Zeyad Ahmed Ibrahim Zelmoghazy

Zelmoghazy / rounded_rect.c

Last active November 9, 2025 11:22

Rounded rectangle drawing algorithm by just drawing arcs and connecting them

	void draw_rounded_rectangle_filled_simple(image_view_t *img, i32 x1, i32 y1, i32 x2, i32 y2, i32 radius, color4_t color)
	{
	if (x1 > x2) { SWAP(x1, x2, i32); }
	if (y1 > y2) { SWAP(y1, y2, i32); }

	i32 w = x2 - x1 + 1;
	i32 h = y2 - y1 + 1;

	// Clamp radius to valid range
	radius = Clamp(0, radius, MIN(w,h) / 2);

Zelmoghazy / prof.c

Created June 23, 2025 18:14

Very simple profiler in C

Zelmoghazy / c_declarations.c

Created February 26, 2025 20:38

How declarations work in C

	int a; // a evaluates to int -> a is an int
	int a; // a (dereferencing) evaluates to int -> a is a pointer to int
	int a(); // a() evaluates to int -> a is a function that returns int
	int a(); // () has higher precedence ≃ int (a()) -> deref a() evaluates to int -> a is a function that returns pointer to int
	int (a)(); // (a)() evaluates to int -> a is a pointer to function that returns int

	int a[10]; // a[i] evaluates to int -> a is an array of 10 integers
	int a[10]; // [] has higher precedence ≃ int (a[10]) -> deref a[i] evaluates to int -> a is an array of 10 pointers to int
	int (a)[10]; // (a)[i] evaluates to int -> a is a pointer to an array of 10 integers

Zelmoghazy / Makefile

Created February 8, 2025 20:54

Minimal Generic Makefile

	CC=g++
	EXT=cpp

	OPT=
	DBG=
	WARNINGS=-Wall -Wextra -Wsign-conversion -Wconversion
	STD=-std=c++17
	DEPFLAGS=-MP -MD
	DEF=

Zelmoghazy / enum_to_str.c

Last active February 8, 2025 13:02

Get the string representation of enums and iterate them in C using macros

	#include <stdio.h>

	#define ENUM_GEN(ENUM) ENUM,
	#define STRING_GEN(STRING) #STRING,

	// Add all your enums here
	#define LIST_RET_T(RET_T) \
	RET_T(RET_SUCCESS) \
	RET_T(RET_FULL) \
	RET_T(RET_EMPTY) \

	int a; // a evaluates to int -> a is an int
	int a; // a (dereferencing) evaluates to int -> a is a pointer to int
	int a(); // a() evaluates to int -> a is a function that returns int
	int a(); // () has higher precedence ≃ int (a()) -> deref a() evaluates to int -> a is a function that returns pointer to int
	int (a)(); // (a)() evaluates to int -> a is a pointer to function that returns int

	int a[10]; // a[i] evaluates to int -> a is an array of 10 integers
	int a[10]; // [] has higher precedence ≃ int (a[10]) -> deref a[i] evaluates to int -> a is an array of 10 pointers to int
	int (a)[10]; // (a)[i] evaluates to int -> a is a pointer to an array of 10 integers