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/* $Id: avatar.c 34 2024-08-22 02:50:46Z nishi $ */
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/* $Id: avatar.c 36 2024-08-22 02:54:07Z nishi $ */
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#include "rv_avatar.h"
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#include "rv_avatar.h"
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#include "rv_md5.h"
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#include "rv_md5.h"
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <png.h>
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#include <png.h>
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int hex_to_num(const char* hex, int len) {
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int hex_to_num_len(const char* hex, int len) {
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	int i;
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	int i;
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	int num = 0;
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	int num = 0;
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	for(i = 0; i < len; i++) {
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	for(i = 0; i < len; i++) {
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		num = num << 4;
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		num = num << 4;
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		if(hex[i] >= '0' && hex[i] <= '9') {
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		if(hex[i] >= '0' && hex[i] <= '9') {
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char* generate_ident(const char* username, int* r, int* g, int* b) {
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char* generate_ident(const char* username, int* r, int* g, int* b) {
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	char* ident = malloc(25);
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	char* ident = malloc(25);
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	char* hash = rv_md5(username);
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	char* hash = rv_md5(username);
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	double h = hex_to_num(hash + 32 - 2 - 2 - 3, 3);
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	double h = hex_to_num_len(hash + 32 - 2 - 2 - 3, 3);
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	double s = hex_to_num(hash + 32 - 2 - 2, 2);
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	double s = hex_to_num_len(hash + 32 - 2 - 2, 2);
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	double v = hex_to_num(hash + 32 - 2, 2);
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	double v = hex_to_num_len(hash + 32 - 2, 2);
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	h = h * 360 / 4095;
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	h = h * 360 / 4095;
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	s = 65 - s * 20 / 255;
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	s = 65 - s * 20 / 255;
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	v = 75 - v * 20 / 255;
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	v = 75 - v * 20 / 255;
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