Transform obj to ILT was a static mat4

1 files changed, 7 insertions, 2 deletions

diff --git a/gfx/models/obj.impl.cpp b/gfx/models/obj.impl.cpp
index 0701d13..02996da 100644
--- a/gfx/models/obj.impl.cpp
+++ b/gfx/models/obj.impl.cpp
@@ -17,8 +17,13 @@ ObjParser::ObjParser(std::unique_ptr<std::istream> in) : yyFlexLexer(in.get())
 	ObjParser::yylex();
 	assert(in->good());
 	std::for_each(vertices.begin(), vertices.end(), [](auto & v) {
-		std::swap(v.y, v.z);
-		v.x = -v.x;
+		constexpr const glm::mat4 obj2ilt {
+				-1, 0, 0, 0, // x
+				0, 0, 1, 0, // y
+				0, 1, 0, 0, // z
+				0, 0, 0, 0, // w
+		};
+		v = v * obj2ilt;
 	});
 }