Added rotations for circle, triangle, and quaddev1.2.0-beta.1

1 files changed, 30 insertions, 6 deletions

diff --git a/lib/ruby2d/camera/circle.rb b/lib/ruby2d/camera/circle.rb
index 2896055..98c5152 100644
--- a/lib/ruby2d/camera/circle.rb
+++ b/lib/ruby2d/camera/circle.rb
@@ -11,12 +11,17 @@ module Ruby2D
         return if @hide
 
         angle = Camera.angle * (Math::PI / 180)
+        self_angle = self.angle * (Math::PI / 180)
         half_width = Window.width * 0.5
         half_height = Window.height * 0.5
         temp_radius = @radius * Camera.zoom
-        temp_x = (((@x - Ruby2D::Camera.x + radius) * Math.cos(angle)) - ((@y - Ruby2D::Camera.y + radius) * Math.sin(angle))) * Ruby2D::Camera.zoom + half_width
-        temp_y = (((@x - Ruby2D::Camera.x + radius) * Math.sin(angle)) + ((@y - Ruby2D::Camera.y + radius) * Math.cos(angle))) * Ruby2D::Camera.zoom + half_height
-        Ruby2D::Circle.draw(x: temp_x, y: temp_y,
+        # rotate the shape
+        temp1_x = (x_offset * Math.cos(self_angle)) - (y_offset * Math.sin(self_angle)) + x
+        temp1_y = (y_offset * Math.cos(self_angle)) + (x_offset * Math.sin(self_angle)) + y
+        # apply the camera modifications
+        temp2_x = (((temp1_x - Ruby2D::Camera.x - radius) * Math.cos(angle)) - ((temp1_y - Ruby2D::Camera.y - radius) * Math.sin(angle))) * Ruby2D::Camera.zoom + half_width
+        temp2_y = (((temp1_x - Ruby2D::Camera.x - radius) * Math.sin(angle)) + ((temp1_y - Ruby2D::Camera.y - radius) * Math.cos(angle))) * Ruby2D::Camera.zoom + half_height
+        Ruby2D::Circle.draw(x: temp2_x, y: temp2_y,
                             radius: temp_radius,
                             sectors: sectors,
                             color: [color.r, color.g, color.b, color.a])
@@ -24,13 +29,32 @@ module Ruby2D
 
       def initialize(opts = {})
         super(opts)
+        unless opts[:x_offset].nil?
+          self.x_offset = opts[:x_offset]
+        end
+        unless opts[:y_offset].nil?
+          self.y_offset = opts[:y_offset]
+        end
         Ruby2D::Camera << self
         Window.remove(self)
       end
 
-      def z=(z)
-        super(z)
-        Ruby2D::Camera._sort_by_z
+      def angle
+        @angle ||= 0
+      end
+
+      def angle=(angle)
+        @angle = (angle % 360)
+      end
+
+      attr_writer :x_offset, :y_offset
+
+      def x_offset
+        @x_offset ||= 0
+      end
+
+      def y_offset
+        @y_offset ||= 0
       end
 
       def remove