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skeleton of strans_check()

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nick black 2020-10-28 01:49:37 -04:00 committed by Nick Black
parent d6e190428e
commit 597355ec4f
1 changed files with 50 additions and 7 deletions
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57
src/lib/blit.c
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@ -286,6 +286,7 @@ quadrant_solver(uint32_t tl, uint32_t tr, uint32_t bl, uint32_t br,
// of priority -- if even one quadrant is transparent, we will have a
// transparent background, and lerp the rest together for foreground. we thus
// have a 16-way conditional tree in which each EGC must show up exactly once.
// FIXME we ought be able to just build up a bitstring and use it as an index!
static inline const char*
qtrans_check(cell* c, bool bgr, bool blendcolors,
const unsigned char* rgbbase_tl, const unsigned char* rgbbase_tr,
@ -448,6 +449,14 @@ quadrant_blit(ncplane* nc, int placey, int placex, int linesize,
return total;
}
// FIXME needs left- and right- halves, needs sorting
static const char* sex[64] = {
" ", "🬀", "🬁", "🬂", "🬃", "🬄", "🬅", "🬆", "🬇", "🬈", "🬉", "🬊", "🬋", "🬌", "🬍",
"🬎", "🬏", "🬐", "🬑", "🬒", "🬓", "🬔", "🬕", "🬖", "🬗", "🬘", "🬙", "🬚", "🬛", "🬜",
"🬝", "🬞", "🬟", "🬠", "🬡", "🬢", "🬣", "🬤", "🬥", "🬦", "🬧", "🬨", "🬩", "🬪", "🬫",
"🬬", "🬭", "🬮", "🬯", "🬰", "🬱", "🬲", "🬳", "🬴", "🬵", "🬶", "🬷", "🬸", "🬹", "🬺",
"🬻", "█", "▌", "▐",
};
// sextant check for transparency. returns an EGC if we found transparent pixels
// and have solved for colors (this EGC ought then be loaded into the cell).
// returns NULL otherwise. transparency trumps everything else in terms of
@ -456,11 +465,45 @@ quadrant_blit(ncplane* nc, int placey, int placex, int linesize,
// conditional tree in which each EGC must show up exactly once.
static inline const char*
strans_check(cell* c, bool bgr, bool blendcolors,
const unsigned char* rgbbase_l1, const unsigned char* rgbbase_r1,
const unsigned char* rgbbase_l2, const unsigned char* rgbbase_r2,
const unsigned char* rgbbase_l3, const unsigned char* rgbbase_r3){
// FIXME
return NULL;
const uint8_t* rgbbase_l1, const uint8_t* rgbbase_r1,
const uint8_t* rgbbase_l2, const uint8_t* rgbbase_r2,
const uint8_t* rgbbase_l3, const uint8_t* rgbbase_r3){
const int rpos = bgr ? 2 : 0;
const int bpos = bgr ? 0 : 2;
unsigned bitstring = 0;
if(ffmpeg_trans_p(bgr, rgbbase_l1[3])){
bitstring |= 1u;
}
if(ffmpeg_trans_p(bgr, rgbbase_r1[3])){
bitstring |= 2u;
}
if(ffmpeg_trans_p(bgr, rgbbase_l2[3])){
bitstring |= 4u;
}
if(ffmpeg_trans_p(bgr, rgbbase_r2[3])){
bitstring |= 8u;
}
if(ffmpeg_trans_p(bgr, rgbbase_l3[3])){
bitstring |= 16u;
}
if(ffmpeg_trans_p(bgr, rgbbase_r3[3])){
bitstring |= 32u;
}
if(!bitstring){
return NULL;
}
assert(64 == sizeof(sex) / sizeof(*sex));
const char* egc = sex[bitstring];
cell_set_bg_alpha(c, CELL_ALPHA_TRANSPARENT);
//fprintf(stderr, "bitstring: %u egcp: %p egc: %s\n", bitstring, egc, egc ? egc : "null");
if(*egc == ' '){
cell_set_fg_alpha(c, CELL_ALPHA_TRANSPARENT);
return "";
}else if(blendcolors){
cell_set_fg_alpha(c, CELL_ALPHA_BLEND);
}
// FIXME lerp the opaque pixels together to get the foreground color
return egc;
}
// sextant blitter. maps 3x2 to each cell. since we only have two colors at
@ -513,7 +556,7 @@ sextant_blit(ncplane* nc, int placey, int placex, int linesize,
const char* egc = strans_check(c, bgr, blendcolors, rgbbase_l1, rgbbase_r1,
rgbbase_l2, rgbbase_r2, rgbbase_l3, rgbbase_r3);
if(egc == NULL){
// FIXME
egc = "*"; // FIXME
}
if(*egc && pool_blit_direct(&nc->pool, c, egc, strlen(egc), 1) <= 0){
return -1;
@ -671,7 +714,7 @@ const struct blitset notcurses_blitters[] = {
{ .geom = NCBLIT_2x2, .width = 2, .height = 2, .egcs = L" ▗▐▖▄▟▌▙█",
.blit = quadrant_blit, .name = "quadblitter", .fill = false, },
{ .geom = NCBLIT_3x2, .width = 2, .height = 3, .egcs = L" 🬀🬁🬂🬃🬄🬅🬆🬇🬈🬉🬊🬋🬌🬍🬎🬏🬐🬑🬒🬓🬔🬕🬖🬗🬘🬙🬚🬛🬜🬝🬞🬟🬠🬡🬢🬣🬤🬥🬦🬧🬨🬩🬪🬫🬬🬭🬮🬯🬰🬱🬲🬳🬴🬵🬶🬷🬸🬹🬺🬻█",
.blit = sextant_blit, .name = "hexblitter", .fill = false, },
.blit = sextant_blit, .name = "sexblitter", .fill = false, },
{ .geom = NCBLIT_4x1, .width = 1, .height = 4, .egcs = L" ▂▄▆█",
.blit = tria_blit, .name = "fourstep", .fill = false, },
{ .geom = NCBLIT_BRAILLE, .width = 2, .height = 4, .egcs = L"⠀⢀⢠⢰⢸⡀⣀⣠⣰⣸⡄⣄⣤⣴⣼⡆⣆⣦⣶⣾⡇⣇⣧⣷⣿",