81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
#include "Model.hpp"
|
|
|
|
#include <algorithm>
|
|
|
|
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(
|
|
const glm::vec3& pos,
|
|
const glm::vec3& right,
|
|
const glm::vec3& up,
|
|
const 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::addPlane(
|
|
const glm::vec3& pos,
|
|
const glm::vec3& right,
|
|
const glm::vec3& up,
|
|
const glm::vec3& norm,
|
|
const UVRegion& uv
|
|
) {
|
|
vertices.push_back({pos-right-up, {uv.u1, uv.v1}, norm});
|
|
vertices.push_back({pos+right-up, {uv.u2, uv.v1}, norm});
|
|
vertices.push_back({pos+right+up, {uv.u2, uv.v2}, norm});
|
|
|
|
vertices.push_back({pos-right-up, {uv.u1, uv.v1}, norm});
|
|
vertices.push_back({pos+right+up, {uv.u2, uv.v2}, norm});
|
|
vertices.push_back({pos-right+up, {uv.u1, uv.u2}, norm});
|
|
}
|
|
|
|
void Mesh::addBox(const glm::vec3& pos, const 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);
|
|
}
|
|
|
|
void Mesh::addBox(
|
|
const glm::vec3& pos, const glm::vec3& size, const UVRegion (&uvs)[6]
|
|
) {
|
|
addPlane(pos+Z*size, X*size, Y*size, Z, uvs[0]);
|
|
addPlane(pos-Z*size, -X*size, Y*size, -Z, uvs[1]);
|
|
|
|
addPlane(pos+Y*size, X*size, -Z*size, Y, uvs[2]);
|
|
addPlane(pos-Y*size, X*size, Z*size, -Y, uvs[3]);
|
|
|
|
addPlane(pos+X*size, -Z*size, Y*size, X, uvs[4]);
|
|
addPlane(pos-X*size, Z*size, Y*size, -X, uvs[5]);
|
|
}
|
|
|
|
void Mesh::scale(const glm::vec3& size) {
|
|
for (auto& vertex : vertices) {
|
|
vertex.coord *= size;
|
|
}
|
|
}
|
|
|
|
void Model::clean() {
|
|
meshes.erase(
|
|
std::remove_if(meshes.begin(), meshes.end(),
|
|
[](const Mesh& mesh){
|
|
return mesh.vertices.empty();
|
|
}),
|
|
meshes.end()
|
|
);
|
|
}
|