MatrixPerspective() angle required in radians

Consistent with similar functions in raymath

2 files changed, 4 insertions, 3 deletions

diff --git a/src/core.c b/src/core.c
index 5cdd8e6b..fc653195 100644
--- a/src/core.c
+++ b/src/core.c
@@ -980,7 +980,7 @@ Ray GetMouseRay(Vector2 mousePosition, Camera camera)
     TraceLog(LOG_DEBUG, "Device coordinates: (%f, %f, %f)", deviceCoords.x, deviceCoords.y, deviceCoords.z);
 
     // Calculate projection matrix (from perspective instead of frustum)
-    Matrix matProj = MatrixPerspective(camera.fovy, ((double)GetScreenWidth()/(double)GetScreenHeight()), 0.01, 1000.0);
+    Matrix matProj = MatrixPerspective(camera.fovy*DEG2RAD, ((double)GetScreenWidth()/(double)GetScreenHeight()), 0.01, 1000.0);
 
     // Calculate view matrix from camera look at
     Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up);
@@ -1033,7 +1033,7 @@ Ray GetMouseRay(Vector2 mousePosition, Camera camera)
 Vector2 GetWorldToScreen(Vector3 position, Camera camera)
 {
     // Calculate projection matrix (from perspective instead of frustum
-    Matrix matProj = MatrixPerspective(camera.fovy, (double)GetScreenWidth()/(double)GetScreenHeight(), 0.01, 1000.0);
+    Matrix matProj = MatrixPerspective(camera.fovy*DEG2RAD, (double)GetScreenWidth()/(double)GetScreenHeight(), 0.01, 1000.0);
 
     // Calculate view matrix from camera look at (and transpose it)
     Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up);
diff --git a/src/raymath.h b/src/raymath.h
index c4db0f3f..70d1bedd 100644
--- a/src/raymath.h
+++ b/src/raymath.h
@@ -873,9 +873,10 @@ RMDEF Matrix MatrixFrustum(double left, double right, double bottom, double top,
 }
 
 // Returns perspective projection matrix
+// NOTE: Angle should be provided in radians
 RMDEF Matrix MatrixPerspective(double fovy, double aspect, double near, double far)
 {
-    double top = near*tan(fovy*PI/360.0);
+    double top = near*tan(fovy);
     double right = top*aspect;
 
     return MatrixFrustum(-right, right, -top, top, near, far);