remove some fix some update some

Author: monkstone

demo/arc_tesselation.rb

@@ -21,7 +21,7 @@ def setup
     sketch_title 'Arc Tesselation'
     # create a java primitive array of signed int
     #  @cols = web_to_color_array(PALETTE)
-    @group = ColorGroup.web_to_color_array(PALETTE)
+    @group = ColorGroup.from_web_array(PALETTE)
     @cols = group.colors
     stroke_weight 1.5
     stroke_cap SQUARE

demo/blend_mode.rb

@@ -8,14 +8,17 @@ class BlendModeSketch < Processing::App
   java_import 'com.jogamp.opengl.GL3'
   java_import 'com.jogamp.opengl.GLContext'
 
+  HALF = 300
+
   attr_reader :gl
   def setup
     sketch_title 'Blend Mode Difference P2D'
     noStroke
     fill(255)
     # DIFFERENCE is not supported in P2D / P3D
     # blendMode(DIFFERENCE)
-    @gl = GLContext.getCurrentGL.getGL2
+    # @gl = GLContext.getCurrentGL.getGL3 # x86_64
+    @gl = GLContext.getCurrentGL.getGL2 # RaspberryPi aarch64
   end
 
   def draw
@@ -25,15 +28,15 @@ def draw
     gl.glBlendFunc(GL3::GL_ONE_MINUS_DST_COLOR, GL3::GL_ZERO)
     20.times do |i|
       sz = 50 + (i % 4) * 50
-      x = width * noise(i * 0.527 + millis * 0.0003)
-      y = height * noise(i * 0.729 + millis * 0.0001)
-      circle(x, y, sz)
+      x = HALF * noise(i * 0.527 + millis * 0.0003)
+      y = HALF * noise(i * 0.729 + millis * 0.0001)
+      circle(x + HALF, y + HALF, sz)
     end
   end
 
   def settings
-    size 600, 600, P3D
-    smooth 8
+    size(2 * HALF, 2 * HALF, P2D)
+    smooth(8)
   end
 end
 

demo/elegant_ball.rb

@@ -7,7 +7,6 @@
 java_import 'monkstone.vecmath.GfxRender'
 
 class ElegantBall < Processing::App
-
   def settings
     size(750, 750, P3D)
   end

demo/reflection.rb

@@ -6,9 +6,8 @@
 # Use Face Struct triangle 'mesh'.
 Face = Struct.new(:a, :b, :c) # triangle mesh face
 
-# Monkey patch the Vec3D class to support rotations
-Vec3D.class_eval do # re-open the Vec3D class to add the rotate methods
-  def rotate_y!(theta)
+Vec3D.class_eval do # re-open the Vec3D class to add rotation functionality
+  def rotate_y(theta)
     co = Math.cos(theta)
     si = Math.sin(theta)
     xx = co * x - si * z
@@ -17,7 +16,7 @@ def rotate_y!(theta)
     self
   end
 
-  def rotate_x!(theta)
+  def rotate_x(theta)
     co = Math.cos(theta)
     si = Math.sin(theta)
     zz = co * z - si * y
@@ -27,8 +26,12 @@ def rotate_x!(theta)
   end
 end
 
-# After a toxiclibs "MeshDoodle" sketch by Karsten Schmidt
 class Doodle < Processing::App
+  # After a toxiclibs "MeshDoodle" sketch by Karsten Schmidt
+  # Adapted to use JRubyArt Vec2D and Vec3D classes by Martin Prout
+  # Note: The extension of Vec3D class to support rotations, and the ruby Struct
+  # Face for triangle 'mesh'. Also an example of AppRenderer for Vec3D => vertex
+
   attr_reader :prev, :p, :q, :rotation, :faces, :pos, :weight
 
   def settings
@@ -68,8 +71,8 @@ def draw
   def mouse_moved
     # get 3D rotated mouse position
     @pos = Vec3D.new(mouse_x - width / 2, mouse_y - height / 2, 0)
-    pos.rotate_x!(rotation.x)
-    pos.rotate_y!(rotation.y)
+    pos.rotate_x(rotation.x)
+    pos.rotate_y(rotation.y)
     # use distance to previous point as target stroke weight
     @weight += (sqrt(pos.dist(prev)) * 2 - weight) * 0.1
     # define offset points for the triangle strip
@@ -84,10 +87,9 @@ def mouse_moved
     @q = b
   end
 
-  # An example of GfxRenderer usage for Vec3D => vertex conversion
   def renderer
-    @renderer ||= Processing::Render::GfxRender.new(self.g)
-  end
+    @renderer ||= GfxRender.new(self.g)
+  end  
 end
 
 Doodle.new