diff options
Diffstat (limited to 'src/circle.sql')
| -rw-r--r-- | src/circle.sql | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/src/circle.sql b/src/circle.sql deleted file mode 100644 index c4ac18a..0000000 --- a/src/circle.sql +++ /dev/null @@ -1,17 +0,0 @@ -INSERT OR REPLACE INTO images (id, width, height) VALUES ('circle', 400, 400) RETURNING id; - -WITH RECURSIVE - image AS (SELECT * FROM images WHERE id = 'circle'), - circle AS (SELECT width/2 AS cx, height/2 AS cy, 160 AS radius FROM image), - horizontal(x) AS - (SELECT width FROM image UNION ALL SELECT x - 1 FROM horizontal WHERE x > 1), - vertical(y) AS - (SELECT height FROM image UNION ALL SELECT y - 1 FROM vertical WHERE y > 1), - _pixels(x, y, r, g, b) AS (SELECT - x, y, - 150, - 255 * MAX(0, MIN(1, (SELECT (x - cx)*(x - cx) + (y - cy)*(y - cy) - radius*radius FROM circle))), - 150 - FROM vertical, horizontal - ) -INSERT INTO pixels (image_id, x, y, r, g, b) SELECT 'circle', x, y, r, g, b FROM _pixels; |
