From 7aae86fb6eaa356257ab4a736eb552a91cea7db2 Mon Sep 17 00:00:00 2001
From: coco24 <1281299809@qq.com>
Date: Tue, 25 Jul 2023 21:27:20 +0800
Subject: [PATCH] Fix `DrawBillboardPro` to allow `source` of negative size
 (#3197)

---
 src/rmodels.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/rmodels.c b/src/rmodels.c
index 49f922695..9cfbcc7bd 100644
--- a/src/rmodels.c
+++ b/src/rmodels.c
@@ -3492,7 +3492,7 @@ void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle source, Vector
 void DrawBillboardPro(Camera camera, Texture2D texture, Rectangle source, Vector3 position, Vector3 up, Vector2 size, Vector2 origin, float rotation, Color tint)
 {
     // NOTE: Billboard size will maintain source rectangle aspect ratio, size will represent billboard width
-    Vector2 sizeRatio = { size.x*(float)source.width/source.height, size.y };
+    Vector2 sizeRatio = { fabsf(size.x*(float)source.width/source.height), fabsf(size.y) };
 
     Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up);