drawing.h

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/*
purpose: This file contains functions related to drawing shapes and images on the screen.
 
Performance Notes:
- Draw_FilledCircle: Optimized to use integer arithmetic and minimize sqrt calls
- Draw_Hexagon/Draw_FilledHexagon: Use pre-calculated trigonometric values for better performance
*/
#pragma once
 
#include "vector.h"
#include <SDL_render.h>
#include <SDL_pixels.h>
 
static inline SDL_Color ToColor(const SDL_FColor&);
static inline SDL_FColor ToFColor(const SDL_Color&);
 
// Draws circle outline using Midpoint Circle Algorithm
void Draw_Circle(int cx, int cy, int radius);
 
// Draws filled circle using horizontal scanlines (optimized)
void Draw_FilledCircle(int cx, int cy, int radius);
 
void Draw_Triangle(Vector p1, Vector p2, Vector p3);
void Draw_FilledTriangle(
    const Vector& p1,
    const Vector& p2,
    const Vector& p3,
    SDL_FColor color);
 
// Draws hexagon outline (optimized with pre-calculated trig values)
void Draw_Hexagon(
    Vector center,
    float radius,
    SDL_Color color);
 
// Draws filled hexagon (optimized with pre-calculated trig values)
void Draw_FilledHexagon(
    Vector center,
    float radius,
    SDL_FColor color);
 
// Draws rectangle outline with float coordinates
void Draw_Rectangle(const SDL_FRect* rect, SDL_Color color);
 
void Draw_Text(const std::string& text, const SDL_FRect* rect, SDL_Color textcolor, SDL_Color backgroundcolor);