def render(self, cam, vertices, textures, faces=None, get_fim=False):
if faces is None:
bs = cam.shape[0]
faces = self.faces.repeat(bs, 1, 1)
# lighting is inplace operation
textures = textures.clone()
# lighting
faces_lighting = nr.vertices_to_faces(vertices, faces)
textures = nr.lighting(
faces_lighting,
textures,
self.light_intensity_ambient,
self.light_intensity_directional,
self.light_color_ambient,
self.light_color_directional,
self.light_direction)
# set offset_z for persp proj
proj_verts = self.proj_func(vertices, cam)
# flipping the y-axis here to make it align with the image coordinate system!
proj_verts[:, :, 1] *= -1
# calculate the look_at vertices.
vertices = nr.look_at(proj_verts, self.eye)
# rasterization
faces = nr.vertices_to_faces(vertices, faces)
images = nr.rasterize(faces, textures, self.image_size, self.anti_aliasing,
self.near, self.far, self.rasterizer_eps, self.background_color)
fim = None
if get_fim:
fim = nr.rasterize_face_index_map(faces, image_size=self.image_size, anti_aliasing=False,
near=self.near, far=self.far, eps=self.rasterizer_eps)
return images, fim
def render_fim(self, vertices, faces=None):
if faces is None:
bs = vertices.shape[0]
faces = self.faces.repeat(bs, 1, 1)
# calculate the look_at vertices.
vertices = nr.look_at(vertices, self.eye)
# rasterization
faces = nr.vertices_to_faces(vertices, faces)
fim = nr.rasterize_face_index_map(faces, self.image_size, False)
return fim
def render_fim(self, cam, vertices, faces=None):
if faces is None:
bs = cam.shape[0]
faces = self.faces.repeat(bs, 1, 1)
# set offset_z for persp proj
proj_verts = self.proj_func(vertices, cam)
# flipping the y-axis here to make it align with the image coordinate system!
proj_verts[:, :, 1] *= -1
# calculate the look_at vertices.
vertices = nr.look_at(proj_verts, self.eye)
# rasterization
faces = nr.vertices_to_faces(vertices, faces)
fim = nr.rasterize_face_index_map(faces, self.image_size, False)
return fim