<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body dir="auto">These are good questions, that arise me the same way. PointProperties are somehow inconsistent compared to the texture / color handling of Material and Texture.
<div dir="auto"><br></div><div dir="auto">Holger</div><div dir="auto"><br></div><div dir="auto"></div>
<div><br></div><div dir="auto" style="font-size:100%;color:#000000"><div>-------- Ursprüngliche Nachricht --------</div><div>Von: Andreas Plesch <andreasplesch@gmail.com> </div><div>Datum: 23.08.20 06:43 (GMT+01:00) </div><div>An: X3D Graphics public mailing list <x3d-public@web3d.org> </div><div>Betreff: [x3d-public] PointProperties revisited </div><div><br></div></div>https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-WD2/Part01/components/shape.html#PointProperties<br><br>has the current draft.<br><br>What is the motivation for having a colorMode field ? Should coloring<br>not be handled the same way as it is for other geometries, eg. use<br>color if no texture, use texture if no color, and blend if both are<br>provided ? Other geometries do not require a colorMode field after<br>all.<br><br>Even if there is an additional benefit of having the colorMode field, I think "<br>TEXTURE_AND_POINT_COLOR" should multiply rather than add:<br><br>"TEXTURE_AND_POINT_COLOR shall display the RGBA channels of a texture<br>added to the RGB channels of the color defined in X3DMaterialNode or<br>X3DColorNode node, and the A channel of the texture if any."<br><br>Adding introduces the problem of how to deal with oversaturated<br>components and contradicts how combining colors is defined for other<br>geometries.<br><br>Also, only RGBA textures are mentioned. Should one component (alpha),<br>2 component (greyscale plus alpha) and 3 component (RGB) textures also<br>be allowed or well defined ?<br><br>https://www.web3d.org/x3d/content/X3dTooltips.html#PointProperties.containerField<br><br>has a copy and paste typo. It still refers to "lineProperties"<br><br>-Andreas<br>-- <br>Andreas Plesch<br>Waltham, MA 02453<br><br>_______________________________________________<br>x3d-public mailing list<br>x3d-public@web3d.org<br>http://web3d.org/mailman/listinfo/x3d-public_web3d.org<br></body></html>