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-rw-r--r--dimension/realize.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/dimension/realize.c b/dimension/realize.c
index aa019ed..6771782 100644
--- a/dimension/realize.c
+++ b/dimension/realize.c
@@ -684,6 +684,9 @@ dmnsn_realize_object_modifiers(dmnsn_astnode astnode, dmnsn_object *object)
dmnsn_assert(astnode.type == DMNSN_AST_OBJECT_MODIFIERS,
"Expected object modifiers.");
+ /* Save the pre-existing transformations */
+ dmnsn_matrix existing_trans = dmnsn_matrix_inverse(object->trans);
+
unsigned int i;
for (i = 0; i < dmnsn_array_size(astnode.children); ++i) {
dmnsn_astnode modifier;
@@ -725,6 +728,16 @@ dmnsn_realize_object_modifiers(dmnsn_astnode astnode, dmnsn_object *object)
dmnsn_assert(false, "Invalid object modifier.");
}
}
+
+ if (object->texture) {
+ /* Right-multiply to counteract any pre-existing transformations -- this
+ means, for example, that the transformation that makes a sphere have
+ radius 2 doesn't scale the texture by a factor of 2 */
+ object->texture->trans = dmnsn_matrix_mul(
+ object->texture->trans,
+ existing_trans
+ );
+ }
}
static void