star-meshtool

commit d0f5c9de800774d83742b984e064e5802525c387
parent 31654a41ee1f27e993ba6a4b4ed063fbb2d2f1a7
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Wed, 19 Nov 2025 09:23:56 +0100

Fix the parsing of a translation transformation

The matrix representing the transformations to be applied was
incorrectly updated with regard to the translation parameters.

Diffstat:
M
src/mtool_args.c
 | 
5
+++--

1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/mtool_args.c b/src/mtool_args.c
@@ -75,6 +75,7 @@ static res_T
 apply_translation(struct mtool_args* args, const char* str)
 {
   double translation[3] = {0,0,0};
+  double tmp[3] = {0,0,0};
   double vec[3] = {0,0,0};
   size_t len = 0;
   res_T res = RES_OK;
@@ -90,8 +91,8 @@ apply_translation(struct mtool_args* args, const char* str)
    *      | C F I L |   | 0 0 1 Tz |   | C  F  I  (C*Tx + F*Ty + I*Tz + L) |
    *      | 0 0 0 1 |   | 0 0 0  1 |   | 0  0  0                         1 | */
                    d3_muld(vec, args->transform+0, translation[0]);
-  d3_add(vec, vec, d3_muld(vec, args->transform+3, translation[1]));
-  d3_add(vec, vec, d3_muld(vec, args->transform+6, translation[2]));
+  d3_add(vec, vec, d3_muld(tmp, args->transform+3, translation[1]));
+  d3_add(vec, vec, d3_muld(tmp, args->transform+6, translation[2]));
   d3_add(vec, vec, args->transform+9);
   d3_set(args->transform+9, vec);