学习# Blender# Python

Blender-Text Effects In Blender (1-6)

Blender 中的文字效果。学习自 Youtube 博主 5 Minutes Blender。

资源

课程

Linux 下安装 bpy

从 Releases · TylerGubala/blenderpy (github.com) 下载静态安装包，然后：

pip install bpy-2.91a0-cp37-cp37m-manylinux2014_x86_64.whl && bpy_post_install

Create Curved Text In Blender | Bend Any Text | Part 1 in Text Effects | Two Easy Methods Explained

创建文本对象

  1. 创建一个 Text 对象：
png
python
import bpy
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
  1. 将这个 Text 对象的 Rotation X 和 Z 设为 90°：
png
python
import numpy as np
 
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
  1. 将文字设为居中对齐：
png
python
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
  1. 将这个 Text 的 Geometry 的 Extrude 设为 0.1 m，使其具有厚度。
png
python
text_obj.data.extrude = 0.1
  1. 切换到 Edit Mode，可以更改其文字内容。
png
python
text_obj.data.body = "Hello,\nWorld!"

直接弯曲

  1. 给 Text 对象添加一个 Simple Deform 的 Modifier：
png
python
text_modifier = text_obj.modifiers.new(name="Bend", type="SIMPLE_DEFORM")
  1. 设置其属性：
png
python
text_modifier.deform_method = "BEND"
text_modifier.deform_axis = "Z"
text_modifier.angle = np.pi / 4

得到弯曲后的文本：

png

完整代码：

python
import bpy
import numpy as np
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
 
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
text_obj.data.extrude = 0.1
 
text_obj.data.body = "Hello,\nWorld!"
 
text_modifier = text_obj.modifiers.new(name="Bend", type="SIMPLE_DEFORM")
 
text_modifier.deform_method = "BEND"
text_modifier.deform_axis = "Z"
text_modifier.angle = np.pi / 4

沿 Bezier 曲线弯曲

  1. 新建一个 Circle 对象，将其 Rotation Z 设为 90°：
png
python
bpy.ops.curve.primitive_bezier_circle_add()
curve_obj = bpy.context.object
 
curve_obj.rotation_euler[2] = np.pi / 2
  1. 给 Text 对象添加一个 Modifier，选择 Curve，然后选择之前新建的 BezierCircle 对象：
png
python
curve_modifier = text_obj.modifiers.new(name="Curve", type="CURVE")
curve_modifier.object = curve_obj

此时 Text 对象就会沿着 BezierCircle 曲线变形：

png
  1. 选中 BezierCircle 对象，切换到 Edit Mode，选择 Segments → Switch Direction，便可切换文字方向：
png
python
bpy.ops.object.editmode_toggle()
bpy.ops.curve.switch_direction()
bpy.ops.object.editmode_toggle()
  1. 修改 BezierCircle 的 Scale，Text 对象也会随之变化：
png
python
curve_obj.delta_scale[0:3] = [2, 2, 2]

完整代码：

python
import bpy
import numpy as np
 
# 新建一个 TextCurve 对象
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
# 修改文本位置和旋转角度
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
 
# 修改文本对齐方式
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
# 挤出文本
text_obj.data.extrude = 0.1
 
# 设置文本内容
text_obj.data.body = "Hello,\nWorld!"
 
# 创建一个圆形对象
bpy.ops.curve.primitive_bezier_circle_add()
curve_obj = bpy.context.object
 
# 旋转该圆形对象
curve_obj.rotation_euler[2] = np.pi / 2
 
# 让文本沿着圆形变换
curve_modifier = text_obj.modifiers.new(name="Curve", type="CURVE")
curve_modifier.object = curve_obj
 
# 修改方向
bpy.ops.object.editmode_toggle()
bpy.ops.curve.switch_direction()
bpy.ops.object.editmode_toggle()
 
# 修改圆形大小
curve_obj.delta_scale[0:3] = [2, 2, 2]

Add Text To Any Curved Surface In Blender | Part 2 in Text Effects | Blender Eevee & Cycles

  1. 新建一个茶壶：
python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_teapot_add()
teapot_obj = bpy.context.object
  1. 新建一个文本对象，设置其对齐、位置（使其靠近茶壶表面）、旋转、挤出、文字内容、行间距等：
png png png
python
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
text_obj.location[1] = -2
text_obj.location[2] = 1.5
 
text_obj.rotation_euler[0] = np.pi / 2
 
text_obj.data.extrude = 0.1
 
text_obj.data.body = "Hello,\nWorld!"
 
text_obj.data.space_line = 0.75
  1. 给文字对象添加一个红色的材质，此时转到渲染窗口，文字就会呈现红色：
png
python
text_material = bpy.data.materials.new(name="TextMaterial")
text_material.use_nodes = True
nodes = text_material.node_tree.nodes
principled_bsdf = nodes.get("Principled BSDF")
if principled_bsdf is not None:
    principled_bsdf.inputs[0].default_value = (1, 0, 0, 1)
 
text_obj.data.materials.append(text_material)
  1. 新建一个 Empty 的 Cube，设置其位置使其和 Text 相同，设置其旋转角，用于控制 Text 的旋转：
png
python
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
empty_obj.location[1] = -2
empty_obj.location[2] = 1.5
 
empty_obj.rotation_euler[0] = np.pi / 2
empty_obj.rotation_euler[2] = np.pi / 2
  1. 给 Text 对象添加 modifier：
  • Remesh：用于使字体集合与弯曲操作兼容，选择 Sharp，Octree Depth 设为 8：
png
python
text_modifier_remesh = text_obj.modifiers.new(name="Remesh", type="REMESH")
text_modifier_remesh.mode = "SHARP"
text_modifier_remesh.octree_depth = 8
text_modifier_remesh.use_remove_disconnected = False
  • SimpleDeform：用于字体弯曲，选择 Bend，Origin 选择 Empty 对象，Axis 选择 Y 轴：
png
python
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.deform_axis = "Y"
  • Shrinkwrap：使得文字映射到 teapot 上，Wrap Method 选择 Target Normal Project，Target 选择 Teapot 对象，Offset 选择 0.1 m：
png
python
text_modifier_shrink_wrap = text_obj.modifiers.new(name="Shrinkwrap", type="SHRINKWRAP")
text_modifier_shrink_wrap.wrap_method = "TARGET_PROJECT"
text_modifier_shrink_wrap.target = teapot_obj
text_modifier_shrink_wrap.offset = 0.1
png

完整代码：

python
import bpy
import numpy as np
 
# 新建 teapot 对象
bpy.ops.mesh.primitive_teapot_add()
teapot_obj = bpy.context.object
 
# 新建 text 对象
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
# 居中对齐
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
# 设置位置
text_obj.location[1] = -2
text_obj.location[2] = 1.5
 
# 设置旋转角
text_obj.rotation_euler[0] = np.pi / 2
 
# 设置挤出举例
text_obj.data.extrude = 0.1
 
# 设置文本内容
text_obj.data.body = "Hello,\nWorld!"
 
# 设置行间距
text_obj.data.small_caps_scale = 0.75
 
# 新建材质
text_material = bpy.data.materials.new(name="TextMaterial")
text_material.use_nodes = True
nodes = text_material.node_tree.nodes
principled_bsdf = nodes.get("Principled BSDF")
if principled_bsdf is not None:
    principled_bsdf.inputs[0].default_value = (1, 0, 0, 1)
 
# 给文本添加材质
text_obj.data.materials.append(text_material)
 
# 新建 empty 对象
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
# 设置 empty 位置
empty_obj.location[1] = -2
empty_obj.location[2] = 1.5
 
# 设置 empty 旋转角
empty_obj.rotation_euler[0] = np.pi / 2
empty_obj.rotation_euler[2] = np.pi / 2
 
# 新建 Remesh 的 modifier
text_modifier_remesh = text_obj.modifiers.new(name="Remesh", type="REMESH")
text_modifier_remesh.mode = "SHARP"
text_modifier_remesh.octree_depth = 8
text_modifier_remesh.use_remove_disconnected = False
 
# 新建 SimpleDeform 的 modifier
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.deform_axis = "Y"
 
# 新建 Shrinkwrap 的 modifier
text_modifier_shrink_wrap = text_obj.modifiers.new(name="Shrinkwrap", type="SHRINKWRAP")
text_modifier_shrink_wrap.wrap_method = "TARGET_PROJECT"
text_modifier_shrink_wrap.target = teapot_obj
text_modifier_shrink_wrap.offset = 0.1

Engrave & Emboss Text Easily In Blender | Part 3 in Text Effects | Create 3D Text Logo In Blender

  1. 新建一个 Cube，并调整其 Scale：
png
python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cube_add()
cube_obj = bpy.context.object
 
cube_obj.scale[0] = 1.5
cube_obj.scale[1] = 2.5
  1. 新建一个 Text，调整其 Transform：
png
python
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[2] = 1.15
text_obj.rotation_euler[2] = np.pi / 2

使其居中对齐：

png
python
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[2] = 1.15
text_obj.rotation_euler[2] = np.pi / 2

设置文字内容：

png
python
text_obj.data.body = "Hello,\nWorld!"
  1. 修改完文字内容后，将其转换成 Mesh，随后文字内容就不能再改变！
png
python
bpy.ops.object.convert(target="MESH")
  1. 应用 Decimate 以减少过多的顶点：
png
python
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
  1. Edit Mode 下，选择 Text 对象下的所有顶点，Mesh → Merge → By Distance：
png

在对话框中选择 0.01 m。

png
python
bpy.ops.object.editmode_toggle()
bpy.ops.mesh.select_all(action="SELECT")
bpy.ops.mesh.remove_doubles(threshold=0.01)
  1. Mesh → Delete → Limited Dissolve：
png

在对话框中选择 Max Angle：10°：

png
python
bpy.ops.mesh.dissolve_limited(angle_limit=np.pi / 18)
bpy.ops.object.editmode_toggle()
  1. 给 Text 添加一个 Solidfy，使其具有高度：
png
python
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.2
  1. Object Mode 下，给 Text 和 Cude 使用 Shade Smooth：
png png png
python
bpy.ops.object.shade_smooth()
 
text_obj.data.use_auto_smooth = True
 
cube_obj.data.use_auto_smooth = True
  1. 给 Cude 添加 Boolean，关闭 Text 的显示，形成雕刻效果：
png
python
cube_modifier_boolean = cube_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cube_modifier_boolean.object = text_obj
  1. 给 Cude 添加 Bevel，形成斜角效果：
png
python
cube_modifier_bevel = cube_obj.modifiers.new(name="Bevel", type="BEVEL")
cube_modifier_bevel.width = 0.005
cube_modifier_bevel.segments = 5
cube_modifier_bevel.use_clamp_overlap = False
cube_modifier_bevel.harden_normals = True
  1. 将 Boolean 改为 Union，形成浮雕效果：
png
python
cube_modifier_boolean.operation = "UNION"

emmmm 如果破了的话好像只能手动处理了。

png

完整代码：

python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cube_add()
cube_obj = bpy.context.object
 
cube_obj.scale[0] = 1.5
cube_obj.scale[1] = 2.5
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[2] = 1.15
text_obj.rotation_euler[2] = np.pi / 2
 
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
text_obj.data.body = "Hello,\nWorld!"
 
bpy.ops.object.convert(target="MESH")
 
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
 
bpy.ops.object.editmode_toggle()
bpy.ops.mesh.select_all(action="SELECT")
bpy.ops.mesh.remove_doubles(threshold=0.01)
 
bpy.ops.mesh.dissolve_limited(angle_limit=np.pi / 18)
bpy.ops.object.editmode_toggle()
 
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.2
 
bpy.ops.object.shade_smooth()
 
text_obj.data.use_auto_smooth = True
 
cube_obj.data.use_auto_smooth = True
 
cube_modifier_boolean = cube_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cube_modifier_boolean.object = text_obj
 
text_obj.hide_viewport = True
text_obj.hide_render = True
 
cube_modifier_bevel = cube_obj.modifiers.new(name="Bevel", type="BEVEL")
cube_modifier_bevel.width = 0.005
cube_modifier_bevel.segments = 5
cube_modifier_bevel.use_clamp_overlap = False
cube_modifier_bevel.harden_normals = True
 
cube_modifier_boolean.operation = "UNION"

Engrave or Carve Text On Curved Surface | Part 4 in Text Effects | Blender Eevee & Cycles

  1. 新建一个圆柱体：
png
python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cylinder_add()
cylinder_obj = bpy.context.object
png
python
cylinder_obj.scale[0:3] = [1.2, 1.2, 1.2]
png
python
cylinder_modifier_edgesplit = cylinder_obj.modifiers.new(name="EdgeSplit", type="EDGE_SPLIT")
bpy.ops.object.modifier_apply(modifier="EdgeSplit")
png
python
cylinder_modifier_subsurf = cylinder_obj.modifiers.new(name="Subdivision", type="SUBSURF")
cylinder_modifier_subsurf.levels = 2
bpy.ops.object.modifier_apply(modifier="Subdivision")
  1. 新建一个文本对象：
png
python
text_obj.location[0] = 1.22
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
png
python
text_obj.data.font = bpy.data.fonts.load("C:\\windows\\Fonts\\seguiemj.ttf")
text_obj.data.body = "I❤\nYOU"
python
text_obj.data.size = 0.9
text_obj.data.space_line = 0.75
png
python
bpy.ops.object.convert(target="MESH")
png
python
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
png
python
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.2
png png
python
bpy.ops.object.shade_smooth()
text_obj.data.use_auto_smooth = True
png
python
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
empty_obj.location[0:3] = text_obj.location[0:3]
empty_obj.rotation_euler[0] = np.pi / 2
png
python
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.angle = - np.pi / 4
text_modifier_simple_deform.deform_axis = "Y"
png
python
cylinder_modifier_boolean = cylinder_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cylinder_modifier_boolean.object = text_obj
 
text_obj.hide_viewport = True
text_obj.hide_render = True
png
python
cylinder_material = bpy.data.materials.new(name="Material")
cylinder_material.use_nodes = True
nodes = cylinder_material.node_tree.nodes
principled_bsdf = nodes.get("Principled BSDF")
if principled_bsdf is not None:
    principled_bsdf.inputs[0].default_value = (1, 0.7, 0, 1)
 
cylinder_obj.data.materials.append(cylinder_material)

完整代码：

python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cylinder_add()
cylinder_obj = bpy.context.object
 
cylinder_obj.scale[0:3] = [1.2, 1.2, 1.2]
 
cylinder_modifier_edgesplit = cylinder_obj.modifiers.new(name="EdgeSplit", type="EDGE_SPLIT")
bpy.ops.object.modifier_apply(modifier="EdgeSplit")
 
cylinder_modifier_subsurf = cylinder_obj.modifiers.new(name="Subdivision", type="SUBSURF")
cylinder_modifier_subsurf.levels = 2
bpy.ops.object.modifier_apply(modifier="Subdivision")
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[0] = 1.22
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
text_obj.data.font = bpy.data.fonts.load("C:\\windows\\Fonts\\seguiemj.ttf")
text_obj.data.body = "I❤\nYOU"
 
text_obj.data.size = 0.9
text_obj.data.space_line = 0.75
 
bpy.ops.object.convert(target="MESH")
 
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
 
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.2
 
 
bpy.ops.object.shade_smooth()
text_obj.data.use_auto_smooth = True
 
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
empty_obj.location[0:3] = text_obj.location[0:3]
empty_obj.rotation_euler[0] = np.pi / 2
 
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.angle = - np.pi / 4
text_modifier_simple_deform.deform_axis = "Y"
 
cylinder_modifier_boolean = cylinder_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cylinder_modifier_boolean.object = text_obj
 
text_obj.hide_viewport = True
text_obj.hide_render = True
 
cylinder_material = bpy.data.materials.new(name="Material")
cylinder_material.use_nodes = True
nodes = cylinder_material.node_tree.nodes
principled_bsdf = nodes.get("Principled BSDF")
if principled_bsdf is not None:
    principled_bsdf.inputs[0].default_value = (1, 0.7, 0, 1)
 
cylinder_obj.data.materials.append(cylinder_material)

Emboss Any Text On Curved Surface | Bend Any Text | Part 5 in Text Effects | Blender Eevee & Cycles

  1. 新建一个圆柱体。
png
python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cylinder_add()
cylinder_obj = bpy.context.object
  1. 添加 Edgesplit，并应用，分离边：
png
python
cylinder_modifier_edgesplit = cylinder_obj.modifiers.new(name="EdgeSplit", type="EDGE_SPLIT")
bpy.ops.object.modifier_apply(modifier="EdgeSplit")
  1. 添加 Subdivision，并应用，使得物体更平滑：
png
python
cylinder_modifier_subsurf = cylinder_obj.modifiers.new(name="Subdivision", type="SUBSURF")
cylinder_modifier_subsurf.levels = 2
bpy.ops.object.modifier_apply(modifier="Subdivision")
  1. 新建一个 Text，调整其参数：
png
python
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[0] = 1.1
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2

设置文字内容：

png
python
text_obj.data.body = "Hello,\nWorld!"
png
python
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
png
python
text_obj.data.size = 0.5
  1. 添加一个 Solidify 修改器，挤出 0.15 m：
png
python
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.15
  1. 将 Text 转成 Mesh：
png
python
bpy.ops.object.convert(target="MESH")
  1. Remesh 处理：
png
python
text_modifier_remesh = text_obj.modifiers.new(name="Remesh", type="REMESH")
text_modifier_remesh.mode = "SHARP"
text_modifier_remesh.octree_depth = 8
text_modifier_remesh.use_remove_disconnected = False
  1. Decimate处理以减少边的数量：
png
python
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
  1. 平滑处理：
png png png
python
bpy.ops.object.shade_smooth()
 
text_obj.data.use_auto_smooth = True
 
cylinder_obj.data.use_auto_smooth = True
  1. 新建一个 Empty，位置和 Text 相同，用于文本弯曲：
png
python
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
empty_obj.location[0:3] = text_obj.location[0:3]
empty_obj.rotation_euler[0] = np.pi / 2
  1. 设置 SimpleDeform，使 Text 弯曲：
png
python
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.angle = - np.pi / 2
text_modifier_simple_deform.deform_axis = "Y"
  1. 形成浮雕有一个简单的方法：Object → Join：
png
  1. 如果不用 Join，改用 Boolean 运算：
png
python
cylinder_modifier_boolean = cylinder_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cylinder_modifier_boolean.operation = "UNION"
cylinder_modifier_boolean.object = text_obj
  1. 添加 Bevel 使得斜角效果：
png
python
cylinder_modifier_bevel = cylinder_obj.modifiers.new(name="Bevel", type="BEVEL")
cylinder_modifier_bevel.width = 0.005
cylinder_modifier_bevel.segments = 5
cylinder_modifier_bevel.use_clamp_overlap = False
cylinder_modifier_bevel.harden_normals = True
python
text_obj.hide_viewport = True
text_obj.hide_render = True
  1. 如果有破，只能自己拿工具填边了：
png

完整代码：

python
import bpy
import numpy as np
 
bpy.ops.mesh.primitive_cylinder_add()
cylinder_obj = bpy.context.object
 
cylinder_modifier_edgesplit = cylinder_obj.modifiers.new(name="EdgeSplit", type="EDGE_SPLIT")
bpy.ops.object.modifier_apply(modifier="EdgeSplit")
 
cylinder_modifier_subsurf = cylinder_obj.modifiers.new(name="Subdivision", type="SUBSURF")
cylinder_modifier_subsurf.levels = 2
bpy.ops.object.modifier_apply(modifier="Subdivision")
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.location[0] = 1.1
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
 
text_obj.data.body = "Hello,\nWorld!"
 
text_obj.data.size = 0.5
 
text_modifier_solidify = text_obj.modifiers.new(name="Solidify", type="SOLIDIFY")
text_modifier_solidify.thickness = 0.15
 
bpy.ops.object.convert(target="MESH")
 
text_modifier_remesh = text_obj.modifiers.new(name="Remesh", type="REMESH")
text_modifier_remesh.mode = "SHARP"
text_modifier_remesh.octree_depth = 8
text_modifier_remesh.use_remove_disconnected = False
 
text_modifier_decimate = text_obj.modifiers.new(name="Decimate", type="DECIMATE")
text_modifier_decimate.decimate_type = "DISSOLVE"
bpy.ops.object.modifier_apply(modifier="Decimate")
 
bpy.ops.object.shade_smooth()
 
text_obj.data.use_auto_smooth = True
 
cylinder_obj.data.use_auto_smooth = True
 
bpy.ops.object.empty_add(type="CUBE")
empty_obj = bpy.context.object
 
empty_obj.location[0:3] = text_obj.location[0:3]
empty_obj.rotation_euler[0] = np.pi / 2
 
text_modifier_simple_deform = text_obj.modifiers.new(name="SimpleDeform", type="SIMPLE_DEFORM")
text_modifier_simple_deform.deform_method = "BEND"
text_modifier_simple_deform.origin = empty_obj
text_modifier_simple_deform.angle = - np.pi / 2
text_modifier_simple_deform.deform_axis = "Y"
 
cylinder_modifier_boolean = cylinder_obj.modifiers.new(name="Boolean", type="BOOLEAN")
cylinder_modifier_boolean.operation = "UNION"
cylinder_modifier_boolean.object = text_obj
 
cylinder_modifier_bevel = cylinder_obj.modifiers.new(name="Bevel", type="BEVEL")
cylinder_modifier_bevel.width = 0.005
cylinder_modifier_bevel.segments = 5
cylinder_modifier_bevel.use_clamp_overlap = False
cylinder_modifier_bevel.harden_normals = True
 
text_obj.hide_viewport = True
text_obj.hide_render = True

Neon Light or Neon Sign In Blender | Easy & Realistic Method For Blender Eevee (All Versions)

  1. 新建一个 Text 对象，调整其参数：
png png
python
import bpy
import numpy as np
import os
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
text_obj.data.space_line = 1.2
  1. 修改文字：
png
python
text_obj.data.body = "BARBEQUE\nNATION"
  1. 从 Neon Future Font | dafont.com 找一个适合霓虹灯的字体，应用之：
png
python
font_path = os.path.abspath(os.path.join(os.path.abspath(os.path.dirname(bpy.data.filepath))
                                                                      , './fonts/Neon_Future.ttf'))
text_obj.data.font = bpy.data.fonts.load(font_path)
  1. 设置 extrude：
png
python
text_obj.data.extrude = 0.02
  1. 添加一个 emission 的材质，设置参数：
png
python
text_material = bpy.data.materials.new(name="Emission")
text_material.use_nodes = True
nodes = text_material.node_tree.nodes
 
for node in nodes:
    nodes.remove(node)
 
emission_node = nodes.new(type='ShaderNodeEmission')
emission_node.inputs[0].default_value = (0.25, 1, 0.325, 1)
emission_node.inputs[1].default_value = 4
 
output_node = nodes.new(type='ShaderNodeOutputMaterial')
links = text_material.node_tree.links
links.new(emission_node.outputs[0], output_node.inputs[0])
 
text_obj.data.materials.append(text_material)
  1. 设置 scene 里的 Bloom：
png
python
bpy.context.scene.eevee.use_bloom = True
bpy.context.scene.eevee.bloom_radius = 3
bpy.context.scene.eevee.bloom_color = (0.25, 1, 0.325)
bpy.context.scene.eevee.bloom_intensity = 0.25
  1. 新建一个 plane，用于接受霓虹灯的光线：
png
python
bpy.ops.mesh.primitive_plane_add()
plane_obj = bpy.context.object
plane_obj.rotation_euler[1] = np.pi / 2
plane_obj.scale[0] = 2.5
plane_obj.scale[1] = 3.5
plane_obj.location[0] = -0.25
  1. 从网上找一张贴图，给这个 plane 一个贴图的纹理：
png
python
plane_material = bpy.data.materials.new(name="Wall")
plane_material.use_nodes = True
nodes = plane_material.node_tree.nodes
 
image_texture_node = nodes.new(type='ShaderNodeTexImage')
image_texture_node.image = bpy.data.images.load(os.path.abspath(os.path.join(os.path.abspath(os.path.dirname(bpy.data.filepath))
                                                                      , './texture/Wall.jpg')))
  1. 调整其 shader nodes，翻转贴图：
png png
python
mapping_node = nodes.new(type='ShaderNodeMapping')
mapping_node.inputs[2].default_value[2] = np.pi / 2
 
texcoord_node = nodes.new(type="ShaderNodeTexCoord")
 
links = plane_material.node_tree.links
links.new(texcoord_node.outputs[0], mapping_node.inputs[0])
links.new(mapping_node.outputs[0], image_texture_node.inputs[0])
links.new(image_texture_node.outputs[0], nodes["Principled BSDF"].inputs[0])
 
plane_obj.data.materials.append(plane_material)
  1. 添加环境光探针，大小包围平面和文字：
png
python
bpy.ops.object.lightprobe_add(type="GRID")
  1. 将 Light Probe 的大小包围屏幕和文字：
png
python
lightprobe_obj = bpy.context.object
lightprobe_obj.scale[0:3] = [1, 3.5, 2]
  1. Bake Cubemap Only：
png
  1. 调低背景亮度，Screen Space Reflections：
png
python
bpy.data.worlds["World"].node_tree.nodes["Background"].inputs[1].default_value = 0
bpy.context.scene.eevee.use_ssr = True
  1. 添加点光源，补充亮度：
png png
python
light_obj_list = []
for i in range(8):
    bpy.ops.object.light_add(type="POINT")
    light_obj_list.append(bpy.context.object)
    light_obj_list[-1].data.color = (0.25, 1, 0.325)
    if i < 5:
        light_obj_list[-1].location[1] = -2 + i
        light_obj_list[-1].location[2] = 0.5
    else:
        light_obj_list[-1].location[1] = -6 + i
        light_obj_list[-1].location[2] = -0.5

完整代码：

python
import bpy
import numpy as np
import os
 
bpy.ops.object.text_add()
text_obj = bpy.context.object
 
text_obj.rotation_euler[0] = np.pi / 2
text_obj.rotation_euler[2] = np.pi / 2
text_obj.data.align_x = "CENTER"
text_obj.data.align_y = "CENTER"
text_obj.data.space_line = 1.2
 
text_obj.data.extrude = 0.02
 
text_obj.data.body = "BARBEQUE\nNATION"
font_path = os.path.abspath(os.path.join(os.path.abspath(os.path.dirname(bpy.data.filepath))
                                                                      , './fonts/Neon_Future.ttf'))
text_obj.data.font = bpy.data.fonts.load(font_path)
 
text_material = bpy.data.materials.new(name="Emission")
text_material.use_nodes = True
nodes = text_material.node_tree.nodes
 
for node in nodes:
    nodes.remove(node)
 
emission_node = nodes.new(type='ShaderNodeEmission')
emission_node.inputs[0].default_value = (0.25, 1, 0.325, 1)
emission_node.inputs[1].default_value = 4
 
output_node = nodes.new(type='ShaderNodeOutputMaterial')
links = text_material.node_tree.links
links.new(emission_node.outputs[0], output_node.inputs[0])
 
text_obj.data.materials.append(text_material)
 
bpy.context.scene.eevee.use_bloom = True
bpy.context.scene.eevee.bloom_radius = 3
bpy.context.scene.eevee.bloom_color = (0.25, 1, 0.325)
bpy.context.scene.eevee.bloom_intensity = 0.25
 
bpy.ops.mesh.primitive_plane_add()
plane_obj = bpy.context.object
plane_obj.rotation_euler[1] = np.pi / 2
plane_obj.scale[0] = 2.5
plane_obj.scale[1] = 3.5
plane_obj.location[0] = -0.25
 
plane_material = bpy.data.materials.new(name="Wall")
plane_material.use_nodes = True
nodes = plane_material.node_tree.nodes
 
image_texture_node = nodes.new(type='ShaderNodeTexImage')
image_texture_node.image = bpy.data.images.load(os.path.abspath(os.path.join(os.path.abspath(os.path.dirname(bpy.data.filepath))
                                                                      , './texture/Wall.jpg')))
                                                                      
mapping_node = nodes.new(type='ShaderNodeMapping')
mapping_node.inputs[2].default_value[2] = np.pi / 2
 
texcoord_node = nodes.new(type="ShaderNodeTexCoord")
 
links = plane_material.node_tree.links
links.new(texcoord_node.outputs[0], mapping_node.inputs[0])
links.new(mapping_node.outputs[0], image_texture_node.inputs[0])
links.new(image_texture_node.outputs[0], nodes["Principled BSDF"].inputs[0])
 
plane_obj.data.materials.append(plane_material)
 
bpy.ops.object.lightprobe_add(type="GRID")
lightprobe_obj = bpy.context.object
lightprobe_obj.scale[0:3] = [1, 3.5, 2]
 
bpy.data.worlds["World"].node_tree.nodes["Background"].inputs[1].default_value = 0
bpy.context.scene.eevee.use_ssr = True
 
light_obj_list = []
for i in range(8):
    bpy.ops.object.light_add(type="POINT")
    light_obj_list.append(bpy.context.object)
    light_obj_list[-1].data.color = (0.25, 1, 0.325)
    if i < 5:
        light_obj_list[-1].location[1] = -2 + i
        light_obj_list[-1].location[2] = 0.5
    else:
        light_obj_list[-1].location[1] = -6 + i
        light_obj_list[-1].location[2] = -0.5