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authorMarcel Admiraal <madmiraal@users.noreply.github.com>2021-05-29 19:14:52 +0100
committerMarcel Admiraal <madmiraal@users.noreply.github.com>2021-05-29 19:14:52 +0100
commit3dc1a2951b17e7d71294f9f139ffcc5a3e4aa0ca (patch)
tree10fd76891c1511bfa4b3b059b6db0430222c5214 /modules/csg
parent364ea7f280a3f074795e542b16b1d0ec76cf6ce2 (diff)
Fix UV mapping on CSGSphere
Diffstat (limited to 'modules/csg')
-rw-r--r--modules/csg/csg_shape.cpp52
1 files changed, 25 insertions, 27 deletions
diff --git a/modules/csg/csg_shape.cpp b/modules/csg/csg_shape.cpp
index 541b7036ac..67dfdfb5eb 100644
--- a/modules/csg/csg_shape.cpp
+++ b/modules/csg/csg_shape.cpp
@@ -923,45 +923,43 @@ CSGBrush *CSGSphere3D::_build_brush() {
Ref<Material> *materialsw = materials.ptrw();
bool *invertw = invert.ptrw();
+ const double lat_step = 1.0 / rings;
+ const double lon_step = 1.0 / radial_segments;
int face = 0;
- const double lat_step = Math_TAU / rings;
- const double lon_step = Math_TAU / radial_segments;
-
for (int i = 1; i <= rings; i++) {
- double lat0 = lat_step * (i - 1) - Math_TAU / 4;
- double z0 = Math::sin(lat0);
- double zr0 = Math::cos(lat0);
- double u0 = double(i - 1) / rings;
-
- double lat1 = lat_step * i - Math_TAU / 4;
- double z1 = Math::sin(lat1);
- double zr1 = Math::cos(lat1);
- double u1 = double(i) / rings;
-
- for (int j = radial_segments; j >= 1; j--) {
- double lng0 = lon_step * (j - 1);
+ double lat0 = Math_PI * (0.5 - (i - 1) * lat_step);
+ double c0 = Math::cos(lat0);
+ double s0 = Math::sin(lat0);
+ double v0 = double(i - 1) / rings;
+
+ double lat1 = Math_PI * (0.5 - i * lat_step);
+ double c1 = Math::cos(lat1);
+ double s1 = Math::sin(lat1);
+ double v1 = double(i) / rings;
+
+ for (int j = 1; j <= radial_segments; j++) {
+ double lng0 = Math_TAU * (0.5 - (j - 1) * lon_step);
double x0 = Math::cos(lng0);
double y0 = Math::sin(lng0);
- double v0 = double(i - 1) / radial_segments;
+ double u0 = double(j - 1) / radial_segments;
- double lng1 = lon_step * j;
+ double lng1 = Math_TAU * (0.5 - j * lon_step);
double x1 = Math::cos(lng1);
double y1 = Math::sin(lng1);
- double v1 = double(i) / radial_segments;
+ double u1 = double(j) / radial_segments;
Vector3 v[4] = {
- Vector3(x1 * zr0, z0, y1 * zr0) * radius,
- Vector3(x1 * zr1, z1, y1 * zr1) * radius,
- Vector3(x0 * zr1, z1, y0 * zr1) * radius,
- Vector3(x0 * zr0, z0, y0 * zr0) * radius
+ Vector3(x0 * c0, s0, y0 * c0) * radius,
+ Vector3(x1 * c0, s0, y1 * c0) * radius,
+ Vector3(x1 * c1, s1, y1 * c1) * radius,
+ Vector3(x0 * c1, s1, y0 * c1) * radius,
};
Vector2 u[4] = {
- Vector2(v1, u0),
- Vector2(v1, u1),
- Vector2(v0, u1),
- Vector2(v0, u0),
-
+ Vector2(u0, v0),
+ Vector2(u1, v0),
+ Vector2(u1, v1),
+ Vector2(u0, v1),
};
if (i < rings) {