1 files changed, 15 insertions, 0 deletions
diff --git a/src/camera.c b/src/camera.c
new file mode 100644
index 0000000..79f9c19
--- /dev/null
+++ b/src/camera.c
@@ -0,0 +1,15 @@
+#include <celeritas.h>
+
+mat4 camera_view_proj(camera camera, f32 lens_height, f32 lens_width, mat4* out_view, mat4* out_proj) {
+  mat4 projection_matrix = mat4_perspective(camera.fov, lens_width / lens_height, 0.1, 1000.0);
+  // TODO: store near/far on camera rather than hard-coding here.
+
+  vec3 camera_direction = vec3_add(camera.position, camera.forwards);
+  mat4 view_matrix = mat4_look_at(camera.position, camera_direction, camera.up);
+  if (out_view)
+    *out_view = view_matrix;
+  if (out_proj)
+    *out_proj = projection_matrix;
+
+  return mat4_mult(view_matrix, projection_matrix);
+}
+\ No newline at end of file