Contents

require_relative 'helper'


class TestBitmap < Test::Unit::TestCase

  W = 32
  H = 16

  def bitmap(w = W, h = H, *args)
    Rays::Bitmap.new w, h, *args
  end

  def color(*args)
    Rays::Color.new(*args)
  end

  def test_initialize()
    assert_equal W, bitmap.width
    assert_equal H, bitmap.height
  end

  def test_dup()
    o          = bitmap
    assert_equal color(0, 0, 0, 0), o[0, 0]
    o[0, 0]    = color(1, 0, 0, 0)
    assert_equal color(1, 0, 0, 0), o[0, 0]
    x          = o.dup
    assert_equal color(1, 0, 0, 0), x[0, 0]
    x[0, 0]    = color(0, 1, 0, 0)
    assert_equal color(0, 1, 0, 0), x[0, 0]
    assert_equal color(1, 0, 0, 0), o[0, 0]
  end

  def test_pixels()
    bmp = bitmap 2, 2, Rays::RGBA
    assert_equal [0] * 4, bmp.pixels

    bmp.pixels = [0xffff0000, 0xff00ff00, 0xff0000ff, 0xffffff00]
    assert_equal [0xffff0000, 0xff00ff00, 0xff0000ff, 0xffffff00], bmp.pixels

    bmp = bitmap 2, 2, Rays::RGBA_float
    assert_equal [0,0,0,0] * 4, bmp.pixels

    bmp.pixels = [1,0,0,1, 0,1,0,1, 0,0,1,1, 1,1,0,1]
    assert_equal [1,0,0,1, 0,1,0,1, 0,0,1,1, 1,1,0,1], bmp.pixels
  end

  def test_at()
    o       = bitmap
    assert_equal color(0, 0, 0, 0), o[0, 0]

    o[0, 0] =          1
    assert_equal color(1, 1, 1, 1), o[0, 0]

    o[0, 0] =         [0, 1, 0]
    assert_equal color(0, 1, 0, 1), o[0, 0]

    o[0, 0] =         [0, 1, 0, 0]
    assert_equal color(0, 1, 0, 0), o[0, 0]

    o[0, 0] =    color(0, 0, 1)
    assert_equal color(0, 0, 1, 1), o[0, 0]

    o[0, 0] =    color(0, 0, 1, 0)
    assert_equal color(0, 0, 1, 0), o[0, 0]
  end

  def test_to_a()
    colors = %w[#f00 #0f0 #00f #ff0].map {|s| color s}
    bmp = bitmap 2, 2
    bmp[0, 0], bmp[1, 0], bmp[0, 1], bmp[1, 1] = colors
    assert_equal colors, bmp.to_a
  end

end# TestBitmap

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
rays-0.2.1	test/test_bitmap.rb
rays-0.2	test/test_bitmap.rb
rays-0.1.49	test/test_bitmap.rb
rays-0.1.48	test/test_bitmap.rb