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-rw-r--r--libdimension/cylinder.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/libdimension/cylinder.c b/libdimension/cylinder.c
index 62c1476..1c08b7c 100644
--- a/libdimension/cylinder.c
+++ b/libdimension/cylinder.c
@@ -150,6 +150,9 @@ static bool
dmnsn_cylinder_inside_fn(const dmnsn_object *cylinder, dmnsn_vector point)
{
point = dmnsn_transform_vector(cylinder->trans_inv, point);
- return point.x*point.x + point.z*point.z < 1
- && point.y > -1.0 && point.y < 1.0;
+ dmnsn_cylinder_payload *payload = cylinder->ptr;
+ double r1 = payload->r1, r2 = payload->r2;
+ double r = (point.y*(r2 - r1) + r1 + r2)/2.0;
+ return point.x*point.x + point.z*point.z < r*r
+ && point.y > -1.0 && point.y < 1.0;
}