1 files changed, 18 insertions, 4 deletions
diff --git a/src/physics.h b/src/physics.h
index 38a6100..2557d3c 100644
--- a/src/physics.h
+++ b/src/physics.h
@@ -4,11 +4,15 @@
 #include "common.h"
 #include "itc.h"
 
+#define LIGHT_SPEED (299792458.0f)
+#define MU_ZERO (4.0f * M_PI * 10e-7f)
+#define EPS_ZERO (1.0f / (MU_ZERO * LIGHT_SPEED * LIGHT_SPEED))
+#define IMPEDANCE_ZERO (sqrt(MU_ZERO/EPS_ZERO))
+
 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
+	size_t zstr1, ystr1, xstr1, size1; // same as above but for aux
 	float spacing; // in meters
 } phy_field_info;
 
@@ -17,18 +21,28 @@ typedef struct {
 	float *H;
 } phy_field_em;
 
+typedef struct {
+	float eps, mu; // permittivity and permeability
+
+	vec3_t curl_E, curl_H;
+
+	vec3_t int_E, int_H;
+	vec3_t int_curl_E, int_curl_H;
+} phy_field_aux_point;
+
 enum {
 	PHY_CMD_QUIT,
 	PHY_CMD_PAUSE,
 	PHY_CMD_RESUME,
 	PHY_CMD_STEP,
-	PHY_CMD_RESET
+	PHY_CMD_RESET,
+	PHY_CMD_DEBUG
 };
 
 typedef struct {
 	phy_field_info field_info;
 	phy_field_em fields[3];
-	float *field_eps, *field_mu; //permittivity and permeability
+	phy_field_aux_point *aux;
 	float time, time_delta;
 
 	// UI stuff