mirror of
https://github.com/SleepingInsomniac/pixelfaucet
synced 2025-01-15 15:41:08 +01:00
91 lines
2.4 KiB
Crystal
91 lines
2.4 KiB
Crystal
|
require "../src/game"
|
||
|
|
require "../src/bezier"
|
||
|
|
|
||
|
|
module PF
|
||
|
|
class CubicBezier < PF::Game
|
||
|
|
@curve : BezierCubic(Float64)
|
||
|
|
|
||
|
|
@hover_point : Vector2(Float64)*? = nil
|
||
|
|
@selected_point : Vector2(Float64)*? = nil
|
||
|
|
|
||
|
|
@mouse_pos : Vector2(Int32) = Vector[0, 0]
|
||
|
|
|
||
|
|
def initialize(*args, **kwargs)
|
||
|
|
super
|
||
|
|
@curve = BezierCubic.new(
|
||
|
|
Vector[width * 0.25, height * 0.75],
|
||
|
|
Vector[width * 0.33, height * 0.5],
|
||
|
|
Vector[width * 0.66, height * 0.5],
|
||
|
|
Vector[width * 0.75, height * 0.75]
|
||
|
|
)
|
||
|
|
|
||
|
|
@controller = PF::Controller(Keys).new({
|
||
|
|
Keys::KEY_1 => "p1",
|
||
|
|
Keys::KEY_2 => "p2",
|
||
|
|
Keys::KEY_3 => "p3",
|
||
|
|
Keys::KEY_4 => "p4",
|
||
|
|
|
||
|
|
Keys::UP => "up",
|
||
|
|
Keys::LEFT => "left",
|
||
|
|
Keys::DOWN => "down",
|
||
|
|
Keys::RIGHT => "right",
|
||
|
|
})
|
||
|
|
end
|
||
|
|
|
||
|
|
def update(dt, event)
|
||
|
|
@controller.map_event(event)
|
||
|
|
|
||
|
|
case event
|
||
|
|
when SDL::Event::MouseButton
|
||
|
|
if event.pressed? && event.button == 1
|
||
|
|
@selected_point = @hover_point
|
||
|
|
end
|
||
|
|
|
||
|
|
if event.released? && event.button == 1
|
||
|
|
@selected_point = nil
|
||
|
|
end
|
||
|
|
when SDL::Event::MouseMotion
|
||
|
|
@mouse_pos = Vector[event.x, event.y] // scale
|
||
|
|
|
||
|
|
unless point = @selected_point
|
||
|
|
@hover_point = @curve.points.find { |p| @mouse_pos.distance(p.value) < 4 }
|
||
|
|
else
|
||
|
|
point.value.x = @mouse_pos.x.to_f
|
||
|
|
point.value.y = @mouse_pos.y.to_f
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
def draw
|
||
|
|
clear
|
||
|
|
|
||
|
|
draw_line(@curve.p0, @curve.p1, Pixel.new(100, 100, 100))
|
||
|
|
draw_line(@curve.p3, @curve.p2, Pixel.new(100, 100, 100))
|
||
|
|
|
||
|
|
point = @curve.p0
|
||
|
|
0.upto(100) do |x|
|
||
|
|
t = x / 100
|
||
|
|
next_point = @curve.at(t)
|
||
|
|
draw_line(point.to_i, next_point.to_i, Pixel.white)
|
||
|
|
point = next_point
|
||
|
|
end
|
||
|
|
|
||
|
|
fill_circle(@curve.p0.to_i, 1, Pixel.blue)
|
||
|
|
fill_circle(@curve.p1.to_i, 1, Pixel.blue)
|
||
|
|
fill_circle(@curve.p2.to_i, 1, Pixel.blue)
|
||
|
|
fill_circle(@curve.p3.to_i, 1, Pixel.blue)
|
||
|
|
|
||
|
|
draw_string("P1", @curve.p0.to_i, Pixel.white)
|
||
|
|
draw_string("P2", @curve.p1.to_i, Pixel.white)
|
||
|
|
draw_string("P3", @curve.p2.to_i, Pixel.white)
|
||
|
|
draw_string("P4", @curve.p3.to_i, Pixel.white)
|
||
|
|
|
||
|
|
if point = @hover_point
|
||
|
|
draw_circle(point.value.to_i, 5, Pixel.yellow)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
engine = PF::CubicBezier.new(500, 500, 2).run!
|