def objshow(obj,
visual='color',
res=(512, 512),
ortho=False,
showball=False,
lightdir=[0.4, -1.5, 0.8]):
import taichi_three as t3
t3.reset()
scene = t3.Scene()
model = t3.Model.from_obj(obj)
scene.add_model(model)
if showball:
ball = t3.Model.from_obj(t3.readobj('assets/sphere.obj', scale=0.6))
scene.add_model(ball)
camera = t3.Camera(res=res)
if visual != 'color':
dim = 3
if visual == 'idepth':
dim = 0
if visual == 'texcoor':
dim = 2
camera.fb.add_buffer('normal', dim)
if ortho:
camera.type = camera.ORTHO
scene.add_camera(camera)
light = t3.Light(dir=lightdir)
scene.add_light(light)
gui = t3.GUI('Model', camera.res)
while gui.running:
gui.get_event(None)
gui.running = not gui.is_pressed(gui.ESCAPE)
camera.from_mouse(gui)
if showball:
ball.L2W.offset[None] = t3.Vector([1.75, -1.75, 0.0])
scene.render()
if visual == 'normal':
gui.set_image(camera.fb['normal'].to_numpy() * 0.5 + 0.5)
elif visual == 'color':
gui.set_image(camera.img)
else:
gui.set_image(camera.fb[visual].to_numpy())
gui.show()
def show(self, arguments: list = sys.argv[2:]):
"""Visualize an OBJ/NPZ model using Taichi THREE"""
parser = argparse.ArgumentParser(prog='t3 show',
description=f"{self.show.__doc__}")
parser.add_argument(
'filename',
help='File name of the OBJ/NPZ model to visualize, e.g. monkey.obj')
parser.add_argument('-s', '--scale', default=0.75,
type=float, help='Specify a scale parameter')
parser.add_argument('-u', '--resx', default=512,
type=int, help='Specify window width')
parser.add_argument('-v', '--resy', default=512,
type=int, help='Specify window height')
parser.add_argument('-A', '--ambient', default=0,
type=float, help='Specify ambient light strength')
parser.add_argument('-o', '--ortho',
action='store_true', help='Display in orthogonal mode')
parser.add_argument('-l', '--lowp',
action='store_true', help='Shade faces by interpolation')
parser.add_argument('-x', '--flipx',
action='store_true', help='Flip X axis of model when display')
parser.add_argument('-y', '--flipy',
action='store_true', help='Flip Y axis of model when display')
parser.add_argument('-z', '--flipz',
action='store_true', help='Flip Z axis of model when display')
parser.add_argument('-f', '--flipface',
action='store_true', help='Flip face culling direction')
parser.add_argument('-F', '--flipnorm',
action='store_true', help='Flip face normal direction')
parser.add_argument('-b', '--bothface',
action='store_true', help='Including both face, no culling')
parser.add_argument('-N', '--renorm',
action='store_true', help='Reset normal vectors to flat')
parser.add_argument('-S', '--showhints',
action='store_true', help='Show information about pixel under cursor')
parser.add_argument('-T', '--taa', default=True,
action='store_true', help='Enable temporal anti-aliasing')
parser.add_argument('-t', '--texture',
type=str, help='Path to texture to bind')
parser.add_argument('-n', '--normtex',
type=str, help='Path to normal map to bind')
parser.add_argument('-m', '--metallic',
type=str, help='Path to metallic map to bind')
parser.add_argument('-r', '--roughness',
type=str, help='Path to roughness map to bind')
parser.add_argument('-a', '--arch', default='cpu',
type=str, help='Backend to use for rendering')
args = parser.parse_args(arguments)
import taichi as ti
import taichi_three as t3
import numpy as np
ti.init(getattr(ti, args.arch))
scene = t3.Scene()
obj = t3.readobj(args.filename, scale=args.scale if args.scale != 0 else 1)
t3.objflipaxis(obj, args.flipx, args.flipy, args.flipz)
if args.scale == 0:
t3.objautoscale(obj)
if args.flipface:
t3.objflipface(obj)
if args.flipnorm:
t3.objflipnorm(obj)
if args.renorm:
t3.objmknorm(obj)
if args.bothface:
t3.objbothface(obj)
model = (t3.ModelLow if args.lowp else t3.Model).from_obj(obj)
if args.texture is not None:
model.add_texture('color', ti.imread(args.texture))
if args.normtex is not None:
model.add_texture('normal', ti.imread(args.normtex))
if args.metallic is not None:
model.add_texture('metallic', ti.imread(args.metallic))
if args.roughness is not None:
model.add_texture('roughness', ti.imread(args.roughness))
scene.add_model(model)
camera = t3.Camera(res=(args.resx, args.resy), taa=args.taa)
if args.showhints:
camera.fb.add_buffer('pos', 3)
camera.fb.add_buffer('texcoor', 2)
camera.fb.add_buffer('normal', 3)
if args.ortho:
camera.type = camera.ORTHO
scene.add_camera(camera)
if args.ambient:
light = t3.AmbientLight(args.ambient)
else:
light = t3.Light([0.4, -1.5, 0.8])
scene.add_light(light)
gui = ti.GUI('Model', camera.res)
while gui.running:
gui.get_event(None)
gui.running = not gui.is_pressed(ti.GUI.ESCAPE)
camera.from_mouse(gui)
scene.render()
gui.set_image(camera.img)
if args.showhints:
coor = gui.get_cursor_pos()
pos = camera.fb.fetchpixelinfo('pos', coor)
color = camera.fb.fetchpixelinfo('img', coor)
texcoor = camera.fb.fetchpixelinfo('texcoor', coor)
normal = camera.fb.fetchpixelinfo('normal', coor)
gui.text(f'color: [{color.x:.2f} {color.y:.2f} {color.z:.2f}]; pos: [{pos.x:+.2f} {pos.y:+.2f} {pos.z:+.2f}]', (0, 1))
gui.text(f'texcoor: [{texcoor.x:.2f} {texcoor.y:.2f}]; normal: [{normal.x:+.2f} {normal.y:+.2f} {normal.z:+.2f}]', (0, 1 - 16 / camera.res[1]))
gui.show()
import taichi as ti
import taichi_three as t3
import numpy as np
ti.init(ti.cpu)
scene = t3.Scene()
model = t3.Model(t3.readobj('assets/monkey.obj', scale=0.6))
#model = t3.Model(t3.readobj('assets/torus.obj', scale=0.6))
scene.add_model(model)
scene.set_light_dir([0.4, -1.5, -1.8])
gui = ti.GUI('Model', scene.res)
while gui.running:
gui.running = not gui.get_event(ti.GUI.ESCAPE)
#scene.camera.from_mouse(gui)
model.L2W.from_mouse(gui)
scene.render()
gui.set_image(scene.img)
gui.show()
import taichi as ti
import taichi_three as t3
import time, math
ti.init(ti.opengl)
n = 2
r = t3.Scene((640, 480))
pos = ti.Vector(3, ti.f32, n)
radius = ti.var(ti.f32, n)
r.add_ball(pos, radius)
r.opt.is_normal_map = True
gui = ti.GUI('Ball', r.res)
while gui.running:
gui.running = not gui.get_event(ti.GUI.ESCAPE)
radius[0] = math.sin(time.time()) * 0.25 + 0.5
radius[1] = math.cos(time.time() * 1.3) * 0.1 + 0.2
pos[1] = [0.5, 0.5, 0.0]
r.render()
gui.set_image(r.img)
gui.show()
import taichi as ti
import taichi_glsl as ts
import taichi_three as t3
from math import cos, sin, tan, pi, tau
from time import time
ti.init(ti.opengl)
N = 12
dt = 0.01
scene = t3.Scene((640, 640))
pos = ti.Vector(3, ti.f32, N)
vel = ti.Vector(3, ti.f32, N)
radius = ti.var(ti.f32, N)
bound = ti.Vector(3, ti.f32, ())
scene.add_ball(pos, radius)
scene.set_light_dir([1, 1, -1])
@ti.kernel
def init():
for i in pos:
pos[i] = ts.randNDRange(ts.vec3(-1), ts.vec3(1))
vel[i] = ts.randNDRange(ts.vec3(-1.1), ts.vec3(1.1))
radius[i] = ts.randRange(0.1, 0.2)
@ti.func
def interact(i, j):