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153 | diff --git a/README.md b/README.md
new file mode 100644
index 0000000..bb84ec7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,2 @@
+# randoms in C
+
diff --git a/coordinate-in-c/Makefile b/coordinate-in-c/Makefile
new file mode 100644
index 0000000..9d4c59e
--- /dev/null
+++ b/coordinate-in-c/Makefile
@@ -0,0 +1,7 @@
+PKG = $(shell pkg-config --cflags --libs )
+
+install:
+ cc -Wall -Wextra $(PKG) -lm -o main main.c
+
+run:
+ ./main
diff --git a/coordinate-in-c/main.c b/coordinate-in-c/main.c
new file mode 100644
index 0000000..b5cb337
--- /dev/null
+++ b/coordinate-in-c/main.c
@@ -0,0 +1,126 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+
+#define WIDTH 800
+#define HEIGHT 800
+#define PADDING 40
+#define STEPS 20
+#define PREFIX "output.ppm" // you should use .ppm extension
+
+#define RED 0xFB4934
+#define GREEN 0x00FF00
+#define BLUE 0x0000FF
+
+#define BG_COLOR 0x202020
+#define FG_COLOR 0x928374
+
+#define COLOR 0x2C074F
+
+
+
+uint32_t image[HEIGHT][WIDTH];
+
+typedef uint32_t Color ;
+
+
+void cxy(int *x,int *y)
+{
+ *x = WIDTH /2;
+ *y = HEIGHT /2;
+}
+
+
+void draw_px(int x,int y,Color color)
+{
+ if (x < 0 || x >= WIDTH || y < 0 || y >= HEIGHT) return;
+ image[y][x] = color;
+}
+
+void draw_pixels(Color bg)
+{
+ for(int y = 0;y < HEIGHT;++y){
+ for(int x=0;x < WIDTH;++x){
+ draw_px(x, y, bg);
+ }
+ }
+
+}
+
+void draw_circle(int ix, int iy, int radius, Color color)
+{
+ for(int y = -radius;y<=radius;++y){
+ for(int x = -radius;x<=radius;++x){
+ int a = x*x + y*y ;
+ if (a>=radius*radius - radius && a<=radius*radius +radius){
+ draw_px(ix+x,iy+y,color);
+ }
+ }
+
+ }
+
+}
+
+void draw_circlef(int ix, int iy, int radius, Color color)
+{
+ for (int i =0;i<=radius;i=i+3)
+ draw_circle(ix,iy,i,color+i*color);
+
+}
+
+void draw_point(int x,int y)
+{
+ int cx,cy;
+ cxy(&cx,&cy);
+
+ draw_circlef(cx + x*STEPS,(cy -y*STEPS),1,FG_COLOR);
+
+}
+
+
+
+void draw_all()
+{
+ FILE *f= fopen(PREFIX, "wb");
+
+ if (f == NULL){
+ fprintf(stderr,"ERROR: Could not open file!!\n");
+ }
+ fprintf(f,"P6\n%d\n%d\n255\n",WIDTH,HEIGHT);
+
+
+ for(int y = 0;y < HEIGHT;++y){
+ for(int x=0;x < WIDTH;++x){
+
+ Color color = image[y][x];
+ uint8_t bytes[3] = {
+ (color & 0xFF0000) >> 8*2,
+ (color & 0x00FF00) >> 8*1,
+ (color & 0x0000FF) >> 8*0,
+ };
+
+ fwrite(bytes,sizeof(bytes), 1,f);
+ }
+ };
+ fclose(f);
+}
+
+
+
+int main(void) {
+ draw_pixels(BG_COLOR);
+
+ int x,y;
+ cxy(&x,&y);
+
+ // potato
+
+ for (int i =0;i<=5;++i){
+ draw_circlef(rand() % (WIDTH +i),rand() % (HEIGHT +i),x/1.5,RED * rand());
+ }
+
+ draw_all();
+ return 0;
+}
|
