width := 280 height := 100 iterations := 100 xmin := -2.0 xmax := 0.5 ymin := -1.0 ymax := 1.0 // Some further coordinates: /*iterations := 1000 xmin := -0.9072945999 xmax := -0.8984310833 ymin := 0.2304178999 ymax := 0.2370858666*/ /*iterations := 100 xmin := -0.193596288 xmax := -0.119260320 ymin := 1.006960992 ymax := 1.062687264*/ /*iterations := 800 xmin := -0.1675326254 xmax := -0.1675148625 ymin := 1.0413005672 ymax := 1.0413138086*/ /*iterations := 918 xmin := -0.7506201104 xmax := -0.7503409687 ymin := 0.0170447020 ymax := 0.0172540583*/ /*iterations := 400 xmin := -0.7548484315 xmax := -0.7540548595 ymin := 0.0530077004 ymax := 0.0536039518*/ y := 0 while y < height { c_im := (float(height - y) / float(height)) * (ymax - ymin) + ymin x := 0 while x < width { c_re := (float(x) / float(width)) * (xmax - xmin) + xmin z_re := 0.0 z_im := 0.0 it := 0 loop := true while it < iterations && loop { /* z = z*z + c */ /* (a + bi)^2 = a^2 + 2abi - b^2 */ z_re_tmp := z_re * z_re - z_im * z_im + c_re z_im = 2.0 * z_re * z_im + c_im z_re = z_re_tmp /* Break if the number shoots off to infinity. */ if z_re * z_re + z_im * z_im > 4.0 { loop = false } it = it + 1 } if it <= iterations / 5 put(' ') else if it <= iterations / 5 * 2 put('.') else if it <= iterations / 5 * 3 put(',') else if it <= iterations / 5 * 4 put('*') else if it < iterations put('+') else if it == iterations put('#') x = x + 1 } put('\n') y = y + 1 }