while not glfw.window_should_close(window): # poll the time to try to get a constant framerate while (glfw.get_time() < time_at_beginning_of_previous_frame + 1.0 / TARGET_FRAMERATE): pass # set for comparison on the next frame time_at_beginning_of_previous_frame = glfw.get_time() # Poll for and process events glfw.poll_events() width, height = glfw.get_framebuffer_size(window) glViewport(0, 0, width, height) glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) ms.setToIdentityMatrix(ms.MatrixStack.model) ms.setToIdentityMatrix(ms.MatrixStack.view) ms.setToIdentityMatrix(ms.MatrixStack.projection) # render scene width, height = glfw.get_framebuffer_size(window) glViewport(0, 0, width, height) glClearColor(0.0, 0.0, 0.0, 1.0) # r # g # b # a glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT) handle_inputs() axes_list = glfw.get_joystick_axes(glfw.JOYSTICK_1) if len(axes_list) >= 1 and axes_list[0]: if math.fabs(float(axes_list[0][0])) > 0.19: camera.x += 10.0 * axes_list[0][0] * math.cos(camera.rot_y)
def demo(): # Initialize the library if not glfw.init(): sys.exit() glfw.window_hint(glfw.CONTEXT_VERSION_MAJOR, 3) glfw.window_hint(glfw.CONTEXT_VERSION_MINOR, 3) glfw.window_hint(glfw.OPENGL_PROFILE, glfw.OPENGL_CORE_PROFILE) # for osx glfw.window_hint(glfw.OPENGL_FORWARD_COMPAT, gl.GL_TRUE) # Create a windowed mode window and its OpenGL context window = glfw.create_window(1000, 1000, "pyNuklear demo - GLFW OpenGL3", None, None) if not window: glfw.terminate() sys.exit() # Make the window's context current glfw.make_context_current(window) ctx = nkglfw3.glfw3_init(window, nkglfw3.GLFW3_INSTALL_CALLBACKS) nuklear = nk.NuklearContext(ctx) fontAtlas = nkglfw3.FontAtlas() nkglfw3.glfw3_font_stash_begin(ctypes.byref(fontAtlas)) nkglfw3.glfw3_font_stash_end() # Install a key handler def on_key(window, key, scancode, action, mods): if key == glfw.KEY_ESCAPE and action == glfw.PRESS: glfwSetWindowShouldClose(window, 1) glfw.set_key_callback(window, on_key) gl.glClearColor(0.1, 0.18, 0.24, 1.0) gl.glEnable(gl.GL_DEPTH_TEST) gl.glClearDepth(1.0) gl.glDepthFunc(gl.GL_LEQUAL) class Camera: def __init__(self): self.x = 0.0 self.y = 0.0 self.z = 10.0 self.rotationX = 0.0 self.rotationY = 0.0 camera = Camera() triangle = Triangle() triangle.prepareToRender() # does python have static local variables? this declaration is way too far away from use #property = ctypes.c_int(20) # Loop until the user closes the window while not glfw.window_should_close(window): # Render here # Poll for and process events glfw.poll_events() nkglfw3.glfw3_new_frame() width, height = glfw.get_framebuffer_size(window) gl.glViewport(0, 0, width, height) gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT) ms.setToIdentityMatrix(ms.MatrixStack.model) ms.setToIdentityMatrix(ms.MatrixStack.view) ms.setToIdentityMatrix(ms.MatrixStack.projection) # set the projection matrix to be perspective ms.perspective(fov=45.0, aspectRatio=width / height, nearZ=0.1, farZ=10000.0) # get input from keyboard for camera movement if not nuklear.item_is_any_active(): # set up Camera if glfw.get_key(window, glfw.KEY_RIGHT) == glfw.PRESS: camera.rotationY -= 0.03 if glfw.get_key(window, glfw.KEY_LEFT) == glfw.PRESS: camera.rotationY += 0.03 if glfw.get_key(window, glfw.KEY_UP) == glfw.PRESS: camera.x -= math.sin(camera.rotationY) camera.z -= math.cos(camera.rotationY) if glfw.get_key(window, glfw.KEY_DOWN) == glfw.PRESS: camera.x += math.sin(camera.rotationY) camera.z += math.cos(camera.rotationY) # move the camera to the correct position, which means # updating the view stack ms.rotateX(ms.MatrixStack.view, camera.rotationX) ms.rotateY(ms.MatrixStack.view, -camera.rotationY) ms.translate(ms.MatrixStack.view, -camera.x, -camera.y, -camera.z) # render the models triangle.render() MAX_VERTEX_BUFFER = 512 * 1024 MAX_ELEMENT_BUFFER = 128 * 1024 if (nuklear.begin(title="Demonstration", bounds=nk.Rect(10.0, 10.0, 230.0, 250.0), flags=nk.PanelFlags.WINDOW_BORDER.value | nk.PanelFlags.WINDOW_MOVABLE.value | nk.PanelFlags.WINDOW_SCALABLE.value | nk.PanelFlags.WINDOW_MINIMIZABLE.value | nk.PanelFlags.WINDOW_TITLE.value)): nuklear.layout_row_static(height=30.0, item_width=80, columns=5) if nuklear.button_label(title="button"): print('button pressed') nuklear.layout_row_dynamic(height=30.0, columns=2) try: op except Exception: op = 0 if nuklear.option_label(label="easy", active=op == 0): op = 0 if nuklear.option_label(label="hard", active=op == 1): op = 1 nuklear.layout_row_dynamic(height=25.0, columns=1) try: prop except Exception: prop = 20 prop = nuklear.property_int(name="Compression:", minV=0, val=prop, maxV=100, step=10, inc_per_pixel=1) nuklear.layout_row_dynamic(height=20.0, columns=1) nuklear.label(text="background:", alignment=nk.TextAlign.TEXT_LEFT) try: background except Exception: background = nk.ColorF(r=0.10, g=0.18, b=0.24, a=1.0) nuklear.layout_row_dynamic(height=25.0, columns=1) if nuklear.combo_begin_color(color=nuklear.rgb_cf(background), size=nk.Vec2(nuklear.widget_width(), 400)): nuklear.layout_row_dynamic(height=120.0, columns=1) background = nuklear.color_picker(color=background, format=nk.ColorFormat.RGBA) nuklear.layout_row_dynamic(height=25.0, columns=1) background.r = nuklear.propertyf(name="#R:", minVal=0.0, val=background.r, maxVal=1.0, step=0.01, inc_per_pixel=0.005) background.g = nuklear.propertyf(name="#G:", minVal=0.0, val=background.g, maxVal=1.0, step=0.01, inc_per_pixel=0.005) background.b = nuklear.propertyf(name="#B:", minVal=0.0, val=background.b, maxVal=1.0, step=0.01, inc_per_pixel=0.005) background.a = nuklear.propertyf(name="#A:", minVal=0.0, val=background.a, maxVal=1.0, step=0.01, inc_per_pixel=0.005) gl.glClearColor(background.r, background.g, background.b, background.a) nuklear.combo_end() nuklear.end() overview(nuklear) nkglfw3.glfw3_render(nk.AntiAliasing.ON.value, MAX_VERTEX_BUFFER, MAX_ELEMENT_BUFFER) # done with frame, flush and swap buffers # Swap front and back buffers glfw.swap_buffers(window) glfw.terminate()