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monkstonemonkstone
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more toxi examples
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‎external_library/gem/toxiclibs/color_utils/color_presets.rb‎

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#!/usr/bin/env jruby
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require 'propane'
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class ColorPresets < Propane::App
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load_library :hype
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include_package 'hype'
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java_import 'hype.extended.layout.HGridLayout'
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# string color array
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PALETTE = %w(
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CLEAR
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WHITE
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BLACK
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LGREY
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GREY
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DGREY
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RED
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GREEN
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BLUE
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CYAN
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YELLOW
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MAGENTA
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).freeze
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# format string see fill below
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FSTRING = 'Java::HypeInterfaces::HConstants::%s'.freeze
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def settings
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size(640, 640)
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end
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def setup
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sketch_title 'Color Presets'
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H.init(self)
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H.background(color('#242424'))
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grid = HGridLayout.new(3).spacing(210, 157).start_loc(10, 10)
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PALETTE.each do |col|
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H.add(HRect.new(200, 147))
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.stroke_weight(3)
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.stroke(H::BLACK, 150.0) # Note we call hype constants
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.fill(instance_eval(format(FSTRING, col))) # and using eval
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.loc(grid.get_next_point)
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end
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end
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def draw
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H.draw_stage
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no_loop
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end
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end
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ColorPresets.new

‎external_library/gem/toxiclibs/color_utils/color_theme.rb‎

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# ColorTheme demo showing the following:
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# - construction of TColor themes via textual descriptions of shades and Colors
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# - adding an rand element to the theme
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#
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# Press SPACE to toggle rendering mode, any other key will re-generate a
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# random variation of the color theme
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#
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# @author Karsten Schmidt <info at postspectacular dot com>
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# Copyright (c) 2009 Karsten Schmidt
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#
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# This demo & library is free software you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# http://creativecommons.org/licenses/LGPL/2.1/
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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require 'toxiclibs'
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include_package 'toxi.color'
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include_package 'toxi.util.datatypes'
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SWATCH_HEIGHT = 40.0
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SWATCH_WIDTH = 5.0
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SWATCH_GAP = 1
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MAX_SIZE = 150.0
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NUM_DISCS = 300
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attr_reader :show_discs
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def settings
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size(1024, 768)
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# smooth
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end
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def setup
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sketch_title 'Color Theme'
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@show_discs = true
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noise_detail(2)
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no_loop
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end
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def draw
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# first define our new theme
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t = ColorTheme.new('test')
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# add different color options, each with their own weight
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t.add_range('soft ivory', 0.5)
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t.add_range('intense goldenrod', 0.25)
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t.add_range('warm saddlebrown', 0.15)
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t.add_range('fresh teal', 0.05)
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t.add_range('bright yellowgreen', 0.05)
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# now add another rand hue which is using only bright shades
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t.add_range(ColorRange::BRIGHT, TColor.new_random, rand(0.02..0.05))
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# use the TColor theme to create a list of 160 Colors
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list = t.get_colors(160)
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if show_discs
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background(list.get_lightest.toARGB)
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discs(list)
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else
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background(0)
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yoff = 32
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list.sort_by_distance(false)
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swatches(list, 32, yoff)
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yoff += SWATCH_HEIGHT + 10
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list.sort_by_criteria(AccessCriteria::LUMINANCE, false)
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swatches(list, 32, yoff)
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yoff += SWATCH_HEIGHT + 10
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list.sort_by_criteria(AccessCriteria::BRIGHTNESS, false)
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swatches(list, 32, yoff)
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yoff += SWATCH_HEIGHT + 10
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list.sort_by_criteria(AccessCriteria::SATURATION, false)
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swatches(list, 32, yoff)
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yoff += SWATCH_HEIGHT + 10
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list.sort_by_criteria(AccessCriteria::HUE, false)
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swatches(list, 32, yoff)
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yoff += SWATCH_HEIGHT + 10
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list.sort_by_proximity_to(NamedColor::WHITE, RGBDistanceProxy.new, false)
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swatches(list, 32, yoff)
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end
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# save_frame(format('theme-%s%s', timestamp, '_##.png'))
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end
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def timestamp
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Time.now.strftime('%Y%d%m_%H%M%S')
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end
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def key_pressed
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@show_discs = !show_discs if key == ' '
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redraw
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end
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def swatches(sorted, x, y)
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no_stroke
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colors = sorted.toARGBArray.to_a
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colors.each do |c|
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fill(c)
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rect(x, y, SWATCH_WIDTH, SWATCH_HEIGHT)
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x += SWATCH_WIDTH + SWATCH_GAP
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end
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end
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def discs(list)
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no_stroke
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colors = list.toARGBArray.to_a
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colors.shuffle.each do |c|
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fill(c, rand(125.0..255)) # random transparency
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r = rand(MAX_SIZE)
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ellipse(rand(width), rand(height), r, r)
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end
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end

‎external_library/gem/toxiclibs/simulation/ca_ornament.rb‎

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# <p>Much like the GameOfLife example, this de_mo shows the basic usage
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# pattern for the 2D cellular automata imple_mentation, this time however
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# utilizing cell aging and using a tone map to render its current state.
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# The CA simulation can be configured with birth and survival rules to
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# create all the complete set of rules with a 3x3 cell evaluation kernel.</p>
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#
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# <p><strong>Usage:</strong><ul>
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# <li>click + drag mouse to disturb the CA matrix</li>
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# <li>press 'r' to restart simulation</li>
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# </ul></p>
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#
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# Copyright (c) 2011 Karsten Schmidt
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#
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# This de_mo & library is free software you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# http://creativecommons.org/licenses/LGPL/2.1/
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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require 'toxiclibs'
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include_package 'toxi.sim.automata'
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include_package 'toxi.math'
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include_package 'toxi.color'
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attr_reader :ca, :tone_map
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def settings
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size(680, 382, P2D)
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end
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def setup
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sketch_title 'CA Ornament'
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# the birth rules specify options for when a cell becomes active
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# the numbers refer to the amount of ACTIVE neighbour cells allowed,
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# their order is irrelevant
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birth_rules = [1, 5, 7].to_java Java::byte
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# survival rules specify the possible numbers of allowed or required
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# ACTIVE neighbour cells in order for a cell to stay alive
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survival_rules = [0, 3, 5, 6, 7, 8].to_java Java::byte
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# setup cellular automata matrix
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@ca = CAMatrix.new(width, height)
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# unlike traditional CA's only supporting binary cell states
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# this implementation supports a flexible number of states (cell age)
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# in this demo cell states reach from 0 - 255
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rule = CARule2D.new(birth_rules, survival_rules, 256, false)
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# we also want cells to automatically die when they've reached their
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# maximum age
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rule.set_auto_expire(true)
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# finally assign the rules to the CAMatrix
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ca.set_rule(rule)
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# create initial seed pattern
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ca.draw_box_at(0, height / 2, 5, 1)
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# create a gradient for rendering/shading the CA
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grad = ColorGradient.new
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# NamedColors are preset colors, but any TColor can be added
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# see javadocs for list of names:
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# http://toxiclibs.org/docs/colorutils/toxi/color/NamedColor::html
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grad.add_color_at(0, NamedColor::BLACK)
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grad.add_color_at(64, NamedColor::CYAN)
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grad.add_color_at(128, NamedColor::YELLOW)
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grad.add_color_at(192, NamedColor::WHITE)
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grad.add_color_at(255, NamedColor::BLACK)
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# the tone map will map cell states/ages to a gradient color
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@tone_map = ToneMap.new(0, rule.get_state_count - 1, grad)
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end
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def draw
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load_pixels
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ca.draw_box_at(mouse_x, mouse_y, 5, 1) if mouse_pressed?
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ca.update
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tone_map.get_tone_mapped_array(ca.get_matrix, pixels)
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update_pixels
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end
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def key_pressed
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return unless key == 'r'
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ca.reset
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end

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