init

.gitignore

@@ -0,0 +1 @@
+build/*

LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2024 Hamza NANAHA <hamza.nanaha@hotmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Makefile

@@ -0,0 +1,10 @@
+$(shell mkdir -p build)
+
+all:
+	gcc -Wall -Wextra main.c -o build/main -lraylib -lm
+
+release:
+	gcc -Wall -Wextra -O3 -DRELEASE main.c -o build/main -lraylib -lm
+
+run: all
+	./build/main

README.md

@@ -0,0 +1,17 @@
+# Fractouille
+
+![exemple](exemple.png)
+
+Small tree fractal.
+
+# Keybind
+
+- esc : quit
+- d : decrease angle
+- a or q : increase angle
+
+# Building
+
+```console
+$ make
+```

main.c

@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <math.h>
+
+#include "raylib.h"
+
+#define RAD_TO_DEG(rad) (rad) * (180 / PI)
+#define DEG_TO_RAD(deg) (deg) / (180 / PI)
+
+#define COLOR ORANGE
+
+const Vector2 screen = {.x = 1000, .y = 1000};
+
+void branche(Vector2 origin, float base_angle, float angle, float step, int level)
+{
+    if (level <= 0)
+        return;
+
+    Vector2 dest = {
+        .x = origin.x + cos(DEG_TO_RAD(angle)) * step,
+        .y = origin.y - sin(DEG_TO_RAD(angle)) * step,
+    };
+    DrawLineEx(origin, dest, level/6, COLOR);
+
+    branche(dest, base_angle, angle + base_angle/2, step*3/4, level-1);
+    branche(dest, base_angle, angle - base_angle/2, step*3/4, level-1);
+}
+
+void arbre(float angle, float step, float level)
+{
+    Vector2 origin = {screen.x/2, screen.y - 50};
+    Vector2 dest = {origin.x, origin.y - step};
+    DrawLineEx(origin, dest, level/4, COLOR);
+
+    branche(dest, angle, 90.0f + angle/2, step/2, level);
+    branche(dest, angle, 90.0f - angle/2, step/2, level);
+}
+
+int main(void)
+{
+    float angle = 90.0f;
+
+    SetTraceLogLevel(LOG_ERROR);
+    InitWindow(screen.x, screen.y, "arbre");
+    SetTargetFPS(60);
+
+    while (!WindowShouldClose()) {
+        BeginDrawing();
+        {
+            ClearBackground(BLACK);
+
+            if (IsKeyDown(KEY_D))
+                angle -= 0.7f;
+            if (IsKeyDown(KEY_A))
+                angle += 0.7f;
+
+            arbre(angle, screen.x/4, 16);
+
+            printf(" %.02f         \r", angle);
+            fflush(stdout);
+        }
+        EndDrawing();
+    }
+
+    CloseWindow();
+    printf("\n");
+    return 0;
+}