From 23185bc7862d0f23901d743f3e332601978b16bd Mon Sep 17 00:00:00 2001
From: Sumbera <stanislav@sumbera.com>
Date: Fri, 26 Jun 2020 15:11:37 +0200
Subject: [PATCH] fix num_vertices in  ArFrame_transformCoordinates2d call so
 it doesn't crash sample

there are just 3 'vertices' -   origin, x, y not 6.
---
 samples/hello_ar_c/app/src/main/cpp/hello_ar_application.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/hello_ar_c/app/src/main/cpp/hello_ar_application.cc b/samples/hello_ar_c/app/src/main/cpp/hello_ar_application.cc
index 62281cfd7..d0a81c63c 100644
--- a/samples/hello_ar_c/app/src/main/cpp/hello_ar_application.cc
+++ b/samples/hello_ar_c/app/src/main/cpp/hello_ar_application.cc
@@ -438,7 +438,7 @@ glm::mat3 HelloArApplication::GetTextureTransformMatrix(
   // along the two principal axes.
   const float ndcBasis[6] = {0, 0, 1, 0, 0, 1};
   ArFrame_transformCoordinates2d(
-      session, frame, AR_COORDINATES_2D_OPENGL_NORMALIZED_DEVICE_COORDINATES, 6,
+      session, frame, AR_COORDINATES_2D_OPENGL_NORMALIZED_DEVICE_COORDINATES, 3,
       ndcBasis, AR_COORDINATES_2D_TEXTURE_NORMALIZED, frameTransform);
 
   // Convert the transformed points into an affine transform and transpose it.