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const std = @import("std");
const graphics = @import("root.zig");
pub const Curve = struct {
const Self = @This();
const Point = struct {
x: u32,
y: u32,
};
start: Point,
middle: Point,
end: Point,
color: graphics.Color,
pub fn render(self: *const Self, canvas: *const graphics.Canvas) void {
const start_x: f64 = @floatFromInt(self.start.x);
const start_y: f64 = @floatFromInt(self.start.y);
const middle_x: f64 = @floatFromInt(self.middle.x);
const middle_y: f64 = @floatFromInt(self.middle.y);
const end_x: f64 = @floatFromInt(self.end.x);
const end_y: f64 = @floatFromInt(self.end.y);
for (0..100) |index| {
const t: f64 = @as(f64, @floatFromInt(index)) / 100;
const x: u32 = @intFromFloat(@round(
(1 - t) * ((1 - t) * start_x + t * middle_x) + t * ((1 - t) * middle_x + t * end_x)
));
const y: u32 = @intFromFloat(@round(
(1 - t) * ((1 - t) * start_y + t * middle_y) + t * ((1 - t) * middle_y + t * end_y)
));
canvas.buffer[x + canvas.width * y] = self.color;
}
}
};
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