ccolin/mod_geo-tp
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lower the quadratic patch resolution

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ccolin 2021-11-13 13:31:31 +01:00
parent c97e80929e
commit 1d1f2c22f7
1 changed files with 11 additions and 10 deletions
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21
src/quad_patch_tesselator.cpp
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@ -2,6 +2,7 @@
MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) { MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
const size_t patch_divs = 8;
MyMesh patch; MyMesh patch;
Eigen::Vector3d point Eigen::Vector3d point
(mesh.point(vh)[0], mesh.point(vh)[1], mesh.point(vh)[2]); (mesh.point(vh)[0], mesh.point(vh)[1], mesh.point(vh)[2]);
@ -17,10 +18,10 @@ MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
ymin = std::min(ymin, point[1]); ymin = std::min(ymin, point[1]);
ymax = std::max(ymax, point[1]); ymax = std::max(ymax, point[1]);
} }
double xstep = (xmax-xmin)/64.; double xstep = (xmax-xmin)/static_cast<double>(patch_divs);
double ystep = (ymax-ymin)/64.; double ystep = (ymax-ymin)/static_cast<double>(patch_divs);
for (size_t y = 0; y < 64; y++) { for (size_t y = 0; y < patch_divs; y++) {
for (size_t x = 0; x < 64; x++) { for (size_t x = 0; x < patch_divs; x++) {
double dx = xmin + x * xstep; double dx = xmin + x * xstep;
double dy = ymin + y * ystep; double dy = ymin + y * ystep;
Eigen::Vector3d point(dx, dy, -q(dx, dy)); Eigen::Vector3d point(dx, dy, -q(dx, dy));
@ -31,14 +32,14 @@ MyMesh tesselate_quad_patch(QuadPatch q, MyMesh mesh, VertexHandle vh) {
for (VertexHandle vhi : patch.vertices()) { for (VertexHandle vhi : patch.vertices()) {
patch.set_color(vhi, MyMesh::Color(0, 1, .2)); patch.set_color(vhi, MyMesh::Color(0, 1, .2));
size_t i = vhi.idx(); size_t i = vhi.idx();
size_t x = i % 64; size_t x = i % patch_divs;
size_t y = i / 64; size_t y = i / patch_divs;
if (x == 63 || y == 63) continue; if (x == patch_divs - 1 || y == patch_divs - 1) continue;
patch.add_face(vhi, patch.vertex_handle(i + 64), patch.add_face(vhi, patch.vertex_handle(i + patch_divs),
patch.vertex_handle(i + 1)); patch.vertex_handle(i + 1));
patch.add_face(patch.vertex_handle(i + 1), patch.add_face(patch.vertex_handle(i + 1),
patch.vertex_handle(i + 64), patch.vertex_handle(i + patch_divs),
patch.vertex_handle(i + 65)); patch.vertex_handle(i + patch_divs + 1));
} }
return patch; return patch;
} }