Separate everything out

1 files changed, 50 insertions, 0 deletions

diff --git a/inc/cad/topology.h b/inc/cad/topology.h
new file mode 100644
index 0000000..b3879b2
--- /dev/null
+++ b/inc/cad/topology.h
@@ -0,0 +1,50 @@
+#pragma once
+
+#include <stddef.h>
+
+#define TOPO_MOVETO(c) \
+	{ .cmd = {TOPO_MOVETO} }, \
+	{ .arg = {c} } \
+
+#define TOPO_LINETO(c) \
+	{ .cmd = {TOPO_LINETO} }, \
+	{ .arg = {c} } \
+
+#define TOPO_ARCTO(center, end) \
+	{ .cmd = {TOPO_ARCTO} }, \
+	{ .arg = {center} }, \
+	{ .arg = {end} } \
+
+#define TOPO_END() \
+	{ .cmd = {TOPO_END} } \
+
+enum topology_op {
+	TOPO_MOVETO,
+	TOPO_LINETO,
+	TOPO_ARCTO,
+
+	TOPO_END,
+};
+
+struct topology_cmd {
+	enum topology_op op;
+};
+
+struct topology_arg {
+	struct component *c;
+};
+
+struct topology_elem {
+	union {
+		struct topology_cmd cmd;
+		struct topology_arg arg;
+	};
+};
+
+struct topology {
+	struct topology_elem *elements;
+	size_t length;
+	size_t capacity;
+};
+
+void add_fragment(struct topology *topo, struct topology_elem *new);