add graphics/core/Model

2024-06-21 02:30:35 +03:00
parent 916d1c1408
commit 6ba38ee167
5 changed files with 112 additions and 5 deletions
@@ -0,0 +1,28 @@
+#include "Model.hpp"
+
+using namespace model;
+
+inline constexpr glm::vec3 X(1, 0, 0);
+inline constexpr glm::vec3 Y(0, 1, 0);
+inline constexpr glm::vec3 Z(0, 0, 1);
+
+void Mesh::addPlane(glm::vec3 pos, glm::vec3 right, glm::vec3 up, glm::vec3 norm) {
+    vertices.push_back({pos-right-up, {0,0}, norm});
+    vertices.push_back({pos+right-up, {1,0}, norm});
+    vertices.push_back({pos+right+up, {1,1}, norm});
+
+    vertices.push_back({pos-right-up, {0,0}, norm});
+    vertices.push_back({pos+right+up, {1,1}, norm});
+    vertices.push_back({pos-right+up, {0,1}, norm});
+}
+
+void Mesh::addBox(glm::vec3 pos, glm::vec3 size) {
+    addPlane(pos+Z*size, X*size, Y*size, Z);
+    addPlane(pos-Z*size, -X*size, Y*size, -Z);
+
+    addPlane(pos+Y*size, X*size, -Z*size, Y);
+    addPlane(pos-Y*size, X*size, Z*size, -Y);
+
+    addPlane(pos+X*size, -Z*size, Y*size, X);
+    addPlane(pos-X*size, Z*size, Y*size, -X);
+}