main.rb

$gtk.reset

require 'app/lib/dinraal.rb'

def make_rt(args)
  args.render_target(:static_rt).clear_before_render = true

  args.render_target(:static_rt).primitives << Dinraal.circle_outline(x: 20, y: 580, radius: 20, g: 255)

  args.render_target(:static_rt).primitives << Dinraal.triangle_outline(args.state.tri2)
  args.render_target(:static_rt).primitives << Dinraal.triangle_center(args.state.tri2).merge(w: 5, h: 5, g: 255).solid!
  args.render_target(:static_rt).primitives << Dinraal.triangle_bounding_box(args.state.tri2)

  args.render_target(:static_rt).primitives << Dinraal.circle({x: 100, y: 360, radius: 50, b: 255})
end

def tick(args)
  # args.state.tri1 ||= { x: 800, y: 500, x2: 450, y2: 650, x3: 400, y3: 300, path: 'sprites/rick.png', image_width: 300 }

  hue = (args.state.tick_count % 360).round

  tri1 = { x: 800, y: 500, x2: 450, y2: 650, x3: 400, y3: 300}.merge(x: args.inputs.mouse.x, y: args.inputs.mouse.y).merge(Dinraal.hsv_to_rgb(hue, 1, 1))
  args.state.tri2 ||= { x: 200, y: 600, x2: 400, y2: 600, x3: 275, y3: 500, r: 255 }

  if args.state.tick_count.zero?
    make_rt(args)
  end

  outputs = []
  
  outputs << { x: 0, y: 0, w: 1280, h: 720, path: :static_rt }.sprite!
  
  outputs << Dinraal.triangle(tri1)

  mouse_x = args.inputs.mouse.x
  mouse_y = args.inputs.mouse.y

  mouse_inside = Dinraal.point_inside_triangle?(point: { x: mouse_x, y: mouse_y }, triangle: tri1)

  outputs << { x: args.grid.center_x, y: 720, text: "Mouse inside image: #{mouse_inside}", alignment_enum: 1 }.label!

  two_contains_one = Dinraal.triangle_inside_triangle?(inner: args.state.tri2, outer: tri1)
  outputs << { x: args.grid.center_x, y: 700, text: "Image contains red triangle: #{two_contains_one}", alignment_enum: 1 }.label!

  args.outputs.primitives << outputs

  # Optional Debug Information. Uncomment to show
  args.outputs.debug << args.gtk.framerate_diagnostics_primitives
end