Andy Meneely
11 years ago
6 changed files with 97 additions and 56 deletions
@ -1 +1,41 @@
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hand.rb |
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module Squib |
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class Deck |
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# Draw cards in a fan. |
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# @api private |
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def render_hand(range, radius, angle_range, trim, trim_radius, margin, |
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fill_color, dir, file) |
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cards = range.collect { |i| @cards[i] } |
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center_x = width / 2.0 |
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center_y = radius + height |
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out_size = 3.0 * center_y |
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angle_delta = (angle_range.last - angle_range.first) / cards.size |
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cxt = Cairo::Context.new(Cairo::RecordingSurface.new(0, 0, out_size, out_size)) |
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cxt.translate(out_size / 2.0, out_size / 2.0) |
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cxt.rotate(angle_range.first) |
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cxt.translate(-width, -width) |
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cards.each_with_index do |card, i| |
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cxt.translate(center_x, center_y) |
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cxt.rotate(angle_delta) |
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cxt.translate(-center_x, -center_y) |
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card.use_cairo do |card_cxt| |
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cxt.rounded_rectangle(trim, trim, |
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width - (2 * trim), height - (2 * trim), |
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trim_radius, trim_radius) |
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cxt.clip |
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cxt.set_source(card_cxt.target) |
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cxt.paint |
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cxt.reset_clip |
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end |
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end |
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x, y, w, h = cxt.target.ink_extents # I love Ruby assignment ;) |
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png_cxt = Cairo::Context.new(Cairo::ImageSurface.new(w + 2*margin, h + 2*margin)) |
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png_cxt.set_source_color(fill_color) |
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png_cxt.paint |
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png_cxt.translate(-x + margin, -y + margin) |
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png_cxt.set_source(cxt.target) |
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png_cxt.paint |
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png_cxt.target.write_to_png("#{dir}/#{file}") |
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end |
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end |
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end |
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@ -1,45 +1,21 @@
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require 'squib' |
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# Built-in layouts are easy to use and extend |
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Squib::Deck.new(cards: 8, layout: 'playing-card.yml') do |
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background color: :white |
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background color: :cyan |
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rect x: 37, y: 37, width: 750, height: 1050, fill_color: :black, radius: 25 |
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rect x: 75, y: 75, width: 675, height: 975, fill_color: :white, radius: 20 |
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text str: ('A'..'H').to_a, layout: :bonus_ul, font: 'Sans bold 100' |
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# hand range: :all, |
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# center_x: :auto, center_y: :auto, |
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# angle_start: 0, angle_end: Math::PI, |
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# width: :auto, height: :auto |
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# save_png prefix: 'hand_' |
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# |
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# Here's the hacky version |
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# So much hardcoded magic to get this to work. Math is hard. |
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# Idea: getting the final image surface extents is hard math for me. Maybe |
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# just put it on a recording surface, then get the extents. |
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# Can't seem to create unbounded surfaces in rcairo, so just make it |
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# massively large enough. Paint the recording surface with proper margins |
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# at the end |
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cxt = Cairo::Context.new(Cairo::ImageSurface.new(2 * 1.3 * height, 2 * 1.3 * height)) |
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cxt.translate( 1.3 * height , 1.3 * height) |
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cxt.rotate(Math::PI / -4.0) |
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cxt.translate( -1.3 * height, -1.3 * height) |
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cxt.translate(500, 500) # I don't even know why I need this |
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angle = (Math::PI / 2.0) / cards.size |
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radius_x, radius_y = 0 + (width / 2.0), 1.3 * height |
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each_with_index do |card, i| |
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cxt.translate(radius_x, radius_y) |
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cxt.rotate(angle) |
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cxt.translate(-radius_x, -radius_y) |
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card.use_cairo do |card_cxt| |
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cxt.rounded_rectangle(37, 37, 825-75, 1125-75, 25, 25) |
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cxt.clip |
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cxt.set_source(card_cxt.target) |
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cxt.paint |
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cxt.reset_clip |
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end |
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end |
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text str: ('A'..'Z').to_a, layout: :bonus_ul, font: 'Sans bold 100' |
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cxt.target.write_to_png('_output/hand.png') |
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# Defaults are sensible |
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hand #saves to _output/hand.png |
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# Here's a prettier version: |
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# - Each card is trimmed with rounded corners |
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# - Zero radius means cards rotate about the bottom of the card |
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# - Cards are shown in reverse order |
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hand trim: 37.5, trim_radius: 25, |
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radius: 0, |
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range: 7.downto(0), |
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file: 'hand_pretty.png' |
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end |
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