Color, Texture, Both?

[jrmrch.mobile]

Hello Support,

the attached .skp file contains a single face that looks colored in brown in SketchUp. According to the C API, its material type is SUMaterialType_Textured. But the image texture is almost white.

How to know that the material color should be taken into account ? How are the image texture and the color blended (if they are) ? What is the differece between SUMaterialType_Textured and SUMaterialType_ColorizedTexture ?

Thank you.

Jerome

[DanRathbun]

SketchUp uses OpenGL, so these other places might also be of help:

• OpenGL Wiki

• Khronos Forums - Khronos Standards community discussions

[jrmrch.mobile]

Dan,

I just want to know the difference between SUMaterialType_Textured and SUMaterialType_ColorizedTexture. They are defined in a SketchUp C API header file, not in GL.h.

According to the SketchUp C API documentation:

• SUMaterialType_Textured is a “Textured material”.
• SUMaterialType_ColorizedTexture is a “Colored and textured material”.

However it seems that even for a “SUMaterialType_Textured only” material, the material color is though taken into account.

So please, what is/are the true difference(s) between these two material types ?

[xqtyler]

I have the same problem. @tt_su Could you please help us on this question?

In the linker, there is a the same topic and no answers.

[DanRathbun]

A search of the developer categories on this subject:

• search: "colorize texture category:12"

… finds …

About colorized textures

SketchUp’s Ruby API bakes non-affine (quadrilateral) texture transformations and color modifications into the exported images. This is because many file formats and external applications might not support these features the same way as SketchUp does. There is unfortunately not much control over this. SketchUp supports two ways to adjust a material’s appearance, so-called colorize types: Colorization will turn all pixels monochrome in one single color tone with only variations in brightness. …

How does colorised texture work?

We should probably document this in a page in the documentation. Let start here in making the first attempt - let me know if you need more details. (EDIT: We now have documented it: GitHub - SketchUp/sketchup-colorize-algorithm: Explanation of SketchUp's colorization algorithm) SketchUp perform two types of color adjustments: If you set a material color for a textured material via the Ruby API’s Sketchup::Material.color= it sets the type to Sketchup::Material::COLORIZE_TINT. You can toggle…