Initial Commit

lib/window.rb

@@ -0,0 +1,126 @@
+class IMICFPS
+  class Window < Gosu::Window
+    include GL
+    include GLU
+    include GLUT
+
+    def initialize(window_width = 1280, window_height = 800, fullscreen = false)
+      # super(window_width, window_height, fullscreen)
+      super(Gosu.screen_width, Gosu.screen_height, true)
+      $window = self
+      @level = Object.new("objects/cube.obj")
+      # @level = Object.new("objects/sponza.obj")
+      @camera = Object::Vertex.new(0,-1,0)
+      @camera_target = Object::Vertex.new(0,-1,0)
+      @speed = 0.05
+      @angle_y = 0 # |
+      @angle_x = 0 # _
+      @mouse = Object::Vertex.new(Gosu.screen_width/2,Gosu.screen_height/2,0)
+      self.mouse_x, self.mouse_y = Gosu.screen_width/2, Gosu.screen_height/2
+
+      @font = Gosu::Font.new(18, name: "DejaVu Sans")
+      @text = "Hello There"
+      @last_frame_time = 0
+      @tick = 0
+      @c1, @c2, @c3 = rand(0.0..1.0), rand(0.0..1.0), rand(0.0..1.0)
+
+      @ambient_light = [0, 0, 0, 1]
+      @diffuse_light = [1, 1, 1, 1]
+      @specular_light = [1, 1, 1, 1]
+      @light_postion = [1, 1, 1, 0]
+
+      # gl do
+        #
+      # end
+    end
+
+    def draw
+      gl do
+        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) # clear the screen and the depth buffer
+        glShadeModel(GL_SMOOTH)
+
+        #glMatrixMode(matrix) indicates that following [matrix] is going to get used
+        glMatrixMode(GL_PROJECTION) # The projection matrix is responsible for adding perspective to our scene.
+        glLoadIdentity # Resets current modelview matrix
+
+        # Calculates aspect ratio of the window. Gets perspective  view. 45 is degree viewing angle, (0.1, 100) are ranges how deep can we draw into the screen
+        gluPerspective(90.0, width / height, 0.1, 100.0)
+        glMatrixMode(GL_MODELVIEW) # The modelview matrix is where object information is stored.
+        glLoadIdentity
+        # Think 3-d coordinate system (x,y,z). +- on each movies on that axis
+        glLightfv(GL_LIGHT0, GL_AMBIENT, @ambient_light)
+        glLightfv(GL_LIGHT0, GL_DIFFUSE, @diffuse_light)
+        glLightfv(GL_LIGHT0, GL_SPECULAR, @specular_light)
+        glLightfv(GL_LIGHT0, GL_POSITION, @light_postion)
+        glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1)
+        glEnable(GL_LIGHTING)
+        glEnable(GL_LIGHT0)
+        glEnable(GL_DEPTH_TEST)
+        glEnable(GL_CULL_FACE)
+
+        glEnable(GL_COLOR_MATERIAL)
+        glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE)
+
+        # glRotatef(@angle_y,0,1,0)
+        # glRotatef(@angle_x,1,0,0)
+        # glTranslate(@x, @y, @z)
+        # glPointSize(5.0)
+        gluLookAt(@camera.x,@camera.y,@camera.z, @angle_x,@angle_y,0, 0,1,0)
+
+        color = [@c1, @c2, @c3]
+        glBegin(GL_TRIANGLES) # begin drawing model
+          @level.faces.each do |vert|
+            vertex = vert[0]
+            normal = vert[1]
+
+            glColor3f(color[0], color[1], color[2])
+            glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, [@c1, @c2, @c3, 1.0])
+            glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, [@c1, @c2, @c3, 1.0])
+            glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, [1,1,1,1])
+            glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, [10.0])
+
+            glNormal3f(normal.x, normal.y, normal.z)
+            glVertex3f(vertex.x, vertex.y, vertex.z)
+          end
+        glEnd
+      end
+
+      @text.split("~").each_with_index do |bit, i|
+        @font.draw(bit.strip, 10, @font.height*i, Float::INFINITY)
+      end
+    end
+
+    def update
+      @text = "Open Vendor: #{glGetString(GL_VENDOR)}~
+      OpenGL Renderer: #{glGetString(GL_RENDERER)} ~
+      OpenGL Version: #{glGetString(GL_VERSION)}~
+      OpenGL Shader Language Version: #{glGetString(GL_SHADING_LANGUAGE_VERSION)}~
+      ~
+      Angle Y: #{@angle_y} Angle X: #{@angle_x} ~
+      X:#{@camera.x} Y:#{@camera.y} Z:#{@camera.z} ~
+      Mesh Vert Array: #{@level.faces.size} ~
+      Last Frame: #{Gosu.milliseconds-@last_frame_time}ms (#{Gosu.fps} fps)"
+      @last_frame_time = Gosu.milliseconds
+
+      # $window.caption = "Gosu OBJ Level - FPS:#{Gosu.fps}"
+      @angle_x-=Integer(@mouse.x-self.mouse_x)
+      @angle_y-=Integer(@mouse.y-self.mouse_y)
+      @angle_x = @angle_x.clamp(-360, 360)
+      @angle_y = @angle_y.clamp(-360, 360)
+      self.mouse_x, self.mouse_y = Gosu.screen_width/2, Gosu.screen_height/2
+
+      @light_postion = [-@camera.x, -@camera.y, -@camera.z, 1]
+      # @light_postion = [1.0, 0.249, 4.09, 1]
+
+      @camera.x-=@speed if $window.button_down?(Gosu::KbRight)
+      @camera.x+=@speed if $window.button_down?(Gosu::KbLeft)
+      @camera.z+=@speed if $window.button_down?(Gosu::KbUp)
+      @camera.z-=@speed if $window.button_down?(Gosu::KbDown)
+
+      @camera.y+=@speed if $window.button_down?(Gosu::KbLeftShift)
+      @camera.y-=@speed if $window.button_down?(Gosu::KbSpace)
+
+      $window.close if $window.button_down?(Gosu::KbEscape)
+    end
+  end
+end