def geom_node():
array = GeomVertexArrayFormat()
array.add_column("vertex", 3, Geom.NT_float32, Geom.C_point)
array.add_column("normal", 3, Geom.NT_float32, Geom.C_normal)
array.add_column("color", 3, Geom.NT_float32, Geom.C_color)
array.add_column("texcoord", 3, Geom.NT_float32, Geom.C_texcoord)
format = GeomVertexFormat()
format.add_array(array)
format = GeomVertexFormat.register_format(format)
vdata = GeomVertexData("test", format, Geom.UH_static)
vdata.set_num_rows(4)
vertex = GeomVertexWriter(vdata, 'vertex')
normal = GeomVertexWriter(vdata, 'normal')
color = GeomVertexWriter(vdata, 'color')
texcoord = GeomVertexWriter(vdata, 'texcoord')
vertex.add_data3f(1, 0, 0)
normal.add_data3f(0, 0, 1)
color.add_data4f(0, 0, 1, 1)
texcoord.add_data2f(1, 0)
vertex.add_data3f(1, 1, 0)
normal.add_data3f(0, 1, 1)
color.add_data4f(1, 0, 1, 1)
texcoord.add_data2f(1, 1)
geom = Geom(vdata)
node = GeomNode('gnode')
node.add_geom(geom)
return node
def gen_geom(self, mesh_json):
# Create vertex format
geom_array = GeomVertexArrayFormat()
geom_array.add_column("vertex", 3, Geom.NTFloat32, Geom.CPoint)
has_normals = False
has_texcoords = False
has_weights = False
if "normals" in mesh_json:
geom_array.add_column("normal", 3, Geom.NTFloat32, Geom.CNormal)
has_normals = True
if "texcoords" in mesh_json:
geom_array.add_column("texcoord", 3, Geom.NTFloat32,
Geom.CTexcoord)
has_texcoords = True
if "weights" in mesh_json:
geom_array.add_column("joint", 4, Geom.NTUint8, Geom.CIndex)
geom_array.add_column("weight", 4, Geom.NTFloat32, Geom.COther)
has_weights = True
geom_format = GeomVertexFormat()
geom_format.add_array(geom_array)
geom_format = GeomVertexFormat.register_format(geom_format)
# Set up vertex data
vdata = GeomVertexData(
str(random.randint(0, 255)) + "_vdata", geom_format, Geom.UHStatic)
vcount = len(mesh_json["vertices"]) // 3
vdata.setNumRows(vcount)
vertex = GeomVertexWriter(vdata, "vertex")
for i in range(vcount):
vertex.addData3(mesh_json["vertices"][3 * i],
mesh_json["vertices"][3 * i + 1],
mesh_json["vertices"][3 * i + 2])
if has_normals:
normal = GeomVertexWriter(vdata, "normal")
for i in range(vcount):
normal.addData3(mesh_json["normals"][3 * i],
mesh_json["normals"][3 * i + 1],
mesh_json["normals"][3 * i + 2])
if has_texcoords:
texcoord = GeomVertexWriter(vdata, "texcoord")
for i in range(vcount):
texcoord.addData2(mesh_json["texcoords"][2 * i],
mesh_json["texcoords"][2 * i + 1])
if has_weights:
joint = GeomVertexWriter(vdata, "joint")
weight = GeomVertexWriter(vdata, "weight")
for i in range(vcount):
joint_count = len(mesh_json["joints"][i])
joint.addData4(
0 if joint_count < 1 else mesh_json["joints"][i][0],
0 if joint_count < 2 else mesh_json["joints"][i][1],
0 if joint_count < 3 else mesh_json["joints"][i][2],
0 if joint_count < 4 else mesh_json["joints"][i][3])
weight.addData4(
0 if joint_count < 1 else mesh_json["weights"][i][0],
0 if joint_count < 2 else mesh_json["weights"][i][1],
0 if joint_count < 3 else mesh_json["weights"][i][2],
0 if joint_count < 4 else mesh_json["weights"][i][3])
# Create primitive
prim = GeomTriangles(Geom.UHStatic)
for i in range(vcount // 3):
prim.addVertices(3 * i, 3 * i + 1, 3 * i + 2)
geom = Geom(vdata)
geom.add_primitive(prim)
# Load texture
tex = None
if "texture" in mesh_json:
tex = Loader(EComponent.base).loadTexture(
(Path("resources") / mesh_json["texture"]).absolute())
tex.setMagfilter(SamplerState.FT_nearest)
tex.setMinfilter(SamplerState.FT_nearest)
# Create new geometry node
geom_node = GeomNode(str(random.randint(0, 255)) + "_node")
if tex is None:
geom_node.addGeom(geom)
else:
attrib = TextureAttrib.make(tex)
state = RenderState.make(attrib)
geom_node.addGeom(geom, state)
if EComponent.panda_root_node is not None:
self.geom_path = EComponent.panda_root_node.attach_new_node(
geom_node)
self.geom_path.set_shader_input("object_id", self.object_id)
# Set shader
if has_weights and self.geom_path is not None:
self.geom_path.setTag("shader type", "skinned")
bone_mats = PTA_LMatrix4f()
for _ in range(100):
bone_mats.push_back(helper.np_mat4_to_panda(np.identity(4)))
self.geom_path.set_shader_input(f"boneMats", bone_mats)
# Disable culling
self.geom_path.node().setBounds(OmniBoundingVolume())
self.geom_path.node().setFinal(True)
