Simple scene graph and OpenGL 3.3 renderer for data structures from anim_utils
The code was developed as a side project for debugging purposes based on the following sources:
http://www.glprogramming.com/
https://learnopengl.com
http://www.lighthouse3d.com/tutorials
https://www.youtube.com/user/ThinMatrix
Note: To use the library on Windows, please install the PyOpenGL wheel provided by Cristoph Gohlke which also contains the GLUT-DLLs: https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyopengl
from vis_utils.glut_app import GLUTApp
from vis_utils.scene.task_manager import Task
def print_global_vars(dt, app):
scene = app.scene
lines = []
for key in scene.global_vars:
value = str(scene.global_vars[key])
lines.append(key+": "+value)
app.set_console_lines(lines)
def control_func(key, params):
app, controller = params
if key == str.encode(" "):
controller.toggleAnimation()
elif key == str.encode("l"):
controller.loopAnimation = not controller.loopAnimation
app.scene.global_vars["frame"] = controller.get_current_frame_idx()
app.scene.global_vars["loop"] = controller.loopAnimation
app.scene.global_vars["speed"] = controller.animationSpeed
def main(bvh_file):
c_pose = dict()
c_pose["zoom"] = -500
c_pose["position"] = [0, 0, -50]
c_pose["angles"] = (45, 200)
app = GLUTApp(800, 600, title="bvh player",console_scale=0.4, camera_pose=c_pose)
o = app.scene.object_builder.create_object_from_file("bvh", bvh_file)
c = o._components["animation_controller"]
app.keyboard_handler["control"] = (control_func, (app, c))
app.scene.draw_task_manager.add("print", Task("print", print_global_vars, app))
app.run()
main("example.bvh")
The library also supports the import of character meshes and skeletons from glb and fbx files. To enable the fbx support a custom FBX SDK Wrapper has to be build and copied into the directory "vis_utils/io".
app.scene.object_builder.create_object_from_file("glb", glb_file)
app.scene.object_builder.create_object_from_file("fbx", fbx_file)Erik Herrmann (erik.herrmann at dfki.de)
Copyright (c) 2019 DFKI GmbH.
MIT License, see the LICENSE file.