Starter code for Wu's line-drawing algorithm

main.c

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"

typedef struct point_struct Point;
typedef uint32_t RGBA;
struct point_struct
{
	int x;
	int y;
};

int main()
{
	char *outputFile = "output.png";
	int width = 512;
	int height = 512;
	int channels = 4; 

	//Create image with white background
	uint8_t *pixels = malloc(width * height * channels);
	for(int i = 0; i < width * height * channels; i += channels)
	{
		pixels[i + 0] = 255; // R
		pixels[i + 1] = 255; // G
		pixels[i + 2] = 255; // B
		if(channels == 4)
		{
			pixels[i + 3] = 255; // A
		}
	}
	//Write image to file
	stbi_write_png(outputFile, width, height, channels, pixels, width * channels);
}