29 lines
1.6 KiB
Text
29 lines
1.6 KiB
Text
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first design approach notes, started 2014-12-31 abandoned 2015-01-03
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geo + uvs + color data for all layers on a frame are precomputed for each frame. when renderables animate they just bind different arrays
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art.vert_array, art.elem_array: geo is same across all frames
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ArtFrame.uv/fg/bg_array: uv/fg/bg color arrays for all layers
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Art.init(): initialize lists for 1 frame with 1 blank layer of specified size, update all tiles' char/fg/bg
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ArtFromDisk.init(): populate lists from saved data, update all tiles' char/fg/bg
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art.build_geo(): create vert and elem arrays for given size and update all tiles' char/colors - okay if it's slower because this only happens on init/resize
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ArtFrame.build_arrays(): creates uv/fgcolor/bgcolor arrays
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art.set_char_index/color_at(): only called by user or sim edits, update internal lists only, add each changed tile to "to update" lists: "characters to update", "fg/bg colors to update"
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art.update(): called from app.update(): process "to update" lists, calling art.update_char_array etc as needed (theoretrically this could be parallelized if lots of chars + colors are changing?)
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art.update_char_array: computes index into uv array for given tile, sets uvs
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art.update_color_array(fg=True): computers index into color array for given tile, sets color data
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art.do_test(): add layers and frames, set chars and colors manually
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renderable.update(): called from app.update(): has our art updated, or is it time to swap in a new animation frame? update buffers from art's arrays accordingly
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- investigate whether storing color (vec4) per vertex is better than color index (U of 1D color texture?)
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