adding gfx and ui stuff

gfx/world/camera.c

@@ -0,0 +1,26 @@
+#include "camera.h"
+#include "../../vendor/raymath.h"
+
+Camera createCamera(int32 width, int32 height) {
+    return (Camera){
+        .view = (Matrix){0},
+        .proj = MatrixPerspective(DEG2RAD * 45.0f, (real32)width/(real32)height, 0.1f, 100.0f),
+        .pos = (Vec3){0},
+        .up = (Vec3){0,1,0},
+    };
+}
+
+void cameraSetAspect(Camera *c, int32 width, int32 height) {
+    real32 aspectRatio = (real32)width/(real32)height;
+    c->proj = MatrixPerspective(DEG2RAD * 45.0f, aspectRatio, 0.1f, 100.0f);
+}
+
+void cameraLookAt(Camera *c, float x, float y, float z) {
+    c->target = (Vec3){x, y, z};
+    c->view = MatrixLookAt(c->pos, c->target, c->up);
+}
+
+void cameraSetUp(Camera *c, real32 up_x, real32 up_y, real32 up_z) {
+    c->up = (Vec3){up_x, up_y, up_z};
+}
+