1 files changed, 101 insertions, 0 deletions
diff --git a/src/estd/graphics/box.zig b/src/estd/graphics/box.zig
new file mode 100644
index 0000000..83868aa
--- /dev/null
+++ b/src/estd/graphics/box.zig
@@ -0,0 +1,101 @@
+const std = @import("std");
+const graphics = @import("root.zig");
+
+pub const Box = struct {
+	const Self = @This();
+
+	x: u32,
+	y: u32,
+	width: u32,
+	height: u32,
+	color: graphics.Color,
+	radius: u32 = 0,
+
+	fn render_rect(
+		self: *const Self,
+		x: u32,
+		y: u32,
+		width: u32,
+		height: u32,
+		canvas: *const graphics.Canvas
+	) void {
+		if (x >= canvas.width or y >= canvas.height) {
+			return;
+		}
+
+		const x_end = @min(x + width, canvas.width);
+		const y_end = @min(y + height, canvas.height);
+
+		for (y..y_end) |yp| {
+			const offset = yp * canvas.width;
+			@memset(
+				canvas.buffer[(offset + x)..(offset + x_end)],
+				self.color
+			);
+		}
+	}
+
+	pub fn render(self: *const Self, canvas: *const graphics.Canvas) void {
+		if (self.radius == 0) {
+			self.render_rect(self.x, self.y, self.width, self.height, canvas);
+			return;
+		}
+
+		const radius = @min(self.radius, self.width / 2, self.height / 2);
+		const core_width = self.width - 2 * radius;
+		const core_height = self.height - 2 * radius;
+
+		self.render_rect(
+			self.x + radius,
+			self.y,
+			core_width,
+			radius,
+			canvas
+		);
+
+		self.render_rect(
+			self.x + radius,
+			self.y + radius + core_height,
+			core_width,
+			radius,
+			canvas
+		);
+
+		self.render_rect(
+			self.x,
+			self.y + radius,
+			self.width,
+			core_height,
+			canvas
+		);
+
+		for (0..radius) |yp| {
+			const width: u32 = @intFromFloat(@round(std.math.sqrt(@as(f64, @floatFromInt(radius * radius - yp * yp)))));
+			const spacing = radius - width;
+
+			var offset = ((radius - yp) + self.y) * canvas.width + self.x + spacing;
+			@memset(
+				canvas.buffer[offset..offset + width],
+				self.color
+			);
+
+			offset = ((radius - yp) + self.y) * canvas.width + self.x + core_width + radius;
+			@memset(
+				canvas.buffer[offset..offset + width],
+				self.color
+			);
+
+			offset = (yp + self.y + radius + core_height) * canvas.width + self.x + spacing;
+			@memset(
+				canvas.buffer[offset..offset + width],
+				self.color
+			);
+
+			offset = (yp + self.y + radius + core_height) * canvas.width + self.x + core_width + radius;
+			@memset(
+				canvas.buffer[offset..offset + width],
+				self.color
+			);
+		}
+	}
+};