lib/lib/p3d/gfx.py

   1 import datetime
   2 from logging import debug, info
   3 from os import getcwd
   4 from os.path import exists, dirname
   5 from panda3d.core import get_model_path, AntialiasAttrib, PandaNode, \
   6     LightRampAttrib, Camera, OrthographicLens, NodePath, OmniBoundingVolume, \
   7     AmbientLight as P3DAmbientLight, Spotlight as P3DSpotlight, Point2, \
   8     Point3, Texture
   9 from direct.filter.CommonFilters import CommonFilters
  10 from direct.actor.Actor import Actor
  11 from lib.lib.p3d.p3d import LibP3d
  12
  13
  14 class RenderToTexture:
  15
  16     def __init__(self, size=(256, 256)):
  17         self.__set_buffer(size)
  18         self.__set_display_region()
  19         self.__set_camera()
  20         self.__set_root()
  21         self.display_region.set_camera(self.camera)
  22
  23     def __set_buffer(self, size):
  24         self.buffer = base.win.make_texture_buffer('result buffer', size[0],
  25                                                    size[1])
  26         self.buffer.set_sort(-100)
  27
  28     def __set_display_region(self):
  29         self.display_region = self.buffer.make_display_region()
  30         self.display_region.set_sort(20)
  31
  32     def __set_camera(self):
  33         self.camera = NodePath(Camera('camera 2d'))
  34         lens = OrthographicLens()
  35         lens.set_film_size(1, 1)
  36         lens.set_near_far(-1000, 1000)
  37         self.camera.node().set_lens(lens)
  38
  39     def __set_root(self):
  40         self.root = NodePath('root')
  41         self.root.set_depth_test(False)
  42         self.root.set_depth_write(False)
  43         self.camera.reparent_to(self.root)
  44
  45     @property
  46     def texture(self): return self.buffer.get_texture()
  47
  48     def destroy(self):
  49         base.graphicsEngine.remove_window(self.buffer)
  50         if base.win:  # if you close the window during a race
  51             base.win.remove_display_region(self.display_region)
  52         list(map(lambda node: node.remove_node(), [self.camera, self.root]))
  53
  54
  55 class P3dGfxMgr:
  56
  57     def __init__(self, model_path, antialiasing, shaders, srgb):
  58         self.root = P3dNode(render)
  59         self.__srgb = srgb
  60         self.callbacks = {}
  61         self.filters = None
  62         get_model_path().append_directory(model_path)
  63         if LibP3d.runtime():
  64             root_dir = LibP3d.p3dpath(dirname(__file__))
  65             paths = [root_dir + '/' + model_path, root_dir]
  66             list(map(get_model_path().append_directory, paths))
  67         render.set_shader_auto()
  68         # render.set_two_sided(True)  # it breaks shadows
  69         if antialiasing: render.set_antialias(AntialiasAttrib.MAuto)
  70         if shaders and base.win:
  71             self.filters = CommonFilters(base.win, base.cam)
  72
  73     def load_model(self, filename, callback=None, anim=None):
  74         ext = '.bam' if exists(filename + '.bam') else ''
  75         if anim:
  76             anim_dct = {'anim': filename + '-Anim' + ext}
  77             node = P3dNode(self.set_srgb(Actor(filename + ext, anim_dct)))
  78         elif callback:
  79             callb = lambda model: callback(P3dNode(self.set_srgb(model)))
  80             node = loader.loadModel(filename + ext, callback=callb)
  81         else:
  82             node = P3dNode(self.set_srgb(
  83                 loader.loadModel(LibP3d.p3dpath(filename + ext))))
  84         return node
  85
  86     def set_srgb(self, model):
  87         if self.__srgb:
  88             for texture in model.find_all_textures():
  89                 if texture.get_format() in [Texture.F_rgba, Texture.F_rgbm]:
  90                     texture.set_format(Texture.F_srgb_alpha)
  91                 elif texture.get_format() in [Texture.F_rgb]:
  92                     texture.set_format(Texture.F_srgb)
  93         return model
  94
  95     @staticmethod
  96     def toggle_aa():
  97         aa_not_none = render.get_antialias() != AntialiasAttrib.MNone
  98         if render.has_antialias() and aa_not_none:
  99             render.clear_antialias()
 100         else: render.set_antialias(AntialiasAttrib.MAuto, 1)
 101
 102     def set_toon(self):
 103         tmp_node = NodePath(PandaNode('temp node'))
 104         tmp_node.set_attrib(LightRampAttrib.make_single_threshold(.5, .4))
 105         tmp_node.set_shader_auto()
 106         base.cam.node().set_initial_state(tmp_node.get_state())
 107         self.filters.set_cartoon_ink(separation=1)
 108
 109     def set_bloom(self):
 110         if not base.win: return
 111         self.filters.setBloom(
 112             blend=(.3, .4, .3, 0), mintrigger=.6, maxtrigger=1.0, desat=.6,
 113             intensity=1.0, size='medium')
 114         # default: (.3, .4, .3, 0), .6, 1, .6, 1, 'medium'
 115
 116     @staticmethod
 117     def pos2d(node):
 118         p3d = base.cam.get_relative_point(node.node, Point3(0, 0, 0))
 119         p2d = Point2()
 120         return p2d if base.camLens.project(p3d, p2d) else None
 121
 122     @staticmethod
 123     def screen_coord(pos):
 124         new_node = NodePath('temp')
 125         new_node.set_pos(pos)
 126         coord3d = new_node.get_pos(base.cam)
 127         new_node.remove_node()
 128         coord2d = Point2()
 129         base.camLens.project(coord3d, coord2d)
 130         coord_r2d = Point3(coord2d[0], 0, coord2d[1])
 131         coord_a2d = base.aspect2d.get_relative_point(render2d, coord_r2d)
 132         return coord_a2d[0], coord_a2d[2]
 133
 134     @staticmethod
 135     def world_from_to(pos):
 136         p_from, p_to = Point3(), Point3()    # in camera coordinates
 137         base.camLens.extrude(pos, p_from, p_to)
 138         p_from = render.get_relative_point(base.cam, p_from)  # global coords
 139         p_to = render.get_relative_point(base.cam, p_to)  # global coords
 140         return p_from, p_to
 141
 142     @property
 143     def shader_support(self):
 144         return base.win.get_gsg().get_supports_basic_shaders()
 145
 146     def screenshot(self, path=None):
 147         time = datetime.datetime.now().strftime('%y%m%d%H%M%S')
 148         #res = base.win.save_screenshot(Filename(path or ("yocto%s.png" % time)))
 149         #debug('screenshot %s (%s)' % (path or ("yocto%s.png" % time), res))
 150         res = base.screenshot(path or ("yocto%s.png" % time), False)
 151         info('screenshot %s (%s; %s)' % (path or ("yocto%s.png" % time), res, getcwd()))
 152
 153     @staticmethod
 154     def enable_shader(): render.set_shader_auto()
 155
 156     @staticmethod
 157     def disable_shader(): render.set_shader_off()
 158
 159     @staticmethod
 160     def print_stats(two_d=True, three_d=True, analyze=True, ls=True):
 161         '''Print graphics stats. They use standard output (from p3d).'''
 162         info = []
 163         if two_d and analyze:
 164             info +=[('render2d.analyze', base.render2d.analyze)]
 165         if three_d and analyze:
 166             info +=[('render.analyze', base.render.analyze)]
 167         if two_d and ls:
 168             info +=[('render2d.ls', base.render2d.ls)]
 169         if three_d and ls:
 170             info +=[('render.ls', base.render.ls)]
 171         for elm in info:
 172             print('\n\n#####\n%s()' % elm[0])
 173             elm[1]()
 174
 175
 176 class P3dNode:
 177
 178     def __init__(self, nodepath):
 179         self.nodepath = nodepath
 180         self.node.set_python_tag('libnode', self)
 181
 182     def set_collide_mask(self, mask): return self.node.set_collide_mask(mask)
 183     def set_x(self, val): return self.node.set_x(val)
 184     def set_y(self, val): return self.node.set_y(val)
 185     def set_z(self, val): return self.node.set_z(val)
 186     def set_hpr(self, val): return self.node.set_hpr(val)
 187     def set_h(self, val): return self.node.set_h(val)
 188     def set_p(self, val): return self.node.set_p(val)
 189     def set_r(self, val): return self.node.set_r(val)
 190     def set_scale(self, val): return self.node.set_scale(val)
 191     def set_transparency(self, val): return self.node.set_transparency(val)
 192     def set_alpha_scale(self, val): return self.node.set_alpha_scale(val)
 193     def set_texture(self, texturestage, texture):
 194         return self.node.set_texture(texturestage, texture)
 195     def has_tag(self, name): return self.node.has_tag(name)
 196     def get_tag(self, name): return self.node.get_tag(name)
 197     def get_python_tag(self, name): return self.node.get_python_tag(name)
 198     def remove_node(self): return self.node.remove_node()
 199     def flatten_strong(self): return self.node.flatten_strong()
 200     def clear_model_nodes(self): return self.node.clear_model_nodes()
 201     def show(self): return self.node.show()
 202     def set_depth_offset(self, val): return self.node.set_depth_offset(val)
 203     def loop(self, val): return self.node.loop(val)
 204     def cleanup(self): return self.node.cleanup()
 205     def write_bam_file(self, fname): return self.node.write_bam_file(fname)
 206
 207     def attach_node(self, name):
 208         return P3dNode(self.node.attach_new_node(name))
 209
 210     def add_shape(self, shape):
 211         return self.node.node().add_shape(shape._mesh_shape)
 212         #TODO: don't access a protected member
 213
 214     @property
 215     def name(self): return self.node.get_name()
 216
 217     @property
 218     def node(self): return self.nodepath
 219
 220     @property
 221     def p3dnode(self): return self.node.node()
 222
 223     def set_pos(self, pos): return self.node.set_pos(pos._vec)
 224         #TODO: don't access a protected member
 225
 226     def get_pos(self, other=None):
 227         return self.node.get_pos(* [] if other is None else [other.node])
 228
 229     @property
 230     def x(self): return self.node.get_x()
 231
 232     @property
 233     def y(self): return self.node.get_y()
 234
 235     @property
 236     def z(self): return self.node.get_z()
 237
 238     @property
 239     def hpr(self): return self.node.get_hpr()
 240
 241     @property
 242     def h(self): return self.node.get_h()
 243
 244     @property
 245     def p(self): return self.node.get_p()
 246
 247     @property
 248     def r(self): return self.node.get_r()
 249
 250     @property
 251     def scale(self): return self.node.get_scale()
 252
 253     @property
 254     def is_empty(self): return self.node.is_empty()
 255
 256     def get_relative_vector(self, node, vec):
 257         return self.node.get_relative_vector(node.node, vec)
 258
 259     def set_material(self, mat): return self.node.set_material(mat, 1)
 260
 261     def set_python_tag(self, name, val):
 262         return self.node.set_python_tag(name, val)
 263
 264     def get_distance(self, other_node):
 265         return self.node.get_distance(other_node.node)
 266
 267     def reparent_to(self, parent): return self.node.reparent_to(parent.node)
 268
 269     def wrt_reparent_to(self, parent):
 270         return self.node.wrt_reparent_to(parent.node)
 271
 272     @staticmethod
 273     def __get_pandanode(nodepath):
 274         if nodepath.has_python_tag('libnode'):
 275             return nodepath.get_python_tag('libnode')
 276         return P3dNode(nodepath)
 277
 278     def find_all_matches(self, name):
 279         nodes = self.node.find_all_matches(name)
 280         return [self.__get_pandanode(node) for node in nodes]
 281
 282     def find(self, name):
 283         model = self.node.find(name)
 284         if model: return self.__get_pandanode(model)
 285
 286     def optimize(self):
 287         self.node.prepare_scene(base.win.get_gsg())  # crash with texture.set_format
 288         self.node.premunge_scene(base.win.get_gsg())
 289
 290     def hide(self, mask=None):
 291         return self.node.hide(*[] if mask is None else [mask])
 292
 293     @property
 294     def tight_bounds(self): return self.node.get_tight_bounds()
 295
 296     @property
 297     def parent(self): return self.node.get_parent()
 298
 299     @property
 300     def children(self): return self.node.get_children()
 301
 302     def destroy(self): return self.node.remove_node()
 303
 304
 305 class P3dAnimNode:
 306
 307     def __init__(self, filepath, anim_dct):
 308         self.node = Actor(filepath, anim_dct)
 309
 310     def loop(self, val): return self.node.loop(val)
 311
 312     def reparent_to(self, node): self.node.reparent_to(node)
 313
 314     @property
 315     def name(self): return self.node.get_name()
 316
 317     def optimize(self):
 318         self.node.prepare_scene(base.win.get_gsg())
 319         self.node.premunge_scene(base.win.get_gsg())
 320
 321     def set_omni(self):
 322         self.node.node().set_bounds(OmniBoundingVolume())
 323         self.node.node().set_final(True)
 324
 325     def destroy(self): self.node.cleanup()
 326
 327
 328 class P3dAmbientLight:
 329
 330     def __init__(self, color):
 331         ambient_lgt = P3DAmbientLight('ambient light')
 332         ambient_lgt.set_color(color)
 333         self.ambient_np = render.attach_new_node(ambient_lgt)
 334         render.set_light(self.ambient_np)
 335
 336     def destroy(self):
 337         render.clear_light(self.ambient_np)
 338         self.ambient_np.remove_node()
 339
 340
 341 class P3dSpotlight:
 342
 343     def __init__(self, mask=None):
 344         self.spot_lgt = render.attach_new_node(P3DSpotlight('spot'))
 345         snode = self.spot_lgt.node()
 346         snode.set_scene(render)
 347         snode.set_shadow_caster(True, 1024, 1024)
 348         snode.get_lens().set_fov(40)
 349         snode.get_lens().set_near_far(20, 200)
 350         if mask: snode.set_camera_mask(mask)
 351         render.set_light(self.spot_lgt)
 352
 353     def set_pos(self, pos): return self.spot_lgt.set_pos(*pos)
 354
 355     def look_at(self, pos): return self.spot_lgt.look_at(*pos)
 356
 357     def set_color(self, color): return self.spot_lgt.set_color(*color)
 358
 359     def destroy(self):
 360         render.clear_light(self.spot_lgt)
 361         self.spot_lgt.remove_node()