erzeugung vom ersten test image. farbuebergang rot und gruen.

.idea/vcs.xml

@@ -2,5 +2,6 @@
 <project version="4">
   <component name="VcsDirectoryMappings">
     <mapping directory="$PROJECT_DIR$" vcs="Git" />
+    <mapping directory="$PROJECT_DIR$/stb" vcs="Git" />
   </component>
 </project>

CMakeLists.txt

@@ -3,4 +3,6 @@ project(Raytracer C)
 
 set(CMAKE_C_STANDARD 23)
 
-add_executable(Raytracer main.c)
+add_executable(Raytracer main.c
+        examples.c
+        examples.h)

examples.c

@@ -0,0 +1,19 @@
+//
+// Created by ary on 19.07.2026.
+//
+
+#include "examples.h"
+
+void example_color(int width, int height, int channels, unsigned char *image) {
+    for (int i = 0; i < height * width; i++) {
+        int step = i *channels;
+        int x = i % width;
+        int y = i / width;
+        image[step] = 0 + (int)((((double)x)/width) * 255);
+        image[step+1] = 0 + (int)((((double)y)/width) * 255);
+        image[step+2] = 0;
+        if (channels == 4) {
+            image[step+3] = 255;
+        }
+    }
+}

examples.h

@@ -0,0 +1,9 @@
+//
+// Created by ary on 19.07.2026.
+//
+
+#ifndef RAYTRACER_EXAMPLES_H
+#define RAYTRACER_EXAMPLES_H
+
+#endif //RAYTRACER_EXAMPLES_H
+void example_color(int, int, int, unsigned char *);

main.c

@@ -1,6 +1,20 @@
 #include <stdio.h>
+#include <stdlib.h>
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image/stb_image.h"
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image/stb_image_write.h"
+#include "examples.h"
+
+int main() {
+    int width = 1280;
+    int height = 780;
+    int channels = 4;
+    unsigned char *image = (unsigned char*)malloc(width * height * channels );
+    example_color(width, height, channels, image);
+    stbi_write_png("C:/Users/ary/CLionProjects/Raytracer/test.png", width, height, channels, image, width * channels);
+    free(image);
 
-int main(void) {
-    printf("Hello, Worldd!\n");
     return 0;
 }