DOI: 10.13140/RG.2.2.13317.19687 https://www.researchgate.net/publication/331802718_Blender_software_Vertex_Paint_Render_Tutorial_2_Examples_3D_Cube_3D_Castle_Wall

1. Blender software. Vertex Paint & Render.
Tutorial / 2 Examples: 3D Cube & 3D Castle Wall
Assoc. Prof. Dr. Eng. Tihomir Dovramadjiev
Technical University of Varna
MTF, Department Industrial Design
tihomir.dovramadjiev@tu-varna.bg
DOI: 10.13140/RG.2.2.13317.19687
https://www.researchgate.net/publication/331802718_Blender_software_Vertex_Paint_Render_Tutorial_2_Examples_3D_Cube_3D_Castle_Wall

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About Blender software
● Blender is the free and open source 3D creation suite. It supports the entirety of the 3D
pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion
tracking, even video editing and game creation.https://www.blender.org/
● Blender software. 2.79b Version. About, License & Development.
https://www.researchgate.net/publication/328677236_Blender_software_279b_Version_
About_License_Development
● Modern accessible application of the system Blender in 3D design practice.
https://www.researchgate.net/publication/312033613_Modern_accessible_application_of
_the_system_Blender_in_3D_design_practice

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Subdivide
Subdividing splits selected edges and faces by cutting them in half or more, adding new vertices, and subdividing
accordingly the faces involved. It adds resolution to the mesh by divide faces or edges into smaller units.
● This process follows a few rules, depending on the settings:
● When only one edge of a face is selected (Triangle mode), triangles are subdivided into two triangles, and quads, into three
triangles.
● When two edges of a face are selected:
- If the face is a triangle, a new edge is created between the two new vertices, subdividing the triangle in a triangle and a
quad.
- If the face is a quad, and the edges are neighbors, we have three possible behaviors, depending on the setting of Corner
Cut Type (the select menu next to the Subdivide button, in Mesh Tools panel). See below for details.
- If the face is a quad, and the edges are opposite, the quad is just subdivided in two quads by the edge linking the two new
vertices.
● When three edges of a face are selected:
- If the face is a triangle, this means the whole face is selected and it is then subdivided in four smaller triangles.
- If the face is a quad, first the two opposite edges are subdivided as described above. Then, the “middle” edge is
subdivided, affecting its new “sub-quad” as described above for only one edge.
● When four edges of a face (a quad) are selected, the face is subdivided into four smaller quads.
● https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/index.html
● https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/subdivide.html
CC-BY-SA 4.0 Int. License

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Vertex Paint
Introduction
● Vertex Painting is a simple way of painting color onto an object, by directly manipulating the color of
vertices, rather than textures, and is fairly straightforward.
● When a vertex is painted, the color of the vertex is modified according to the settings of the brush.
The color of all visible planes and edges attached to the vertex are then modified with a
gradient to the color of the other connected vertices. Note that the color of occluded faces is not
modified.
●
● Vertex colors can be painted by switching to Vertex Paint Mode; however, it will not show up in the
render unless you check Vertex Color Paint in the Materials Options panel (for Blender
Renderer). You can also the use Geometry Node to access vertex color information in the
material node tree.
● For Cycles materials, can be used Attribute Node
● https://docs.blender.org/manual/en/latest/sculpt_paint/painting/vertex_paint/
● https://docs.blender.org/manual/en/latest/sculpt_paint/painting/vertex_paint/introduction.html
CC-BY-SA 4.0 Int. License

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Vertex Paint
● https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/index.html
● https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/subdivide.html
CC-BY-SA 4.0 Int. License

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Example – 1 / Basic Cube
Default Interface

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Subdividing
https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/index.html

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Vertex Paint
https://docs.blender.org/manual/en/latest/sculpt_paint/painting/vertex_paint/

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Vertex Paint / Drawing (Painting)
Vertex Paint Mode. Drawing (Manually). Parameters: Default Cube; Brush: 5 px

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Vertex Paint / Drawing
Mixing colors

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Vertex Paint / Drawing
Mixing colors

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Rendered Image (Missed Drawing)
Blender Render

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Render Parameters / Activating
Vertex Color Paint
Object Mode

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Render / Material Parameters
Object Mode. Texture. Activating Vertex Color Paint (Material Panel)

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Result - 1

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Rendered Image

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Example 2 / Castle

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Pixabay / Castle – example
https://pixabay.com/bg/photos/стена-castle-tower-архитектура-3761204/

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Blender / Extras Add-on
Object Mode. Add > Mesh > Extras > Wall Factory

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Default 3D Wall Factory Model
3D Wall Factory Model

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Vertex Paint / Drawing (Painting)
Switching to Vertex Paint Mode and drawing (painting)

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Vertex Paint / Drawing
Mixing colors

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Vertex Paint / Drawing
Mixing colors

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Scene / Camera & Light
Active Camera parameters

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Rendered Image (Missed Drawing)
Blender Render

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Blender / Default Interface
Default Interface

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Result - 2

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Rendered Image
With activated “Vertex Color Paint” (Material Panel)

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Result - 3

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Rendered Image

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References
● Blender Software
https://www.blender.org/
● Tihomir Dovramadjiev PhD. Modern accessible application of the system Blender in 3D design practice.
https://www.researchgate.net/publication/312033613_Modern_accessible_application_of_the_system_Blender_in_3D_design_practice
Blender software. 2.79b Version. About, License & Development. DOI: 10.13140/RG.2.2.36167.75687
https://www.researchgate.net/publication/328677236_Blender_software_279b_Version_About_License_Development
● Blender User Manual.Release 2.78. Blender Community. Mar 08, 2017
● Subdividing
● https://docs.blender.org/manual/en/latest/modeling/meshes/editing/subdividing/index.html
● Vertex Paint
● https://docs.blender.org/manual/en/latest/sculpt_paint/painting/vertex_paint/
● CC-BY-SA 4.0 Int. License
● Pixabay. Free for commercial photos
https://pixabay.com/bg/photos/стена-castle-tower-архитектура-3761204/
● Apace OpenOffice
http://www.openoffice.org/download/