Split common.h.

1 files changed, 46 insertions, 0 deletions

diff --git a/src/physics.h b/src/physics.h
new file mode 100644
index 0000000..533d8a4
--- /dev/null
+++ b/src/physics.h
@@ -0,0 +1,46 @@
+#ifndef _PHYSICS_H
+#define _PHYSICS_H
+
+#include "common.h"
+#include "itc.h"
+
+typedef struct {
+	size_t width, height, depth;
+	size_t zstr, ystr, xstr, size; // strides in no. of points (not bytes)
+	size_t zstr1, ystr1, xstr1, size1; // same as above but for associated
+	                                   // scalar fields
+	float spacing; // in meters
+} phy_field_info;
+
+typedef struct {
+	float *E;
+	float *H;
+} phy_field_em;
+
+enum {
+	PHY_CMD_QUIT,
+	PHY_CMD_PAUSE,
+	PHY_CMD_RESUME,
+	PHY_CMD_STEP
+};
+
+typedef struct {
+	phy_field_info field_info;
+	phy_field_em fields[3];
+	float *field_eps, *field_mu; //permittivity and permeability
+	float time;
+
+	// UI stuff
+	bool running;
+	itc_chan ctl;
+	SDL_mutex *rotate_lock;
+} phy_sim;
+
+void phy_sim_destroy(phy_sim *sim);
+int phy_sim_create(phy_sim *sim);
+void phy_sim_compute_const_fields(phy_sim *sim);
+void phy_sim_step(phy_sim *sim, float dt);
+
+int phy_thread(phy_sim *sim);
+
+#endif // _PHYSICS_H