Remove some hardcoded values

src/main.c

@@ -21,6 +21,7 @@
 #define Y_CHARGE_2 0.5
 
 #define NB_OF_LINES 100
+#define NB_OF_CHARGES 3
 
 #define MIN(a,b) (((a)<(b))?(a):(b))
 #define MAX(a,b) (((a)>(b))?(a):(b))
@@ -58,14 +59,17 @@ int main()
 	}
 
 	// ! INIT CHARGES
-	charge_t *charges = malloc(2 * sizeof(*charges));
+	charge_t *charges = malloc(NB_OF_CHARGES * sizeof(*charges));
 	charges[0].pos = (vec2){X_CHARGE_1, Y_CHARGE_1};
 	charges[0].q = 1.6E-19;
 	charges[1].pos = (vec2){X_CHARGE_2, Y_CHARGE_2};
 	charges[1].q = 1.6E-19;
+	charges[2].pos = (vec2){X_CHARGE_2, Y_CHARGE_2};
+	charges[2].q = 1.6E-19;
 
 
 	// ! INIT LISTE DE POINTS
+	// Fait de cette manière pour le live update
 	vec2 *lines = malloc(NB_OF_LINES * sizeof(*lines));
 	for (int i = 0; i < NB_OF_LINES; i++)
 	{
@@ -106,11 +110,10 @@ int main()
 			{
 				SDL_GetMouseState(&mouse_x, &mouse_y);
 
-
 				if (event.button.button == SDL_BUTTON_RIGHT)
 				{
 					choosen_part = -1;
-					for (int i = 0; i < 2; i++)
+					for (int i = 0; i < NB_OF_CHARGES; i++)
 					{
 						coordinates_t c = vec2_to_coordinates(charges[i].pos, WIDTH, HEIGHT);
 
@@ -126,7 +129,7 @@ int main()
 				{
 					choosen_part = -1;
 					// ! HARDCODED VALUE
-					for (int i = 0; i < 2; i++)
+					for (int i = 0; i < NB_OF_CHARGES; i++)
 					{
 						coordinates_t c = vec2_to_coordinates(charges[i].pos, WIDTH, HEIGHT);
 
@@ -157,13 +160,13 @@ int main()
 			case LIGNES:
 				GFX_ClearScreen(renderer, COLOR_BLACK);
 				draw_lines(renderer, charges, lines, NB_OF_LINES);
-				draw_charges(renderer, charges, 2, 10);
+				draw_charges(renderer, charges, NB_OF_CHARGES, 10);
 				SDL_RenderPresent(renderer);
 				state = IDLE;
 				break;
 			case HEATMAP:
 				draw_heatmap(renderer, charges);
-				draw_charges(renderer, charges, 2, 10);
+				draw_charges(renderer, charges, NB_OF_CHARGES, 10);
 				SDL_RenderPresent(renderer);
 				state = IDLE;
 				break;
@@ -173,7 +176,7 @@ int main()
 				charges[choosen_part].pos.y = (double)mouse_y / HEIGHT;
 				GFX_ClearScreen(renderer, COLOR_BLACK);
 				draw_lines(renderer, charges, lines, NB_OF_LINES);
-				draw_charges(renderer, charges, 2, 10);
+				draw_charges(renderer, charges, NB_OF_CHARGES, 10);
 				SDL_RenderPresent(renderer);
 				break;
 		}
@@ -221,7 +224,7 @@ void draw_heatmap(SDL_Renderer* renderer, charge_t* charges)
 		{
 			vec2 e = {.x = 0, .y = 0};
 			vec2 p = {.x = (double)(x) / (double)(WIDTH), .y = (double)(y) / (double)(HEIGHT)};
-			if (compute_total_normalized_e(charges, 2, p, 0.05, &e))
+			if (compute_total_normalized_e(charges, NB_OF_CHARGES, p, 0.05, &e))
 			{
 				e = vec2_mul(1E9, e);
 				double tmp = vec2_norm(e);
@@ -268,7 +271,7 @@ void draw_lines(SDL_Renderer* renderer, charge_t* charges, vec2* lines, int nb_o
 		while (rendering)
 		{
 			vec2 e = {.x = 0, .y = 0};
-			if (compute_total_normalized_e(charges, 2, p, 0.025, &e) == false)
+			if (compute_total_normalized_e(charges, NB_OF_CHARGES, p, 0.025, &e) == false)
 			{
 				side++;
 				p = og_p;