図形のコピー: 作図例9 いろいろな曲線 ヘルプ

ドット数(幅高)形式(gifjpg)
set_scale($scale = 10, $org_x_percent = 50, $org_y_percent = 50); allocate_color('gray'); draw_xyaxis(); allocate_color('black'); function ellipse_x($t) {$cx = 7; $cy = 4; $a = 5; $b = 2.5; return $a * cos($t) + $cx;} function ellipse_y($t) {$cx = 7; $cy = 4; $a = 5; $b = 2.5; return $b * sin($t) + $cy;} df_xt_yt('ellipse_x', 'ellipse_y', 0, 2 * M_PI, $div = 32); draw_formula("{lbrace}matrix{2}{1}{{x=a cos t}{x=b sin t}}", $size = 12, $px = 7, $py = 10, $o_pos = O_POS_MIDDLE_CENTER); allocate_color('red'); function star_x($t) {$cx = -7; $cy = -7; $r = 5; $s = 1.5; return ($r + $s * sin($t * 5)) * cos($t) + $cx;} function star_y($t) {$cx = -7; $cy = -7; $r = 5; $s = 1.5; return ($r + $s * sin($t * 5)) * sin($t) + $cy;} df_xt_yt('star_x', 'star_y', 0, 2 * M_PI, $div = 64); allocate_text_color('blue'); draw_formula("{lbrace}matrix{2}{1}{{x=(r + s sin(5t)) cos t}{x=(r + s sin(5t)) sin t}}", $size = 12, $px = -15, $py = 0, $o_pos = O_POS_UP_LEFT); allocate_color('green'); function roll_x($t) {$cx = -7; $cy = 7; $r = 1; return ($r * exp($t / (3 * 2 * M_PI))) * cos($t) + $cx;} function roll_y($t) {$cx = -7; $cy = 7; $r = 1; return ($r * exp($t / (3 * 2 * M_PI))) * sin($t) + $cy;} df_xt_yt('roll_x', 'roll_y', 0, 11 * M_PI, $div = 256); draw_formula("{lbrace}matrix{2}{1}{{x=e^{t/{6 pi}} cos t}{x=e^{t/{6 pi}} sin t}}", $size = 12, $px = -15, $py = 15, $o_pos = O_POS_UP_LEFT); function fractale($x1, $y1, $x2, $y2, $nest) { if($nest > 0){ --$nest; $px = ($x1 * 2 + $x2) / 3; $py = ($y1 * 2 + $y2) / 3; $qx = ($x1 + $x2 * 2) / 3; $qy = ($y1 + $y2 * 2) / 3; $u = $x2 - $x1; $v = $y2 - $y1; $len = (unit_vector($u, $v) / 3) * sqrt(3) / 2; rot90_vec($u, $v, $u90, $v90); $rx = ($x1 + $x2) / 2 + $len * $u90; $ry = ($y1 + $y2) / 2 + $len * $v90; fractale($x1, $y1, $px, $py, $nest); fractale($px, $py, $rx, $ry, $nest); fractale($rx, $ry, $qx, $qy, $nest); fractale($qx, $qy, $x2, $y2, $nest); }else{ draw_line($x1, $y1, $x2, $y2); } } for($i = 0; $i <= 4; ++$i){ $y = -14.8 + $i * 2.6; fractale(0, $y, 15, $y, $i); } allocate_text_color('blue'); draw_text('Fractale', $x = 7.5, $y = -14, $o_pos = O_POS_LOW_CENTER);
テンプレートを選択するとプログラムに追加されます。 set_scale(...); allocate_color('black'); allocate_color('gray'); allocate_color('red'); allocate_color('blue'); allocate_color('green'); allocate_color('purple'); allocate_bgcolor('white'); transparent_bgcolor(); set_thick($thick = 1); set_dashlen($dashlen = 7); set_arrow_size(...); draw_line(...); draw_horizontal($y); draw_vertical($x); draw_dash_line(...); draw_rect(...); draw_arrow_head(...); draw_xaxis(...); draw_yaxis(...); draw_xyaxis(); draw_circle(...); draw_arc_deg(...); draw_arc(...); draw_dash_arc(...); M_PI = 3.1415926535898 M_PI_2 = pi/2 M_PI_4 = pi/4 fill_rect(...); fill_circle(...); fill_arc_deg(...); fill_triangle(...); fill_quadrangle(...); fill_polygon(); fill_toborder($x, $y, $border_color_x, $border_color_y); allocate_text_color('black'); allocate_text_color('gray'); allocate_text_color('red'); allocate_text_color('blue'); allocate_text_color('green'); allocate_text_color('purple'); allocate_text_bgcolor('white'); transparent_text_bgcolor(); set_text_size($text_size); set_text_margin($text_margin); set_mark_size($mark_size); draw_text(...); O_POS_LOW_LEFT O_POS_LOW_RIGHT O_POS_UP_RIGHT O_POS_UP_LEFT O_POS_LOW_CENTER O_POS_MIDDLE_RIGHT O_POS_UP_CENTER O_POS_MIDDLE_LEFT O_POS_MIDDLE_CENTER get_o_pos_by_ang($ang); draw_formula(...); ARC_TYPE_NONE ARC_TYPE_SOLID ARC_TYPE_DASH BEG_TYPE_ARROW END_TYPE_ARROW draw_arc_mark(...); draw_corner_mark(...); draw_marked_triangle(...); CMARK_NONE 0 CMARK_1_ARC 1 CMARK_2_ARC 2 CMARK_D_ARC 3 CMARK_1_PIE 4 CMARK_2_PIE 5 CMARK_D_PIE 6 CMARK_SQUARE CMARK_CROSS CMARK_CIRCLE CMARK_DOT draw_mark(...); draw_mark_on_line(...); draw_mark_on_circle(...); MARK_1_LINE MARK_2_LINE MARK_3_LINE MARK_SQUARE MARK_CROSS MARK_CIRCLE MARK_DOT set_x_def_range(...); df1_ax_b($a, $b); df1_x_y($x, $y); df1_2p($x1, $y1, $x2, $y2); df2_ax2_bx_c(...); df2_ax_p2_q(...); df2_a_x_al_x_be(...); df_y_fx($y_fx); df_xt_yt(...); unit_vector(...); calc_angle(...); normalize_ang($ang); calc_da(...); calc_intersec_pt_of_lines(...); calc_intersec_pt_of_lns(...); rot90_vec(...); rot_vec(...); calc_perpendicular_bisector(...); calc_distance(...); calc_circumscribed_circle(...); calc_didtance_to_line(...); calc_foot_of_perpendicular_line(...); calc_parallel_line(...); calc_foot_of_perpendicular_circle(...); calc_intersec_pts_of_line_circle(...); calc_intersec_pts_of_circles(...); calc_inscribed_circle(...); calc_2p_arc(...); calc_3dview(...); clear_canvas(); set_alphablending($alpha = 50); set_antialias($antialias = true); transparent_gif_bgcolor(); xf($x) x_rev($x) yf($y) y_rev($y)
作図プログラムをコンパイルして図形を仮表示する

仮表示

---

作図プログラムをサーバに保存するには、やる勉にログインしてください。

---

日付順 名前順

---

1. 図形の新規作成
2. ログイン