If Scaf parametrize changes the amount of vertex and faces is possible to use it to switch 3d -> 2d?

[FrankEscobar]

I mean using something as simple as

ScafData scaf_data;
scaf_data.add_new_patch(V, F, Eigen::RowVector2d(0, 0));
scaf_data.mesh_improve(false, true);
cout << "V_init: " << V.rows() << " F_init: " << V.rows() << endl;
cout << "V_num: " << scaf_data.v_num << " F_num: " << scaf_data.f_num << endl;

I get that the V and F num has been changed so it cannot be used to parametrice 3d spaces into 2d spaces or am I wrong?

Regards.

[jiangzhongshi]

Hi, Only the top mv_num are real vertices, others are virtual ones used for enforcing bijectivity

On Wed, May 15, 2019 at 4:29 AM FrankEscobar ***@***.***> wrote: I mean using something as simple as ScafData scaf_data; scaf_data.add_new_patch(V, F, Eigen::RowVector2d(0, 0)); scaf_data.mesh_improve(false, true); cout << "V_init: " << V.rows() << " F_init: " << V.rows() << endl; cout << "V_num: " << scaf_data.v_num << " F_num: " << scaf_data.f_num << endl; I get that the V and F num has been changed so it cannot be used to parametrice 3d spaces into 2d spaces or am I wrong? Regards. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_jiangzhongshi_Scaffold-2DMap_issues_10-3Femail-5Fsource-3Dnotifications-26email-5Ftoken-3DADBLCF67UZZUOBZYTOEXDL3PVPCV7A5CNFSM4HNA4CBKYY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4GT3RHTA&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=6T50pXLTqEuucMdjRpYgtz82xOxQOck16GAB6bQijtA&s=VLgD4yCoi5tY9_uoqyf28xm947PbecT37kqy3wYzvBM&e=>, or mute the thread <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_notifications_unsubscribe-2Dauth_ADBLCF2YS7U3N5ZDGLSCZULPVPCV7ANCNFSM4HNA4CBA&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=6T50pXLTqEuucMdjRpYgtz82xOxQOck16GAB6bQijtA&s=0_sYgNkBKxA2TjJLv4dMB5NfHoynTP82Ax4I2Qf-zs0&e=> .

-- Best, Zhongshi Jiang New York University

[FrankEscobar]

Mmm then how should I proceed to generate uvs from that mesh if I only can access to the virtual ones?

Btw is this implementation diffent from the Libigl examples one?

Thank you for your time

[jiangzhongshi]

If you want to retrieve the UV from this point, you can simply get
data.w_uv.topRows(data.mv_num)
and the input F

[FrankEscobar]

Thank you! there is any advantage on using this instead the example providen in LibIGL?

[jiangzhongshi]

Hi Frank, I was adapting the code here into libigl, so much of the source code are the same. However, for simplicity, I didn’t include multi-patch texture and things in 3D, and of course code related to UI. Best, Zhongshi

…

On Sat, May 18, 2019 at 6:37 AM FrankEscobar ***@***.***> wrote: Thank you! there is any advantage on using this instead the example providen in LibIGL? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_jiangzhongshi_Scaffold-2DMap_issues_10-3Femail-5Fsource-3Dnotifications-26email-5Ftoken-3DADBLCFYUC5ALSTDMPCTGYFDPV7L4FA5CNFSM4HNA4CBKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODVWMD7A-23issuecomment-2D493666812&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=B77az0IRwuYDu9-shefXAEBK_6ZqnwZ2qMzUQEYXlHY&s=e4vhdlLGFDlKFeljCwZUISv4Px7Z-L9cD-xegE3p6_c&e=>, or mute the thread <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_notifications_unsubscribe-2Dauth_ADBLCF3LFKX6Y3BBUICWONLPV7L4FANCNFSM4HNA4CBA&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=B77az0IRwuYDu9-shefXAEBK_6ZqnwZ2qMzUQEYXlHY&s=mrNZdLEeAvveF1DHtFhG-Iyx7tBi5yHp-4Zehx83Z_4&e=> .

[FrankEscobar]

What are the major differences between this code and the one already included in libigl? (I mean scaf_bin)

[jiangzhongshi]

Apart from the structure and a few functionalities, there's little difference.

…

On Tue, May 21, 2019 at 3:54 AM FrankEscobar ***@***.***> wrote: What are the major differences between this code and the one already included in libigl? (I mean scaf_bin) — You are receiving this because you commented. Reply to this email directly, view it on GitHub <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_jiangzhongshi_Scaffold-2DMap_issues_10-3Femail-5Fsource-3Dnotifications-26email-5Ftoken-3DADBLCF4NOKHQLQQZOB426BTPWOTDLA5CNFSM4HNA4CBKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODV3CIIQ-23issuecomment-2D494281762&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=XhQ6G85CASKO4DiC206Ww1v27UTZD9XCFMcbetuVZ2c&s=7ziJPlvghkHJ6e9g6-1cDEfqg8GqC4XKa8QEDe16GcU&e=>, or mute the thread <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_notifications_unsubscribe-2Dauth_ADBLCF3V7VEJE74IT5IOOVTPWOTDLANCNFSM4HNA4CBA&d=DwMCaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=2v3jiwtgToNyGgWlUiot8g&m=XhQ6G85CASKO4DiC206Ww1v27UTZD9XCFMcbetuVZ2c&s=Jx7pMcK-uOzhcA5yVPldmJLoOYkX5325Qf-u1ZeuP0c&e=> .