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rotate_channels: handle top half block #707

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nick black 2020-06-12 09:23:33 -04:00
parent 03c748476b
commit 5bbd183db4
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GPG Key ID: 5F43400C21CBFACC
2 changed files with 17 additions and 13 deletions
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28
src/lib/fill.c
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@ -303,26 +303,28 @@ int ncplane_format(struct ncplane* n, int ystop, int xstop, uint32_t attrword){
return total;
}
// if we're a lower block, reverse the channels. if we're a space, set both to
// if we're a half block, reverse the channels. if we're a space, set both to
// the background. if we're a full block, set both to the foreground.
static void
static int
rotate_channels(ncplane* src, const cell* c, uint32_t* fchan, uint32_t* bchan){
if(cell_simple_p(c)){
if(!isgraph(c->gcluster)){
*fchan = *bchan;
}
return;
return 0;
}
const char* origc = cell_extended_gcluster(src, c);
if(strcmp(origc, "▄") == 0){
if(strcmp(origc, "▄") == 0 || strcmp(origc, "▄")){
uint32_t tmp = *fchan;
*fchan = *bchan;
*bchan = tmp;
return;
return 0;
}else if(strcmp(origc, "█") == 0){
*bchan = *fchan;
return;
return 0;
}
logerror(src->nc, "Invalid EGC for rotation [%s]\n", origc);
return -1;
}
static int
@ -392,8 +394,9 @@ rotate_2x1_cw(ncplane* src, ncplane* dst, int srcy, int srcx, int dsty, int dstx
uint32_t c2b = cell_bchannel(&c2);
uint32_t c1t = cell_fchannel(&c1);
uint32_t c2t = cell_fchannel(&c2);
rotate_channels(src, &c1, &c1t, &c1b);
rotate_channels(src, &c2, &c2t, &c2b);
int ret = 0;
ret |= rotate_channels(src, &c1, &c1t, &c1b);
ret |= rotate_channels(src, &c2, &c2t, &c2b);
// right char comes from two tops. left char comes from two bottoms. if
// they're the same channel, they become a:
//
@ -403,7 +406,7 @@ rotate_2x1_cw(ncplane* src, ncplane* dst, int srcy, int srcx, int dsty, int dstx
ncplane_cursor_move_yx(dst, dsty, dstx);
rotate_output(dst, c1b, c2b);
rotate_output(dst, c1t, c2t);
return 0;
return ret;
}
static int
@ -421,12 +424,13 @@ rotate_2x1_ccw(ncplane* src, ncplane* dst, int srcy, int srcx, int dsty, int dst
unsigned c2b = cell_bchannel(&c2);
unsigned c1t = cell_fchannel(&c1);
unsigned c2t = cell_fchannel(&c2);
rotate_channels(src, &c1, &c1t, &c1b);
rotate_channels(src, &c2, &c2t, &c2b);
int ret = 0;
ret |= rotate_channels(src, &c1, &c1t, &c1b);
ret |= rotate_channels(src, &c2, &c2t, &c2b);
ncplane_cursor_move_yx(dst, dsty, dstx);
rotate_output(dst, c1t, c2t);
rotate_output(dst, c1b, c2b);
return 0;
return ret;
}
// copy 'newp' into 'n' after resizing 'n' to match 'newp'

2
src/lib/internal.h
View File

@ -760,7 +760,7 @@ calc_gradient_channels(uint64_t* channels, uint64_t ul, uint64_t ur,
void nclog(const char* fmt, ...);
// logging
#define logerror(nc, fmt, ...) do{ if(nc->loglevel >= NCLOGLEVEL_ERROR){ nclog(__FILE__ "%d" fmt, __LINE__, ##__VA_ARGS__); } }while(0);
#define logerror(nc, fmt, ...) do{ if(nc->loglevel >= NCLOGLEVEL_ERROR){ nclog(__FILE__ ":%d:" fmt, __LINE__, ##__VA_ARGS__); } }while(0);
#ifdef __cplusplus
}