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- function ng_bighalo(
- \ clip clp,
- \ string text,
- \ float "x",
- \ float "y",
- \ int "first_frame",
- \ int "last_frame",
- \ string "font",
- \ float "size",
- \ int "text_color",
- \ int "halo_color",
- \ int "align",
- \ int "spc",
- \ int "lsp",
- \ float "font_width",
- \ float "font_angle",
- \ int "halo_radius",
- \ string "mode",
- \ string "halo",
- \ string "shadow"
- \){
- #Version 16-17 2012/12/1
- # - added circle_12 as default
- # - reworked math to avoid bitwise functions that are only
- # availible in experimental builds
- #Version 15 2012/12/1
- # - drop shadow added
- # - halo_radius still works, but calculating the points of
- # a hollow circle for halo is much faster
- # - mode is depricated since memo-ing isn't as needed
- first_frame = default(first_frame, 0)
- last_frame = default( last_frame, first_frame + 299)
- font = default( font, "Ariel")
- size = default( size, 112)
- x = default( x, -1)
- y = default( y, -1)
- text_color = default( text_color, $00DDDDDD)
- halo_color = default( halo_color, $80000000)
- align = default( align, 5)
- spc = default( spc, 0)
- lsp = default( lsp, 0)
- font_width = default( font_width, 0)
- font_angle = default( font_angle, 0)
- shadow = default( shadow, " -4 -8")
- w = clp.width
- h = clp.height
- ###
- ###
- ##
- #
- #
- #
- #
- #
- #
- #
- #
- #
- # #
- circle_12="0 0 "+\
- "12 0 0 12 -12 0 0 -12 "+\
- "1 12 2 12 3 11 4 11 5 11 6 10 7 10 8 9 "+\
- "12 1 12 2 11 3 11 4 11 5 10 6 10 7 9 8 "+\
- "-1 12 -2 12 -3 11 -4 11 -5 11 -6 10 -7 10 -8 9 "+\
- "-12 1 -12 2 -11 3 -11 4 -11 5 -10 6 -10 7 -9 8 "+\
- "-1 -12 -2 -12 -3 -11 -4 -11 -5 -11 -6 -10 -7 -10 -8 -9 "+\
- "-12 -1 -12 -2 -11 -3 -11 -4 -11 -5 -10 -6 -10 -7 -9 -8 "+\
- "1 -12 2 -12 3 -11 4 -11 5 -11 6 -10 7 -10 8 -9 "+\
- "12 -1 12 -2 11 -3 11 -4 11 -5 10 -6 10 -7 9 -8 "
- halo = (defined(halo_radius)) ? mt_circle(halo_radius) : circle_12
- invis = BlankClip(1, w, h, pixel_type="YV12")
- tm = Subtitle(invis, text, x, y, 0, 0, font, size, $00FFFFFF,\
- 0, align, spc, lsp, font_width, font_angle)
- text_mask = tm.mt_expand(mode="0 0 "+shadow, chroma="-128")
- halo_mask = text_mask.mt_expand(mode=halo, chroma="-128")
- h0 = halo_color%$01000000
- h_color = (h0>=0) ? h0 : $01000000+h0
- t0 = text_color%$01000000
- t_color = (t0>=0) ? t0 : $01000000+t0
- h_alpha = (halo_color>=0) ? 255-(halo_color/$01000000) : (-halo_color-1)/$01000000
- t_alpha = (text_color>=0) ? 255-(text_color/$01000000) : (-text_color-1)/$01000000
- lut_str = string(h_alpha)+ " x * 255 / " +string(t_alpha)+\
- " " +string(h_alpha)+ " - y * 255 / +"
- alpha_mask = mt_lutxy(halo_mask, text_mask, lut_str)
- hc = BlankClip(1, w, h, color=h_color)
- tc = Subtitle(hc, text, x, y, 0, 0, font, size, t_color,\
- 0, align, spc, lsp, font_width, font_angle)
- overlay = tc.Mask(alpha_mask.ConvertToRGB32())
- clp.ApplyRange(first_frame, last_frame, "Layer", overlay)
- }
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