From bd7d4366b6643b5c6cd04f40dd32f5d9c9575fd6 Mon Sep 17 00:00:00 2001
From: Aleksa Vuckovic <aleksav013@gmail.com>
Date: Fri, 5 Aug 2022 14:33:51 +0200
Subject: organised files; switched to recursive make

---
 kernel/graphics.c | 119 ------------------------------------------------------
 1 file changed, 119 deletions(-)
 delete mode 100644 kernel/graphics.c

(limited to 'kernel/graphics.c')

diff --git a/kernel/graphics.c b/kernel/graphics.c
deleted file mode 100644
index d4fc7c7..0000000
--- a/kernel/graphics.c
+++ /dev/null
@@ -1,119 +0,0 @@
-#include <stdint.h>
-#include <multiboot2.h>
-#include <graphics.h>
-#include <font.h>
-
-uint64_t* pixel_offset(fb_t fb, uint32_t x, uint32_t y)
-{
-	return (uint64_t*)((char*)fb.addr + y * fb.pitch + x * fb.bpp / 8);
-}
-
-void fb_draw_pixel(fb_t fb, uint32_t x, uint32_t y, uint32_t col)
-{
-	if (x >= fb.width || y >= fb.height) return;
-
-	uint32_t* fb_offset = (uint32_t*)pixel_offset(fb, x, y);
-	*fb_offset = col;
-}
-
-/* https://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm */
-
-void fb_draw_line_low(fb_t fb, uint32_t x0, uint32_t y0, uint32_t x1, uint32_t y1, uint32_t col)
-{
-	int32_t dx = x1 - x0;
-	int32_t dy = y1 - y0;
-	int32_t yi = 1;
-	if (dy < 0) {
-		yi = -1;
-		dy = -dy;
-	}
-	int32_t D = (2 * dy) - dx;
-	int32_t y = y0;
-
-	for (int32_t x = x0; x <= x1; x++) {
-		fb_draw_pixel(fb, x, y, col);
-		if (D > 0) {
-			y = y + yi;
-			D = D + (2 * (dy - dx));
-		} else {
-			D = D + 2 * dy;
-		}
-	}
-
-}
-
-void fb_draw_line_high(fb_t fb, int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t col)
-{
-	int32_t dx = x1 - x0;
-	int32_t dy = y1 - y0;
-	int32_t xi = 1;
-	if (dx < 0) {
-		xi = -1;
-		dx = -dx;
-	}
-	int32_t D = (2 * dx) - dy;
-	int32_t x = x0;
-
-	for (int32_t y = y0; y <= y1; y++) {
-		fb_draw_pixel(fb, x, y, col);
-		if (D > 0) {
-			x = x + xi;
-			D = D + (2 * (dx - dy));
-		} else {
-			D = D + 2 * dx;
-		}
-	}
-}
-
-int32_t abs(int32_t val)
-{
-	if (val < 0) return -val;
-	return val;
-}
-
-void fb_draw_line(fb_t fb, int32_t x0, int32_t y0, int32_t x1, int32_t y1, int32_t col)
-{
-	if (abs(y1 - y0) < abs(x1 - x0)) {
-		if (x0 > x1)
-			fb_draw_line_low(fb, x1, y1, x0, y0, col);
-		else
-			fb_draw_line_low(fb, x0, y0, x1, y1, col);
-	} else {
-		if (y0 > y1)
-			fb_draw_line_high(fb, x1, y1, x0, y0, col);
-		else
-			fb_draw_line_high(fb, x0, y0, x1, y1, col);
-	}
-}
-
-void fb_draw_character(fb_t fb, char c, uint32_t x, uint32_t y, uint32_t char_col, uint32_t bg_col)
-{
-	if (c < 0) return;
-
-	uint32_t offset = 32 + c * 16;
-	for (uint32_t i = 0 ; i < 16; i++)
-	{
-		for (uint32_t j = 0 ; j < 8; j++)
-		{
-			if (font[offset + i] & (1 << (7 - j))) {
-				fb_draw_pixel(fb, x + j, y + i, char_col);
-			} else {
-				fb_draw_pixel(fb, x + j, y + i, bg_col);
-			}
-		}
-	}
-}
-
-uint32_t strlen(const char* s)
-{
-	char *p = (char*)s;
-	while (*p) p++;
-	return p - s;
-}
-
-void fb_draw_string(fb_t fb, const char* s, uint32_t x, uint32_t y, uint32_t char_col, uint32_t bg_col)
-{
-	for (uint32_t i = 0; i < strlen(s); i++) {
-		fb_draw_character(fb, s[i], x + i * 8, y, char_col, bg_col);
-	}
-}
-- 
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