Tag Archives: 3D

Blender 3D – new text effect strip.

This new option is available from Blender 3D version 2.76 and let you to add a text effect strip into your video using Video Editing layout.
Select the Video Editing from Screen layout check box .
Next, you can add the text effect strip from Add – Effect Strip – Text, see the next image:

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Blender 3D – sin mesh object with python.

This is a simple example of create one object from vertrices and edges using sin function.
First you need to create the mesh with: bpy.data.meshes.new .
The n number is random, you can use any number for vertices and edges.
This number is points for the drawing sin function.
The spaces variable is the range from this points.
Using for statements we can draw the sin function.
The last step is to add all of this into one object named sin.
This object will be link to the scene.
See the source code of this tutorial:

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Unity 3D – Shaders scripts – part 001.

This is the first tutorial in a series of shaders tutorials in Unity 3D.
Open your Unity 3D project and using right click mouse add a Unlit shader to your project, see the image:

Rename your shader file and open this shader with right click mouse.
You will see the content of the default shader into your Visual Studio IDE.
Let’s see my shader example named NewUnlitShader :

When you write your first shader then you need to know some rules:

  • take a look at this link to see the most common variables and HLSL type and rules;
  • example: vec2 types with float2;
  • example: mat2 with float2x2;
  • example: vec3(1)  is float3(1,1,1);
  • example: mainImage(out vec4 fragColor, in vec2 fragCoord) is float4 mainImage(float2 fragCoord : SV_POSITION) : SV_Target;
  • example:
  • Shader “Unlit/NewUnlitShader” – the shader will add into your material from : Unlit – NewUnlitShader;
  • you can change the name NewUnlitShader , but you need to change the name of the file shader;
  • the body of shader start with word CGPROGRAM and end with word ENDCG;
  • Shader Level of Detail (LOD) is a number (see doc);
  • the Properties word is used for: inputs like a texture (see and _MainTex (“Texture”, 2D) = “white” {} );
  • the SubShader word is used to start define your settings for shader and the content of shader;
  • the words like: #pragma, #include , struct  are reserved words and is used to set and make the body of shader;
  • any shader come with : vertex shader body and fragment shader body;

One simple example of settings for vertex and fragment body shader but also you can have pixel shader body:

The next step is to add this to your shader:

Now, about vertex shader this can manipulate the attributes of vertices.
The fragment shader is the same as pixel shader.
The fragment/pixel shader is part of the rasterization steps.
You can see in my first example I used fragment shader not pixel shader:  #pragma fragment frag
The result is this function :

This is first part of this tutorials about shaders and you will need to learn all of this and make connections with my examples.

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Blender 3D – script to show python code under console.

To run this script yo need to select the render to Cycles Render.
Then go to Compositing from Screen layout ( in the top of the screen) and select Use Nodes from Material.
This will make a default material with a Diffuse BSDF .
The next step is to select Scripting from Screen layout.
This will allow you to make a script.
Create a new text and add this source code:

Press keys Alt+P or run the script from Text – Run Script.
When you click on tabs or select something the print function will print the python code into Console output area.
This can be used to see parts of python code from addons or Blender API.
Example with Archimesh addon :
You need to have this addon install and press the books button.
The result of this source code is show into console output and can be used with console shell to add books into your Scene:

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The Virtual Reality – part 001.

Briefly the acronym is recognized as VR and come with this comes with this definition:
Virtual reality is the term used to describe a three-dimensional, computer generated environment which can be explored and interacted with by a person. That person becomes part of this virtual world or is immersed within this environment and whilst there, is able to manipulate objects or perform a series of actions.
You can try getting steps with these links:

Stages are simple: a 3D content is put into a space called a scene and is presented in a special way for virtual reality devices.
Hope this help !

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