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Diffstat (limited to '')
| -rw-r--r-- | src/gradient.sql | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/src/gradient.sql b/src/gradient.sql index f04cdad..4ad1820 100644 --- a/src/gradient.sql +++ b/src/gradient.sql @@ -1,5 +1,4 @@ -DELETE FROM images WHERE id = 'gradient'; -INSERT INTO images (id, width, height) VALUES ('gradient', 200, 200) RETURNING id; +INSERT OR REPLACE INTO images (id, width, height) VALUES ('gradient', 400, 400) RETURNING id; WITH RECURSIVE image AS (SELECT * FROM images WHERE id = 'gradient'), @@ -8,5 +7,5 @@ WITH RECURSIVE 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, mod(x, 255), mod(y, 255), 100 FROM vertical, horizontal) + (SELECT x, y, x*255/width, y*255/height, 100 FROM vertical, horizontal, image) INSERT INTO pixels (image_id, x, y, r, g, b) SELECT 'gradient', x, y, r, g, b FROM _pixels; |