Why is the UV obtained through ACAPI_ModelAccess_GetTextureCoord API different from ArchiCAD?

[sxs]

Hi,everyone:

 In ArchiCad:

In my Render System：

It is obvious that the size of the texture is inconsistent（Ignore color）.

I'm pretty sure the exported texture file is fine, so I think it's a UV issue.

					//texture
					API_TexCoordPars	pars = { 0 };
					pars.elemIdx = elemIdx;
					pars.bodyIdx = bodyIdx;
					pars.pgonIndex = j;
					//
					pars.surfacePoint.x = backCo.x;
					pars.surfacePoint.y = backCo.y;
					pars.surfacePoint.z = backCo.z;
					err = ACAPI_ModelAccess_GetTextureCoord(&pars, &resultUV);
					if (err == NoError)
						uv.push_back({ resultUV.u, resultUV.v });

[sxs · Accepted solution]

if (err == NoError)
						uv.push_back({ resultUV.u / xSize, resultUV.v / ySize });

It seems that the following actions need to be taken.But the xSize/ySize I get can not produce the correct effect.

[sxs]

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@sxs wrote:

if (err == NoError)
						uv.push_back({ resultUV.u / xSize, resultUV.v / ySize });

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It can work.

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@sxs wrote:

It seems that the following actions need to be taken.But the xSize/ySize I get can not produce the correct effect.

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The reason is that the texture is missing.