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LOLWUT: version 6: improve rithm of the image.

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This commit is contained in:
antirez 2019-10-07 18:41:29 +02:00
parent c10889150e
commit 58cdc054e3
1 changed files with 24 additions and 16 deletions
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40
src/lolwut6.c
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@ -62,8 +62,8 @@ static sds renderCanvas(lwCanvas *canvas) {
} }
/* Draw a skyscraper on the canvas, according to the parameters in the /* Draw a skyscraper on the canvas, according to the parameters in the
* 'skyscraper' structure. Window colors are random and are always selected * 'skyscraper' structure. Window colors are random and are always one
* to be different than the color of the skyscraper itsefl. */ * of the two grays. */
struct skyscraper { struct skyscraper {
int xoff; /* X offset. */ int xoff; /* X offset. */
int width; /* Pixels width. */ int width; /* Pixels width. */
@ -100,7 +100,7 @@ void generateSkyscraper(lwCanvas *canvas, struct skyscraper *si) {
* (characters) are not square. */ * (characters) are not square. */
if (relx/2 % 2 && rely % 2) { if (relx/2 % 2 && rely % 2) {
do { do {
color = rand() % 4; color = 1 + rand() % 2;
} while (color == si->color); } while (color == si->color);
/* Except we want adjacent pixels creating the same /* Except we want adjacent pixels creating the same
* window to be the same color. */ * window to be the same color. */
@ -117,17 +117,25 @@ void generateSkyline(lwCanvas *canvas) {
struct skyscraper si; struct skyscraper si;
/* First draw the background skyscraper without windows, using the /* First draw the background skyscraper without windows, using the
* two different grays. */ * two different grays. We use two passes to make sure that the lighter
si.color = 1; * ones are always in the background. */
for (int offset = -10; offset < canvas->width;) { for (int color = 2; color >= 1; color--) {
offset += rand() % 8; si.color = color;
si.xoff = offset; for (int offset = -10; offset < canvas->width;) {
si.width = 10 + rand()%9; offset += rand() % 8;
si.height = canvas->height/2 + rand()%canvas->height/2; si.xoff = offset;
si.windows = 0; si.width = 10 + rand()%9;
si.color = si.color == 1 ? 2 : 1; if (color == 2)
generateSkyscraper(canvas, &si); si.height = canvas->height/2 + rand()%canvas->height/2;
offset += si.width/2; else
si.height = canvas->height/2 + rand()%canvas->height/3;
si.windows = 0;
generateSkyscraper(canvas, &si);
if (color == 2)
offset += si.width/2;
else
offset += si.width+1;
}
} }
/* Now draw the foreground skyscraper with the windows. */ /* Now draw the foreground skyscraper with the windows. */
@ -137,10 +145,10 @@ void generateSkyline(lwCanvas *canvas) {
si.xoff = offset; si.xoff = offset;
si.width = 5 + rand()%14; si.width = 5 + rand()%14;
if (si.width % 4) si.width += (si.width % 3); if (si.width % 4) si.width += (si.width % 3);
si.height = canvas->height/2 + rand()%canvas->height/2; si.height = canvas->height/3 + rand()%canvas->height/2;
si.windows = 1; si.windows = 1;
generateSkyscraper(canvas, &si); generateSkyscraper(canvas, &si);
offset += si.width+1; offset += si.width+5;
} }
} }