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commit 9a2a1febc3aacb67aa5823e82fcd20ae1f940e16
Author: Carsten Haitzler <ras...@rasterman.com>
AuthorDate: Tue Jan 9 12:18:44 2024 +0000
evas filter - curve func was off-by-1 ... fix!
@fix
---
src/lib/evas/filters/evas_filter_utils.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/src/lib/evas/filters/evas_filter_utils.c b/src/lib/evas/filters/evas_filter_utils.c
index 48d813a05e..d048759c74 100644
--- a/src/lib/evas/filters/evas_filter_utils.c
+++ b/src/lib/evas/filters/evas_filter_utils.c
@@ -92,9 +92,18 @@ _interpolate_linear(DATA8 *output, int *points)
{
if (points[j] != -1)
{
+ int val1, val2, vald, pos, len;
+
output[j] = (DATA8) points[j];
+ val1 = points[last_idx];
+ val2 = points[j];
+ vald = val2 - val1;
+ len = j - last_idx;
for (k = last_idx + 1; k < j; k++)
- output[k] = (DATA8) (points[j] + ((k - last_idx) * (points[j] - points[last_idx]) / (j - last_idx)));
+ {
+ pos = k - last_idx;
+ output[k] = (DATA8) (val1 + ((pos * vald) / len));
+ }
last_idx = j;
}
}
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