First Commit

5 files changed, 203 insertions, 0 deletions

diff --git a/src/lensdrac/lensdrac.c b/src/lensdrac/lensdrac.c
new file mode 100644
index 0000000..abcacb3
--- /dev/null
+++ b/src/lensdrac/lensdrac.c
@@ -0,0 +1,57 @@
+/**

+ * lensdraw.c - source file for trying things with SDL2.

+ *

+ * Copyright (C) 2025 https://optics-design.com

+ *

+ * This program is free software: you can redistribute it and/or modify

+ * it under the terms of the GNU Affero General Public License as

+ * published by the Free Software Foundation, either version 3 of the

+ * License, or (at your option) any later version.

+ *

+ * See the COPYING file for the full license text.

+ */

+#include <SDL.h>

+#include <math.h>

+

+#define SCREEN_WIDTH 800

+#define SCREEN_HEIGHT 600

+

+void draw_circle(SDL_Renderer *renderer, int cx, int cy, int r) {

+    for (int x = -r; x <= r; x++) {

+        int y = sqrt(r * r - x * x);  

+        SDL_RenderDrawPoint(renderer, cx + x, cy + y);

+        SDL_RenderDrawPoint(renderer, cx + x, cy - y);

+    }

+}

+

+void draw_lens(SDL_Renderer *renderer, int cx, int cy, int r) {

+    SDL_SetRenderDrawColor(renderer, 0, 200, 255, 255);  // Light blue color for lens

+

+    for (int x = 0; x <= r; x++) {

+        int y1 = sqrt(r * r - x * x);  

+        int y2 = -y1;  

+

+        for (int y = y2; y <= y1; y++) {  

+            SDL_RenderDrawPoint(renderer, cx + x, cy + y);

+        }

+    }

+}

+int main(int argc, char* argv[]) {

+    SDL_Init(SDL_INIT_VIDEO);

+    SDL_Window *window = SDL_CreateWindow("Spherical Lens", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN);

+    SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);

+

+    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);  // Black background

+    SDL_RenderClear(renderer);

+

+    draw_lens(renderer, SCREEN_WIDTH / 2, SCREEN_HEIGHT / 2, 100);  // Draw lens

+

+    SDL_RenderPresent(renderer);

+

+    SDL_Delay(5000);  // Show for 5 seconds

+

+    SDL_DestroyRenderer(renderer);

+    SDL_DestroyWindow(window);

+    SDL_Quit();

+    return 0;

+}

diff --git a/src/lensdrac/sdl2test.c b/src/lensdrac/sdl2test.c
new file mode 100644
index 0000000..511c0bd
--- /dev/null
+++ b/src/lensdrac/sdl2test.c
@@ -0,0 +1,22 @@
+/**

+ * sdl2test.c - source file for trying things with SDL2.

+ *

+ * Copyright (C) 2025 https://optics-design.com

+ *

+ * This program is free software: you can redistribute it and/or modify

+ * it under the terms of the GNU Affero General Public License as

+ * published by the Free Software Foundation, either version 3 of the

+ * License, or (at your option) any later version.

+ *

+ * See the COPYING file for the full license text.

+ */

+#include <SDL.h>

+

+int main(int argc, char *argv[]) {

+    SDL_Init(SDL_INIT_VIDEO);

+    SDL_Window *win = SDL_CreateWindow("Hello SDL2", 100, 100, 800, 600, SDL_WINDOW_SHOWN);

+    SDL_Delay(2000);

+    SDL_DestroyWindow(win);

+    SDL_Quit();

+    return 0;

+}

diff --git a/src/odutils/contrast.c b/src/odutils/contrast.c
new file mode 100644
index 0000000..115bcb0
--- /dev/null
+++ b/src/odutils/contrast.c
@@ -0,0 +1,43 @@
+/**

+ * contrast.c - source file for just testing basic contrast stuff.

+ *

+ * Copyright (C) 2025 https://optics-design.com

+ *

+ * This program is free software: you can redistribute it and/or modify

+ * it under the terms of the GNU Affero General Public License as

+ * published by the Free Software Foundation, either version 3 of the

+ * License, or (at your option) any later version.

+ *

+ * See the COPYING file for the full license text.

+ */

+#include <stdio.h>

+#include <stdlib.h>

+

+int main(int argc, char* argv[]){

+    int number=1;

+    char ch;

+while (--argc>0) {

+        if ((*++argv)[0] =='-') {

+        

+        

+while ((ch = *++argv[0])) {

+            switch (ch) {

+                case 'm':

+                number=1;

+                break;

+                case 'w':

+                number = 2;

+                break;

+                default:

+                printf("lmao\n");

+                break;

+

+            

+            }

+

+}

+        }

+}

+    printf("this is %d",number);

+    return 0;

+}

diff --git a/src/odutils/oif.c b/src/odutils/oif.c
new file mode 100644
index 0000000..b5ef22f
--- /dev/null
+++ b/src/odutils/oif.c
@@ -0,0 +1,42 @@
+/**

+ * oif.c - source file for just testing basic optics-related functions.

+ *

+ * Copyright (C) 2025 https://optics-design.com

+ *

+ * This program is free software: you can redistribute it and/or modify

+ * it under the terms of the GNU Affero General Public License as

+ * published by the Free Software Foundation, either version 3 of the

+ * License, or (at your option) any later version.

+ *

+ * See the COPYING file for the full license text.

+ */

+#include <stdio.h>

+#include <stdlib.h>

+

+int main(int argc, char *argv[]) {

+    if (argc != 4){

+        printf("This program calculates relations between object, image and focal length.\nIt requires you to provide two of these and leave the third one as any char in the form of O I F.\nExample: 90 x 50 will output 112.5");

+        return 1;

+    }

+    char *po, *pi, *pf;

+    float o,i,f;

+

+    o =  strtof(argv[1], &po);

+    i =  strtof(argv[2], &pi);

+    f =  strtof(argv[3], &pf);

+    if (*po && !*pi && !*pf) {

+        o = i*f/(i-f); 

+    }

+    else if (!*po && *pi && !*pf) {

+        i = o*f/(o-f); 

+    }

+    else if (!*po && !*pi && *pf) {

+        f = o*i/(o+i); 

+    }

+    else {

+        printf("Wrong usage of the program! Refer to help");

+        return 1;

+    }

+    printf("Object Distance: %.5f\nImage Distance: %.5f\nFocal Length: %.5f\n",o,i,f);

+    return 0;

+}

diff --git a/src/odutils/refl.c b/src/odutils/refl.c
new file mode 100644
index 0000000..dc5c205
--- /dev/null
+++ b/src/odutils/refl.c
@@ -0,0 +1,39 @@
+/**

+ * refl.c - source file for just testing basic optics-related functions.

+ *

+ * Copyright (C) 2025 https://optics-design.com

+ *

+ * This program is free software: you can redistribute it and/or modify

+ * it under the terms of the GNU Affero General Public License as

+ * published by the Free Software Foundation, either version 3 of the

+ * License, or (at your option) any later version.

+ *

+ * See the COPYING file for the full license text.

+ */

+#include <stdio.h>

+#include <stdlib.h>

+#include <math.h>

+

+int main(int argc, char *argv[]) {

+    if (argc != 4){

+        printf("This program calculates the reflection losses and transmission through nsurfs number of surfaces.\n The program is called either with parameters n1 n2 nsurfs and uses the formula Losses = (((n2-n1)/(n2+n1))**2)**nsurfs.");

+        return 1;

+    }

+    char *pn1, *pn2;

+    float n1,n2;

+    int nsurfs;

+    float singsurfrefl;

+

+    n1 =  strtof(argv[1], &pn1);

+    n2 =  strtof(argv[2], &pn2);

+    nsurfs = atoi(argv[3]);

+    // nsurfs =  strtof(argv[3], &pnsurfs);

+    if ( *pn1||*pn2||!nsurfs) {

+        printf("Error! You did not provide n1 n2 nsurfs as numbers."); 

+        return 1;

+    }

+    singsurfrefl = pow((n2-n1)/(n2+n1),2);

+

+    printf("Single Surface Loss: %.2f%\nSingle Surface Transmission:%.2f%\n%d-Surface Loss:%.2f%\n%d-Surface Transmission:%.2f%\n",100*singsurfrefl,100*(1-singsurfrefl),nsurfs,100*(1-pow(1-singsurfrefl,nsurfs)),nsurfs,100*pow(1-singsurfrefl,nsurfs));

+    return 0;

+}