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vaiorabbit/test.rb

Created January 4, 2024 17:01
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  1. vaiorabbit created this gist Jan 4, 2024.
    82 changes: 82 additions & 0 deletions test.rb
    View file
    Original file line number Diff line number Diff line change
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    require_relative '../lib/blend2d.rb'
    require_relative 'util'

    include Blend2D

    if __FILE__ == $PROGRAM_NAME
    load_blend2d_lib()

    img = BLImageCore.new
    r = blImageInitAs(img.pointer, 480, 480, BL_FORMAT_PRGB32)

    ctx = BLContextCore.new
    r = blContextInitAs(ctx.pointer, img.pointer, nil)

    blContextClearAll(ctx.pointer)

    # First shape
    radial = BLGradientCore.new
    radialValues = BLRadialGradientValues.new
    radialValues[:x0] = 180.0
    radialValues[:y0] = 180.0
    radialValues[:x1] = 180.0
    radialValues[:y1] = 180.0
    radialValues[:r0] = 180.0

    blGradientInitAs(radial.pointer, BL_GRADIENT_TYPE_RADIAL, radialValues.pointer, BL_EXTEND_MODE_PAD, nil, 0, nil)
    blGradientAddStopRgba32(radial.pointer, 0.0, 0xFFFFFFFF)
    blGradientAddStopRgba32(radial.pointer, 1.0, 0xFFFF6F3F)

    circle = BLCircle.new
    circle[:cx] = 180.0
    circle[:cy] = 180.0
    circle[:r] = 160.0

    blContextFillGeometryExt(ctx.pointer, BL_GEOMETRY_TYPE_CIRCLE, circle.pointer, radial.pointer)

    blGradientDestroy(radial.pointer)
    radial = nil

    # Second shape
    linear = BLGradientCore.new
    linearValues = BLLinearGradientValues.new
    linearValues[:x0] = 195.0
    linearValues[:y0] = 195.0
    linearValues[:x1] = 470.0
    linearValues[:y1] = 470.0

    blGradientInitAs(linear.pointer, BL_GRADIENT_TYPE_LINEAR, linearValues.pointer, BL_EXTEND_MODE_PAD, nil, 0, nil)
    blGradientAddStopRgba32(linear.pointer, 0.0, 0xFFFFFFFF)
    blGradientAddStopRgba32(linear.pointer, 1.0, 0xFF3F9FFF)

    # blContextSetCompOp(ctx.pointer, BL_COMP_OP_DIFFERENCE) # cause of blContextFillGeometryExt '65543 NOT_IMPLEMENTED' ?
    # Ref.:
    # - https://github.com/blend2d/blend2d/issues/182
    # - https://github.com/blend2d/blend2d/issues/181
    blContextSetCompOp(ctx.pointer, BL_COMP_OP_PLUS)

    roundRect = BLRoundRect.new
    roundRect[:x] = 195.0
    roundRect[:y] = 195.0
    roundRect[:w] = 270.0
    roundRect[:h] = 270.0
    roundRect[:rx] = 25.0
    roundRect[:ry] = 25.0
    p blContextFillGeometryExt(ctx.pointer, BL_GEOMETRY_TYPE_ROUND_RECT, roundRect.pointer, linear.pointer)

    blGradientDestroy(linear.pointer)
    linear = nil

    blContextDestroy(ctx.pointer)
    ctx = nil

    codec = BLImageCodecCore.new

    blImageCodecInitByName(codec.pointer, "PNG", "PNG".chars.length, nil)
    blImageWriteToFile(img.pointer, "bl_sample_capi.png", codec.pointer)
    blImageCodecDestroy(codec.pointer)
    codec = nil

    blImageDestroy(img.pointer)
    img = nil
    end