POS_UP_LEFT, false);
set_text_size($text_size = 12);
$ay = - $scr_w / 4 + $v / 2 + 2;
$by = $ay - $v;
$cy = $by;
$dy = $by;
draw_marked_triangle($ax, $ay, $bx, $by, $cx, $cy, 
$type_a = 0, $type_b = 0, $type_c = 0, 
$text_a = '', $text_b = '', $text_c = '', 
$text_ops_a = 'A', $text_ops_b = 'B', $text_ops_c = 'C', 
$italic = true, $italic_ops = false, $r = 10);
draw_dash_line($ax, $ay, $dx, $dy);
draw_arc_mark($tx, $ty, $bx, $by, $cx, $cy, $text = 'a', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 2, $text_hole_rate = 1.7);
set_text_margin($text_margin = 2);
draw_text('H(D)', $dx, $dy, O_POS_UP_CENTER, false);
set_text_margin($text_margin = 0);

set_text_size($text_size = 10);
draw_text('側面図', 0, 0, O_POS_UP_LEFT, false);
set_text_size($text_size = 12);
$ax = $scr_w / 4 - $h / 6;
$bx = $ax - $h / 3;
$cx = $bx;
$dx = $bx + $h;
draw_marked_triangle($ax, $ay, $cx, $cy, $dx, $dy, 
$type_a = 0, $type_b = 0, $type_c = 0, 
$text_a = '', $text_b = '', $text_c = '', 
$text_ops_a = 'A', $text_ops_b = 'C(B)', $text_ops_c = 'D', 
$italic = true, $italic_ops = false, $r = 10);
draw_arc_mark($tx, $ty, $dx, $dy, $ax, $ay, $text = 'a', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 1, $text_hole_rate = 1.7);
$hx = $ax;
$hy = $by;
draw_dash_line($ax, $ay, $hx, $hy);
set_text_margin($text_margin = 2);
draw_text('H', $hx, $hy, O_POS_UP_CENTER, false);
set_text_margin($text_margin = 0);
allocate_color('blue');
allocate_text_color('blue');
draw_arc_mark($tx, $ty, $cx, $cy, $dx, $dy, $text = '', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 1.5, $text_hole_rate = 0);
$ux = 2;
$uy = - $scr_w / 2 + 3;
draw_dash_line($tx, $ty, $ux, $uy);
draw_formula('{sqrt{3}/2 a}', $size = 12, $ux, $uy, O_POS_MIDDLE_RIGHT);
allocate_color('green');
allocate_text_color('green');
draw_arc_mark($tx, $ty, $hx, $hy, $dx, $dy, $text = '', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 0.8, $text_hole_rate = 0);
draw_formula('{sqrt{3}/3 a}', $size = 12, $tx, $ty, O_POS_UP_CENTER);
allocate_color('red');
allocate_text_color('red');
draw_arc_mark($tx, $ty, $ax, $ay, $hx, $hy, $text = '', $italic = true, $arc_type = ARC_TYPE_DASH, $width_rate = 0.8, $text_hole_rate = 0);
draw_formula('{sqrt{6}/3 a}', $size = 12, $tx, $ty, O_POS_MIDDLE_RIGHT);
allocate_color('black');
allocate_text_color('black');

set_text_size($text_size = 10);
draw_text('立体図', 0, $scr_w / 2, O_POS_UP_LEFT, false);
set_text_size($text_size = 12);
$ax3 = $len / 2;
$ay3 = $h / 3;
$az3 = $v;
$bx3 = 0;
$by3 = 0;
$bz3 = 0;
$cx3 = $len;
$cy3 = 0;
$cz3 = 0;
$dx3 = $len / 2;
$dy3 = $h;
$dz3 = 0;
$hx3 = $ax3;
$hy3 = $ay3;
$hz3 = 0;

$ang_theta = -deg2rad(50);
$ang_varphi = deg2rad(20);
$view_r = $len * 5;
$f_x = $view_r * 0.5 * cos($ang_theta);
$f_y = $view_r * 0.5 * sin($ang_theta);
$f_z = $view_r * 0.5 * sin($ang_varphi);
$scale2 = 1.8;
$rot2 = deg2rad(2);
$m2x = $scr_w / 13;
$m2y = $scr_w / 5;

calc_3dview($ax, $ay, $scale2, $rot2, $m2x, $m2y, $ax3, $ay3, $az3, $f_x, $f_y, $f_z, $view_r, $ang_theta, $ang_varphi);
calc_3dview($bx, $by, $scale2, $rot2, $m2x, $m2y, $bx3, $by3, $bz3, $f_x, $f_y, $f_z, $view_r, $ang_theta, $ang_varphi);
calc_3dview($cx, $cy, $scale2, $rot2, $m2x, $m2y, $cx3, $cy3, $cz3, $f_x, $f_y, $f_z, $view_r, $ang_theta, $ang_varphi);
calc_3dview($dx, $dy, $scale2, $rot2, $m2x, $m2y, $dx3, $dy3, $dz3, $f_x, $f_y, $f_z, $view_r, $ang_theta, $ang_varphi);
calc_3dview($hx, $hy, $scale2, $rot2, $m2x, $m2y, $hx3, $hy3, $hz3, $f_x, $f_y, $f_z, $view_r, $ang_theta, $ang_varphi);
draw_line($ax, $ay, $bx, $by);
draw_line($ax, $ay, $cx, $cy);
draw_line($ax, $ay, $dx, $dy);
draw_line($bx, $by, $cx, $cy);
draw_dash_line($bx, $by, $dx, $dy);
draw_line($cx, $cy, $dx, $dy);
allocate_color('green');
set_thick($thick = 3);
draw_line($dx, $dy, $hx, $hy);
set_thick($thick = 1);
allocate_color('blue');
draw_line($dx, $dy, ($bx + $cx) / 2, ($by + $cy) / 2);
allocate_color('red');
draw_line($ax, $ay, $hx, $hy);

draw_text('A', $ax, $ay, O_POS_LOW_CENTER, false);
draw_text('B', $bx, $by, O_POS_UP_RIGHT, false);
draw_text('C', $cx, $cy, O_POS_UP_LEFT, false);
draw_text('D', $dx, $dy, O_POS_LOW_LEFT, false);

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