summaryrefslogtreecommitdiff
path: root/game/geoData.cpp
diff options
context:
space:
mode:
authorDan Goodliffe <dan@randomdan.homeip.net>2024-04-07 16:13:42 +0100
committerDan Goodliffe <dan@randomdan.homeip.net>2024-04-07 16:13:42 +0100
commit7d1351c2a25d71d312bf341ccab6fe6ca213023f (patch)
treeb83f838d9d7e567b7d672e6e63ff716b4f74c754 /game/geoData.cpp
parentSplit water from terrain (diff)
downloadilt-7d1351c2a25d71d312bf341ccab6fe6ca213023f.tar.bz2
ilt-7d1351c2a25d71d312bf341ccab6fe6ca213023f.tar.xz
ilt-7d1351c2a25d71d312bf341ccab6fe6ca213023f.zip
Fix creating a flat terrain of exactly the requested size
Which must be a size of multiples of GRID_SIZE, 10m
Diffstat (limited to 'game/geoData.cpp')
-rw-r--r--game/geoData.cpp26
1 files changed, 13 insertions, 13 deletions
diff --git a/game/geoData.cpp b/game/geoData.cpp
index ed4303b..2313342 100644
--- a/game/geoData.cpp
+++ b/game/geoData.cpp
@@ -65,36 +65,36 @@ GeoData::loadFromAsciiGrid(const std::filesystem::path & input)
return mesh;
};
-template<typename T> constexpr static T GRID_SIZE = 10'000;
+constexpr static GlobalDistance GRID_SIZE = 10'000;
GeoData
GeoData::createFlat(GlobalPosition2D lower, GlobalPosition2D upper, GlobalDistance h)
{
+ assert((upper - lower) % GRID_SIZE == GlobalPosition2D {});
GeoData mesh;
mesh.lowerExtent = {lower, h};
mesh.upperExtent = {upper, h};
std::vector<VertexHandle> vertices;
- for (GlobalDistance row = lower.x; row < upper.x; row += GRID_SIZE<GlobalDistance>) {
- for (GlobalDistance col = lower.y; col < upper.y; col += GRID_SIZE<GlobalDistance>) {
+ for (GlobalDistance row = lower.x; row <= upper.x; row += GRID_SIZE) {
+ for (GlobalDistance col = lower.y; col <= upper.y; col += GRID_SIZE) {
vertices.push_back(mesh.add_vertex({col, row, h}));
}
}
- const auto nrows = static_cast<size_t>(std::ceil(float(upper.x - lower.x) / GRID_SIZE<RelativeDistance>));
- const auto ncols = static_cast<size_t>(std::ceil(float(upper.y - lower.y) / GRID_SIZE<RelativeDistance>));
- for (size_t row = 1; row < nrows; ++row) {
- for (size_t col = 1; col < ncols; ++col) {
+ const auto n = glm::vec<2, size_t> {((upper - lower) / GRID_SIZE) + 1};
+ for (auto row = 1U; row < n.x; ++row) {
+ for (auto col = 1U; col < n.y; ++col) {
mesh.add_face({
- vertices[ncols * (row - 1) + (col - 1)],
- vertices[ncols * (row - 0) + (col - 0)],
- vertices[ncols * (row - 0) + (col - 1)],
+ vertices[n.y * (row - 1) + (col - 1)],
+ vertices[n.y * (row - 0) + (col - 0)],
+ vertices[n.y * (row - 0) + (col - 1)],
});
mesh.add_face({
- vertices[ncols * (row - 1) + (col - 1)],
- vertices[ncols * (row - 1) + (col - 0)],
- vertices[ncols * (row - 0) + (col - 0)],
+ vertices[n.y * (row - 1) + (col - 1)],
+ vertices[n.y * (row - 1) + (col - 0)],
+ vertices[n.y * (row - 0) + (col - 0)],
});
}
}