More drawing progress.

include/sharpsoft/basic_types.hpp

@@ -1,9 +1,58 @@
 #pragma once
 
 #include <cstdint>
+#include <numbers>
+
+using std::numbers::pi;
 
 namespace sharp
 {
+    enum angle_type
+    {
+        DEGREES  = 10,
+        RADIANS  = 11,
+        GRADIANS = 12,
+        TURNS    = 13
+    };
+    struct angle
+    {
+    private:
+        double value;
+
+    public:
+        angle();
+        angle(const angle& copy);
+        angle(double amount, angle_type unit);
+
+        double get(angle_type unit) const;
+
+        double degrees() const;
+        double radians() const;
+        double gradians() const;
+        double turns() const;
+
+        void set(double value, angle_type unit);
+
+        void degrees(double deg);
+        void radians(double rad);
+        void gradians(double grad);
+        void turns(double turns);
+
+        const angle operator+(const angle& other) const;
+        const angle operator-() const;
+        const angle operator-(const angle& other) const;
+        const angle operator*(double factor) const;
+        const angle operator/(double factor) const;
+    };
+    const angle operator""_deg(long double val);
+    const angle operator""_deg(unsigned long long val);
+    const angle operator""_rad(long double val);
+    const angle operator""_rad(unsigned long long val);
+    const angle operator""_grad(long double val);
+    const angle operator""_grad(unsigned long long val);
+    const angle operator""_turns(long double val);
+    const angle operator""_turns(unsigned long long val);
+
     struct color
     {
         uint8_t r, g, b, a;
@@ -61,6 +110,8 @@ namespace sharp
         int_rect(int left, int top, int width, int height);
         int_rect(const int2 pos, const int2 size);
 
+        static const int_rect from_corners(const int2& a, const int2& b);
+
         const int2 tl() const; // Top left
         const int2 tr() const; // Top right
         const int2 bl() const; // Bottom left

include/sharpsoft/windowing.hpp

@@ -72,7 +72,7 @@ namespace sharp
         void draw_line(const color& color, const int2& start, const int2& end);
         //void draw_rect(const color& color, const int_rect& rect);
 
-        //void fill_rect(const color& color, const int_rect& rect);
+        void fill_rect(const color& color, const int_rect& rect);
 
     public:
         const window_styles& style() const;

src/main.cpp

@@ -16,7 +16,7 @@ protected:
 	{
 		constexpr int points = 5;
 
-		int bigRadius = 100,
+		int bigRadius = 105,
 			smallRadius = 60;
 
 		sharp::int2 center = get_size() / 2;
@@ -35,7 +35,7 @@ protected:
 		{
 			sharp::int2& this_point = arr[i],
 						 next_point = arr[(i + 1) % (points * 2)];
-			draw_line(0xABCDEF, this_point, next_point);
+			fill_rect(0x28b56e, sharp::int_rect::from_corners(this_point, next_point));
 		}
 	}
 	void tick() override

src/sharpsoft/basic_types.cpp

@@ -3,6 +3,146 @@
 
 using namespace sharp;
 
+using std::max;
+using std::min;
+
+static constexpr double degrees_per_turn = 360;
+static constexpr double radians_per_turn = 2 * pi;
+static constexpr double gradians_per_turn = 400;
+
+sharp::angle::angle()
+{
+    value = 0;
+}
+sharp::angle::angle(const angle& copy)
+{
+    value = copy.value;
+}
+sharp::angle::angle(double amount, angle_type unit)
+{
+    set(amount, unit);
+}
+double sharp::angle::get(angle_type unit) const
+{
+    switch (unit)
+    {
+        case DEGREES: return degrees();
+        case RADIANS: return radians();
+        case GRADIANS: return gradians();
+        case TURNS: return turns();
+        default: return 0.0;
+    }
+}
+double sharp::angle::degrees() const
+{
+    return degrees_per_turn * value;
+}
+double sharp::angle::radians() const
+{
+    return radians_per_turn * value;
+}
+double sharp::angle::gradians() const
+{
+    return gradians_per_turn * value;
+}
+double sharp::angle::turns() const
+{
+    return value;
+}
+void sharp::angle::set(double value, angle_type unit)
+{
+    switch (unit)
+    {
+        case DEGREES: degrees(value);
+        case RADIANS: radians(value);
+        case GRADIANS: gradians(value);
+        case TURNS: turns(value);
+        default: return;
+    }
+}
+void sharp::angle::degrees(double deg)
+{
+    value = deg / degrees_per_turn;
+}
+void sharp::angle::radians(double rad)
+{
+    value = rad / radians_per_turn;
+}
+void sharp::angle::gradians(double grad)
+{
+    value = grad / gradians_per_turn;
+}
+void sharp::angle::turns(double turns)
+{
+    value = turns;
+}
+// Doing this somewhat convoluted set system because I don't
+// want to run unneccessary unit detection, I know I'm working
+// with the raw turns.
+const angle sharp::angle::operator+(const angle& other) const
+{
+    angle result = angle();
+    result.value = value + other.value;
+    return result;
+}
+const angle sharp::angle::operator-() const
+{
+    angle result = angle();
+    result.value = -value;
+    return result;
+}
+const angle sharp::angle::operator-(const angle& other) const
+{
+    angle result = angle();
+    result.value = value - other.value;
+    return result;
+}
+const angle sharp::angle::operator*(double factor) const
+{
+    angle result = angle();
+    result.value = value * factor;
+    return result;
+}
+const angle sharp::angle::operator/(double factor) const
+{
+    angle result = angle();
+    result.value = value / factor;
+    return result;
+}
+// These are shorthands.
+const angle sharp::operator""_deg(long double val)
+{
+    return angle(val, DEGREES);
+}
+const angle sharp::operator""_deg(unsigned long long val)
+{
+    return angle(val, DEGREES);
+}
+const angle sharp::operator""_rad(long double val)
+{
+    return angle(val, RADIANS);
+}
+const angle sharp::operator""_rad(unsigned long long val)
+{
+    return angle(val, RADIANS);
+}
+const angle sharp::operator""_grad(long double val)
+{
+    return angle(val, GRADIANS);
+}
+const angle sharp::operator""_grad(unsigned long long val)
+{
+    return angle(val, GRADIANS);
+}
+const angle sharp::operator""_turns(long double val)
+{
+    return angle(val, TURNS);
+}
+const angle sharp::operator""_turns(unsigned long long val)
+{
+    return angle(val, TURNS);
+}
+
 sharp::color::color()
 {
     r = 0;
@@ -140,7 +280,12 @@ sharp::int_rect::int_rect(const int2 pos, const int2 size)
     width = size.x;
     height = size.y;
 }
-
+const int_rect sharp::int_rect::from_corners(const int2& a, const int2& b)
+{
+    int2 tl = int2(min(a.x, b.x), min(a.y, b.y));
+    int2 size = int2(max(a.x, b.x) - tl.x, max(a.y, b.y) - tl.y);
+    return int_rect(tl, size);
+}
 const int2 sharp::int_rect::tl() const
 {
     return int2(top, left);

src/sharpsoft/rendering.cpp

@@ -72,24 +72,67 @@ void window_base::draw_pixel(const color& color, const int2& win_pos)
 }
 void window_base::draw_line(const color& color, const int2& pos_a, const int2& pos_b)
 {
-    // FIXME: This causes artifacts occasionally along the top and bottom of the window.
-    //        Why?
-
     double slope = (double)(pos_b.y - pos_a.y) / (pos_b.x - pos_a.x),
            inv_slope = (double)(pos_b.x - pos_a.x) / (pos_b.y - pos_a.y); // Prevent divide by zero errors.
 
     int2 a = pos_a, b = pos_b;
-    if (a.x < 0) a = int2(0, -a.x * slope + a.y); // Left wall truncate for A.
-    else if (a.x >= width) a = int2(width - 1, ((width - 1) - a.x) * slope + a.y); // Right wall truncate for A.
-    if (a.y < 0) a = int2(-a.y * inv_slope + a.x, 0); // Bottom wall truncate for A.
-    else if (a.y >= height) a = int2(((height - 1) - a.y) * inv_slope + a.x, height - 1); // Top wall truncate for A.
+    if (a.x < 0)
+    {
+        if (b.x < 0) return; // Off screen.
 
+        // Left wall truncate for A.
+        a = int2(0, -a.x * slope + a.y);
+    }
+    else if (a.x >= width)
+    {
+        if (b.x >= width) return; // Off screen.
+
+        // Right wall truncate for A.
+        a = int2(width - 1, ((width - 1) - a.x) * slope + a.y);
+    }
+    if (a.y < 0)
+    {
+        if (b.y < 0) return;
+
+        // Bottom wall truncate for A.
+        a = int2(-a.y * inv_slope + a.x, 0);
+    }
+    else if (a.y >= height)
+    {
+        if (b.y >= height) return;
+
+        // Top wall truncate for A.
+        a = int2(((height - 1) - a.y) * inv_slope + a.x, height - 1);
+    }
+
+    // No checks for the other point need to be made here, because if both
+    // are off screen, it would have triggered in the checks above.
     if (b.x < 0) b = int2(0, -a.x * slope + a.y); // Left wall truncate for B.
     else if (b.x >= width) b = int2(width - 1, ((width - 1) - a.x) * slope + a.y); // Right wall truncate for B.
     if (b.y < 0) b = int2(-a.y * inv_slope + a.x, 0); // Bottom wall truncate for B.
     else if (b.y >= height) b = int2(((height - 1) - a.y) * inv_slope + a.x, height - 1); // Top wall truncate for B.
 
-    const int2 true_pos_a = to_screen(a),
-               true_pos_b = to_screen(b);
-    internal::draw_global_line(color, true_pos_a, true_pos_b);
+    const int2 true_a = to_screen(a),
+               true_b = to_screen(b);
+    internal::draw_global_line(color, true_a, true_b);
+}
+void window_base::fill_rect(const color& color, const int_rect& rect)
+{
+    int2 a = rect.tl(), b = rect.br();
+
+    if (a.x < 0) a.x = 0;
+    else if (a.x >= width) a.x = width;
+    if (a.y < 0) a.y = 0;
+    else if (a.y >= height) a.y = height;
+
+    if (b.x < 0) b.x = 0;
+    else if (b.x >= width) b.x = width;
+    if (b.y < 0) b.y = 0;
+    else if (b.y >= height) b.y = height;
+
+    if (a.x == b.x || a.y == b.y) return; // Zero width or height, ignore.
+
+    const int2 true_a = to_screen(a),
+               true_b = to_screen(b);
+    internal::fill_global_rectangle(color, int_rect(true_a, true_b - true_a));
 }