changing styles plus simplifying a bit

1 files changed, 22 insertions, 0 deletions

diff --git a/src/core/camera.c b/src/core/camera.c
new file mode 100644
index 0000000..50c4054
--- /dev/null
+++ b/src/core/camera.c
@@ -0,0 +1,22 @@
+#include "camera.h"
+
+#include "maths.h"
+
+Camera Camera_Create(vec3 pos, vec3 front, vec3 up, f32 fov) {
+  Camera c = { .position = pos, .front = front, .up = up, .fov = fov };
+  return c;
+}
+
+mat4 Camera_ViewProj(Camera *c, f32 lens_height, f32 lens_width, mat4 *out_view,
+                            mat4 *out_proj) {
+  mat4 proj = mat4_perspective(c->fov, lens_width / lens_height, 0.1, 100.0);
+  vec3 camera_direction = vec3_add(c->position, c->front);
+  mat4 view = mat4_look_at(c->position, camera_direction, c->up);
+  if (out_view) {
+    *out_view = view;
+  }
+  if (out_proj) {
+    *out_proj = proj;
+  }
+  return mat4_mult(view, proj);
+}