Re: Coons and Tensor-product patch mesh shading in MetaPost
Hans Hagen via ntg-context <[email protected]> Fri, 10 Jul 2026 11:44:56 +0200
| Newsgroups | gmane.comp.tex.context |
|---|---|
| Message-ID | <[email protected]> |
T24gNy84LzIwMjYgMTI6MjEgUE0sIEZsb3JlbnQgTWljaGVsIHdyb3RlOg0KPiBIaSBIYW5zLA0K PiANCj4gVG8gYmUgaG9uZXN0LCBJIGNhbid0IHRoaW5rIG9mIGEgdXNlLWNhc2UgdGhhdCB3b3Vs ZCBqdXN0aWZ5IHRoZcKgd29yayBvZiANCj4gaW1wbGVtZW50aW5nIHRoZXNlIHNoYWRpbmdzIGlm IHRoZXkgYXJlIG5vdCBhbHJlYWR5IHRoZXJlLiBJIGFtIG5vdCBhYmxlIA0KPiB0byBzaGFyZSB0 aGUgc3BlY2lmaWMgZXhhbXBsZSBJJ20gd29ya2luZyBvbiwgYnV0IHRoZSBpZGVhIGlzIHRvIGRy YXcgYSANCj4gc3VyZmFjZSBwbG90IHdpdGggbmVhdGVyIGludGVycG9sYXRpb24gdGhhbiwgc2F5 LCBhIGxpbmVhciBzaGFkaW5nIGNhbiANCj4gcHJvdmlkZSB3aXRoIGEgcmVsYXRpdmVseSBzbWFs bCBudW1iZXIgb2YgcGF0Y2hlcyAoc2VlIHRoZSBleGFtcGxlIOKAmEEgDQo+IENvb25zIHBhdGNo 4oCZIGZvciBhbiBleGFtcGxlIHdpdGggYSBzaW5nbGUgcGF0Y2ggaHR0cHM6Ly90aWt6LmRldi8g DQo+IHBnZnBsb3RzL2xpYnMtcGF0Y2hwbG90cyA8aHR0cHM6Ly90aWt6LmRldi9wZ2ZwbG90cy9s aWJzLXBhdGNocGxvdHM+KS4NCj4gDQo+IE5vdGhpbmcgdGhhdCBjYW4ndCBiZSBhY2hpZXZlZCB3 aXRoIGV4aXN0aW5nIHRvb2xzLCB0aG91Z2gsIGUuZy4gDQo+IE1ldGFQb3N0IHdpdGggbGluZWFy IC8gcmFkaWFsIHNoYWRpbmdzIGFuZCBhIGZpbmVyIHN1Yi1kaXZpc2lvbiBpbiBwYXRjaGVzLg0K SSBnYXZlIGl0IHNvbWUgdGhvdWdodCAoYWdhaW4pIGJ1dCBkaWRuJ3QgY2hhbmdlIG15IHZpZXcg b24gdGhlc2UgbWF0dGVyczoNCg0KLSB0aGlzIGtpbmQgb2YgbWVzaGluZyBpcyBub3JtYWxseSB0 aGUgcmVzdWx0IG9mIHNvbWUgZnVuY3Rpb24gZHJpdmVuIA0KcmVuZGVyaW5nDQotIHNvIHlvdSBl bmQgdXAgd2l0aCBtYW55IGUuZy4gdHJpYW5nbGVzLCBzYXkgdGhvdXNhbmRzIG9yIGV2ZW4gdGVu cyBvZiANCnRob3VzYW5kcw0KLSB3aGljaCBpcyB3aHkgdGhlcmUgaXMgdGhhdCBjb21wbGV4IGFw cHJvYWNoIG9mIDEtMzIgYml0IGludGVnZXJzLCANCmNvbG9ycyBldGMNCi0gcHV0dGluZyBwYXRo cyBvbiB0aGUgIndpdGgiIHNwZWNpZmljYXRpb24gbWFrZXMgbGl0dGxlIHNlbnNlIGJlY2F1c2Ug DQpvbmUgYWxyZWFkeSBoYXZlIGEgcGF0aCBhbmQgdGhhdCBvbncgY2FuIGJlIHNlZ21lbnRlZCBz byBiYXNpY2FsbHkgb25lIA0Kb25seSBuZWVkcyBjb2xvciBzcGVjcyBvbiB0b3Agb2YgdGhhdCB0 aGVuDQoNCkJhc2ljYWxseSB0aGVzZSBzaGFkaW5nIG1lY2hhbmlzbXMgYXJlIHRoZXJlIHRvIGFj Y29tb2RhdGUgc29tZSANCmFwcGxpY2F0aW9ucy4gU286DQoNCi0gc3RhcnRpbmcgZnJvbSB0aGUg c3BlYyB0byBjb21lIHVwIHdpdGggc29tZSBpbnRlcmZhY2UgbWFrZXMgbGl0dGxlIHNlbnNlDQot IG5vIG9uZSBpcyBnb2luZyB0byBlbnRlciA1MDAwICogbiAid2l0aHNvbWV0aGluZyIgc3BlY2lm aWVycyB3aGljaCBpcyANCmluZWZmaWNpZW50IGFuZCBsaWtlbHkgZ2VuZXJhdGVkIGFueXdheQ0K LSBzbyB3ZSdyZSBiYXNpY2FsbHkgZnVuY3Rpb24gZHJpdmVuDQotIHdoaWNoIG1lYW5zIHRoYXQg dGhlcmUgYXJlIGZ1bmN0aW9ucyBiZWhpbmQgdGhlIG1lc2ggYXMgd2VsbCBhcyBjb2xvcmluZw0K LSB3aGljaCBldmVudHVhbGx5IGluIHRoZSB2aWV3ZXIgcmVzdWx0cyBpbiBhIGJpdG1hcA0KDQpB bHNvOg0KDQotIGlmIHdlIGltcGxlbWVudCB0aGlzIGJhc2ljYWxseSB3ZSBnZW5lcmF0ZSBzb21l IGh1Z2Ugc3BlY2lmaWNhdGlvbiBpbiANCm9yZGVyIHRvIGNvbWUgdXAgd2l0aCBzb21lIGJpdG1h cCBpbiB0aGUgZW5kIC4uLiBwZGYgYmxvYXQNCi0gd2UncmUgbm90IHRhbGtpbmcgM0QgYW5pbWF0 aW9uLWluLXBkZiB3aGljaCBidHcgaXMgYWxzbyBraW5kIG9mIG1lc3N5IA0KYW5kIHdoeSB3b3Vs ZCBvbmUgdXNlIHBkZiBmb3IgdGhhdCBhbnl3YXkNCg0KVGhhdCBzYWlkOg0KDQotIGl0IG1ha2Vz IHZlcnkgbGl0dGxlIHNlbnNlIHRvIHdhc3RlIHRpbWUgb24gdGhpcyBhbmQgYW5kIHVnbHkgY29k ZSB0byANCnRoZSBjb2RlYmFzZQ0KLSBpZiB5b3UgaGF2ZSBhIHNwZWNpZmljIHVzZSBjYXNlIHdl IGNhbiBzZWUgaWYgd2UgY2FuIGFscmVhZHkgaGFuZGxlIGl0IA0KYnkgdXNpbmcgZGlmZmVyZW50 IG1lY2hhbmlzbXMgcHJlc2VudCBpbiBsdWFtZXRhZnVuDQotIHNob3dpbmcgb2ZmIHRoYXQgd2Ug Y2FuIHN1cHBvcnQgZXZlcnkgcGRmIGZlYXR1cmVzIG1ha2VzIGxpdHRsZSBzZW5zZSANCihubyBv bmUgcGF5cyBmb3IgdGhhdCBhbnl3YXkpDQotIG5vdCB0aGUgcGRmIHNwZWMgaXMgdGhlIHN0YXJ0 aW5nIHBvaW50IGJ1dCB3aGF0IHVzZXJzIG5lZWQgaXMNCg0KQW5kIGZvciB0aGUgcmFyZSBjYXNl cyBvbmUgbmVlZHMgdGhpcywgdXNpbmcgc29tZSByZWFsIGFkdmFuY2VkIA0KYXBwbGljYXRpb24g YW5kIGV4cG9ydGluZyBtYWtlcyBtb3JlIHNlbnNlLg0KDQpIYW5zDQoNCg0KLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0NCiAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBIYW5zIEhhZ2VuIHwgUFJB R01BIEFERQ0KICAgICAgICAgICAgICAgUmlkZGVyc3RyYWF0IDI3IHwgODA2MSBHSCBIYXNzZWx0 IHwgVGhlIE5ldGhlcmxhbmRzDQogICAgICAgIHRlbDogMDM4IDQ3NyA1MyA2OSB8IHd3dy5wcmFn bWEtYWRlLm5sIHwgd3d3LnByYWdtYS1wb2QubmwNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tDQpfX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpJZiB5b3VyIHF1ZXN0aW9uIGlzIG9mIGludGVyZXN0IHRvIG90aGVycyBhcyB3 ZWxsLCBwbGVhc2UgYWRkIGFuIGVudHJ5IHRvIHRoZSBXaWtpIQoKbWFpbGxpc3QgOiBudGctY29u dGV4dEBudGcubmwgLyBodHRwczovL21haWxtYW4ubnRnLm5sL21haWxtYW4zL2xpc3RzL250Zy1j b250ZXh0Lm50Zy5ubAp3ZWJwYWdlICA6IGh0dHBzOi8vd3d3LnByYWdtYS1hZGUubmwgLyBodHRw czovL2NvbnRleHQuYWFuaGV0Lm5ldCAobWlycm9yKQphcmNoaXZlICA6IGh0dHBzOi8vZ2l0aHVi LmNvbS9jb250ZXh0Z2FyZGVuL2NvbnRleHQKd2lraSAgICAgOiBodHRwczovL3dpa2kuY29udGV4 dGdhcmRlbi5uZXQKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18K