Multithreaded world generation with Perlin

1 files changed, 77 insertions, 0 deletions

diff --git a/src/Math/Grid.cpp b/src/Math/Grid.cpp
new file mode 100644
index 0000000..422cf87
--- /dev/null
+++ b/src/Math/Grid.cpp
@@ -0,0 +1,77 @@
+#include "Grid.hpp"
+
+namespace Math {
+
+GridCellBoundaries grid_cell_for_point(Vector<2> point) {
+    auto x1 = std::trunc(point.x());
+    auto y1 = std::trunc(point.y());
+    auto x2 = x1 + 1.0f;
+    auto y2 = y1 + 1.0f;
+
+    return GridCellBoundaries{x1, x2, y1, y2};
+}
+
+Vector<2> GridCellBoundaries::top_left() const {
+    return {x1, y1};
+}
+
+Vector<2> GridCellBoundaries::top_right() const {
+    return {x2, y1};
+}
+
+Vector<2> GridCellBoundaries::bottom_left() const {
+    return {x1, y2};
+}
+
+Vector<2> GridCellBoundaries::bottom_right() const {
+    return {x2, y2};
+}
+
+CubeCellBoundaries cube_cell_for_point(Vector<3> point) {
+    auto x1 = std::trunc(point.x());
+    auto y1 = std::trunc(point.y());
+    auto z1 = std::trunc(point.z());
+    auto x2 = x1 + 1.0f;
+    auto y2 = y1 + 1.0f;
+    auto z2 = z1 + 1.0f;
+
+    return CubeCellBoundaries{x1, x2, y1, y2, z1, z2};
+}
+
+Vector<3> CubeCellBoundaries::front_top_left() const {
+    return {x1, y1, z1};
+}
+
+Vector<3> CubeCellBoundaries::front_top_right() const {
+    return {x2, y1, z1};
+}
+
+Vector<3> CubeCellBoundaries::front_bottom_left() const {
+    return {x1, y2, z1};
+}
+
+Vector<3> CubeCellBoundaries::front_bottom_right() const {
+    return {x2, y2, z1};
+}
+
+Vector<3> CubeCellBoundaries::back_top_left() const {
+    return {x1, y1, z2};
+}
+
+Vector<3> CubeCellBoundaries::back_top_right() const {
+    return {x2, y1, z2};
+}
+
+Vector<3> CubeCellBoundaries::back_bottom_left() const {
+    return {x1, y2, z2};
+}
+
+Vector<3> CubeCellBoundaries::back_bottom_right() const {
+    return {x2, y2, z2};
+}
+
+GridCellBoundaries CubeCellBoundaries::grid_cell() const {
+    return {x1, x2, y1, y2};
+}
+
+}
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