1 files changed, 18 insertions, 0 deletions
diff --git a/test/raytracer/matrix.h b/test/raytracer/matrix.h
new file mode 100644
index 0000000..4b9f434
--- /dev/null
+++ b/test/raytracer/matrix.h
@@ -0,0 +1,18 @@
+struct matrix {
+  flt xx, xy, xz, xt;
+  flt yx, yy, yz, yt;
+  flt zx, zy, zz, zt;
+};
+
+void apply_to_point(struct matrix * m, struct point * p,
+                    /*out*/ struct point * r);
+void apply_to_vect(struct matrix * m, struct vector * v,
+                   /*out*/ struct vector * r);
+extern struct matrix matrix_identity;
+#define mid (&matrix_identity)
+struct matrix * mtranslate(flt sx, flt sy, flt sz);
+struct matrix * mscale(flt sx, flt sy, flt sz);
+struct matrix * mrotatex(flt a);
+struct matrix * mrotatey(flt a);
+struct matrix * mrotatez(flt a);
+struct matrix * mcompose(struct matrix * m, struct matrix * n);