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// Copyright (C) 2024 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "tilegeometry.h"
#include <QtGui/QVector3D>
#include <array>
struct QObjMesh
{
std::vector<unsigned int> indices;
std::vector<QVector3D> vertices;
std::vector<QVector2D> uvs;
};
QObjMesh calcUVs(const QObjMesh &obj)
{
QObjMesh result = obj;
QVector3D min = QVector3D(123456789.f, 123456789.f, 123456789.f);
QVector3D max = QVector3D(-123456789.f, -123456789.f, -123456789.f);
for (const auto &v : obj.vertices) {
min.setX(qMin(v.x(), min.x()));
min.setY(qMin(v.y(), min.y()));
min.setZ(qMin(v.z(), min.z()));
max.setX(qMax(v.x(), max.x()));
max.setY(qMax(v.y(), max.y()));
max.setZ(qMax(v.z(), max.z()));
}
QVector3D len = (max - min);
for (const auto &v : obj.vertices) {
QVector3D vmin = (v - min);
result.uvs.push_back(QVector2D(vmin.x() / len.x(), vmin.z() / len.z()));
}
return result;
}
QObjMesh getHoleMesh()
{
QObjMesh mesh;
mesh.vertices = {
QVector3D(-50, 0, 50), QVector3D(-50, 0, 25), QVector3D(-21, 0, 21), QVector3D(-25, 0, 50),
QVector3D(-25, 0, 50), QVector3D(-21, 0, 21), QVector3D(0, 0, 30), QVector3D(0, 0, 50),
QVector3D(0, 0, 50), QVector3D(0, 0, 30), QVector3D(21, 0, 21), QVector3D(25, 0, 50),
QVector3D(25, 0, 50), QVector3D(21, 0, 21), QVector3D(50, 0, 25), QVector3D(50, 0, 50),
QVector3D(-50, 0, 25), QVector3D(-50, 0, 0), QVector3D(-30, 0, 0), QVector3D(-21, 0, 21),
QVector3D(21, 0, 21), QVector3D(30, 0, 0), QVector3D(50, 0, 0), QVector3D(50, 0, 25),
QVector3D(-50, 0, 0), QVector3D(-50, 0, -25), QVector3D(-21, 0, -21), QVector3D(-30, 0, 0),
QVector3D(30, 0, 0), QVector3D(21, 0, -21), QVector3D(50, 0, -25), QVector3D(50, 0, 0),
QVector3D(-50, 0, -25), QVector3D(-50, 0, -50), QVector3D(-25, 0, -50), QVector3D(-21, 0, -21),
QVector3D(-21, 0, -21), QVector3D(-25, 0, -50), QVector3D(0, 0, -50), QVector3D(0, 0, -30),
QVector3D(0, 0, -30), QVector3D(0, 0, -50), QVector3D(25, 0, -50), QVector3D(21, 0, -21),
QVector3D(21, 0, -21), QVector3D(25, 0, -50), QVector3D(50, 0, -50), QVector3D(50, 0, -25),
QVector3D(-50, 10, 50), QVector3D(-25, 10, 50), QVector3D(-21, 10, 21), QVector3D(-50, 10, 25),
QVector3D(-25, 10, 50), QVector3D(0, 10, 50), QVector3D(0, 10, 30), QVector3D(-21, 10, 21),
QVector3D(0, 10, 50), QVector3D(25, 10, 50), QVector3D(21, 10, 21), QVector3D(0, 10, 30),
QVector3D(25, 10, 50), QVector3D(50, 10, 50), QVector3D(50, 10, 25), QVector3D(21, 10, 21),
QVector3D(-50, 10, 25), QVector3D(-21, 10, 21), QVector3D(-30, 10, 0), QVector3D(-50, 10, 0),
QVector3D(21, 10, 21), QVector3D(50, 10, 25), QVector3D(50, 10, 0), QVector3D(30, 10, 0),
QVector3D(-50, 10, 0), QVector3D(-30, 10, 0), QVector3D(-21, 10, -21), QVector3D(-50, 10, -25),
QVector3D(30, 10, 0), QVector3D(50, 10, 0), QVector3D(50, 10, -25), QVector3D(21, 10, -21),
QVector3D(-50, 10, -25), QVector3D(-21, 10, -21), QVector3D(-25, 10, -50), QVector3D(-50, 10, -50),
QVector3D(-21, 10, -21), QVector3D(0, 10, -30), QVector3D(0, 10, -50), QVector3D(-25, 10, -50),
QVector3D(0, 10, -30), QVector3D(21, 10, -21), QVector3D(25, 10, -50), QVector3D(0, 10, -50),
QVector3D(21, 10, -21), QVector3D(50, 10, -25), QVector3D(50, 10, -50), QVector3D(25, 10, -50),
QVector3D(30, 0, 0), QVector3D(21, 0, 21), QVector3D(21, 10, 21), QVector3D(30, 10, 0),
QVector3D(21, 0, 21), QVector3D(0, 0, 30), QVector3D(0, 10, 30), QVector3D(21, 10, 21),
QVector3D(0, 0, -30), QVector3D(21, 0, -21), QVector3D(21, 10, -21), QVector3D(0, 10, -30),
QVector3D(-30, 0, 0), QVector3D(-21, 0, -21), QVector3D(-21, 10, -21), QVector3D(-30, 10, 0),
QVector3D(0, 0, 30), QVector3D(-21, 0, 21), QVector3D(-21, 10, 21), QVector3D(0, 10, 30),
QVector3D(-21, 0, 21), QVector3D(-30, 0, 0), QVector3D(-30, 10, 0), QVector3D(-21, 10, 21),
QVector3D(-21, 0, -21), QVector3D(0, 0, -30), QVector3D(0, 10, -30), QVector3D(-21, 10, -21),
QVector3D(21, 0, -21), QVector3D(30, 0, 0), QVector3D(30, 10, 0), QVector3D(21, 10, -21)
};
mesh.indices = { 0, 1, 3, 1, 2, 3, 4, 5, 7, 5, 6, 7, 8, 9, 11, 9, 10, 11, 12, 13,
15, 13, 14, 15, 16, 17, 19, 17, 18, 19, 20, 21, 23, 21, 22, 23, 24, 25, 27, 25,
26, 27, 28, 29, 31, 29, 30, 31, 32, 33, 35, 33, 34, 35, 36, 37, 39, 37, 38, 39,
40, 41, 43, 41, 42, 43, 44, 45, 47, 45, 46, 47, 48, 49, 51, 49, 50, 51, 52, 53,
55, 53, 54, 55, 56, 57, 59, 57, 58, 59, 60, 61, 63, 61, 62, 63, 64, 65, 67, 65,
66, 67, 68, 69, 71, 69, 70, 71, 72, 73, 75, 73, 74, 75, 76, 77, 79, 77, 78, 79,
80, 81, 83, 81, 82, 83, 84, 85, 87, 85, 86, 87, 88, 89, 91, 89, 90, 91, 92, 93,
95, 93, 94, 95, 96, 97, 99, 97, 98, 99, 100, 101, 103, 101, 102, 103, 104, 105, 107, 105,
106, 107, 108, 109, 111, 109, 110, 111, 112, 113, 115, 113, 114, 115, 116, 117, 119, 117, 118, 119,
120, 121, 123, 121, 122, 123, 124, 125, 127, 125, 126, 127 };
return mesh;
}
QObjMesh getFloorMesh()
{
QObjMesh mesh;
mesh.vertices = {
QVector3D(-50, 0, 50), QVector3D(-50, 0, 25), QVector3D(-25, 0, 25), QVector3D(-25, 0, 50),
QVector3D(-25, 0, 50), QVector3D(-25, 0, 25), QVector3D(0, 0, 25), QVector3D(0, 0, 50),
QVector3D(0, 0, 50), QVector3D(0, 0, 25), QVector3D(25, 0, 25), QVector3D(25, 0, 50),
QVector3D(25, 0, 50), QVector3D(25, 0, 25), QVector3D(50, 0, 25), QVector3D(50, 0, 50),
QVector3D(-50, 0, 25), QVector3D(-50, 0, 0), QVector3D(-25, 0, 0), QVector3D(-25, 0, 25),
QVector3D(-25, 0, 25), QVector3D(-25, 0, 0), QVector3D(0, 0, 0), QVector3D(0, 0, 25),
QVector3D(0, 0, 25), QVector3D(0, 0, 0), QVector3D(25, 0, 0), QVector3D(25, 0, 25),
QVector3D(25, 0, 25), QVector3D(25, 0, 0), QVector3D(50, 0, 0), QVector3D(50, 0, 25),
QVector3D(-50, 0, 0), QVector3D(-50, 0, -25), QVector3D(-25, 0, -25), QVector3D(-25, 0, 0),
QVector3D(-25, 0, 0), QVector3D(-25, 0, -25), QVector3D(0, 0, -25), QVector3D(0, 0, 0),
QVector3D(0, 0, 0), QVector3D(0, 0, -25), QVector3D(25, 0, -25), QVector3D(25, 0, 0),
QVector3D(25, 0, 0), QVector3D(25, 0, -25), QVector3D(50, 0, -25), QVector3D(50, 0, 0),
QVector3D(-50, 0, -25), QVector3D(-50, 0, -50), QVector3D(-25, 0, -50), QVector3D(-25, 0, -25),
QVector3D(-25, 0, -25), QVector3D(-25, 0, -50), QVector3D(0, 0, -50), QVector3D(0, 0, -25),
QVector3D(0, 0, -25), QVector3D(0, 0, -50), QVector3D(25, 0, -50), QVector3D(25, 0, -25),
QVector3D(25, 0, -25), QVector3D(25, 0, -50), QVector3D(50, 0, -50), QVector3D(50, 0, -25),
QVector3D(-50, 10, 50), QVector3D(-25, 10, 50), QVector3D(-25, 10, 25), QVector3D(-50, 10, 25),
QVector3D(-25, 10, 50), QVector3D(0, 10, 50), QVector3D(0, 10, 25), QVector3D(-25, 10, 25),
QVector3D(0, 10, 50), QVector3D(25, 10, 50), QVector3D(25, 10, 25), QVector3D(0, 10, 25),
QVector3D(25, 10, 50), QVector3D(50, 10, 50), QVector3D(50, 10, 25), QVector3D(25, 10, 25),
QVector3D(-50, 10, 25), QVector3D(-25, 10, 25), QVector3D(-25, 10, 0), QVector3D(-50, 10, 0),
QVector3D(-25, 10, 25), QVector3D(0, 10, 25), QVector3D(0, 10, 0), QVector3D(-25, 10, 0),
QVector3D(0, 10, 25), QVector3D(25, 10, 25), QVector3D(25, 10, 0), QVector3D(0, 10, 0),
QVector3D(25, 10, 25), QVector3D(50, 10, 25), QVector3D(50, 10, 0), QVector3D(25, 10, 0),
QVector3D(-50, 10, 0), QVector3D(-25, 10, 0), QVector3D(-25, 10, -25), QVector3D(-50, 10, -25),
QVector3D(-25, 10, 0), QVector3D(0, 10, 0), QVector3D(0, 10, -25), QVector3D(-25, 10, -25),
QVector3D(0, 10, 0), QVector3D(25, 10, 0), QVector3D(25, 10, -25), QVector3D(0, 10, -25),
QVector3D(25, 10, 0), QVector3D(50, 10, 0), QVector3D(50, 10, -25), QVector3D(25, 10, -25),
QVector3D(-50, 10, -25), QVector3D(-25, 10, -25), QVector3D(-25, 10, -50), QVector3D(-50, 10, -50),
QVector3D(-25, 10, -25), QVector3D(0, 10, -25), QVector3D(0, 10, -50), QVector3D(-25, 10, -50),
QVector3D(0, 10, -25), QVector3D(25, 10, -25), QVector3D(25, 10, -50), QVector3D(0, 10, -50),
QVector3D(25, 10, -25), QVector3D(50, 10, -25), QVector3D(50, 10, -50), QVector3D(25, 10, -50)
};
mesh.indices = { 0, 1, 3, 1, 2, 3, 4, 5, 7, 5, 6, 7, 8, 9, 11, 9, 10, 11, 12, 13,
15, 13, 14, 15, 16, 17, 19, 17, 18, 19, 20, 21, 23, 21, 22, 23, 24, 25, 27, 25,
26, 27, 28, 29, 31, 29, 30, 31, 32, 33, 35, 33, 34, 35, 36, 37, 39, 37, 38, 39,
40, 41, 43, 41, 42, 43, 44, 45, 47, 45, 46, 47, 48, 49, 51, 49, 50, 51, 52, 53,
55, 53, 54, 55, 56, 57, 59, 57, 58, 59, 60, 61, 63, 61, 62, 63, 64, 65, 67, 65,
66, 67, 68, 69, 71, 69, 70, 71, 72, 73, 75, 73, 74, 75, 76, 77, 79, 77, 78, 79,
80, 81, 83, 81, 82, 83, 84, 85, 87, 85, 86, 87, 88, 89, 91, 89, 90, 91, 92, 93,
95, 93, 94, 95, 96, 97, 99, 97, 98, 99, 100, 101, 103, 101, 102, 103, 104, 105, 107, 105,
106, 107, 108, 109, 111, 109, 110, 111, 112, 113, 115, 113, 114, 115, 116, 117, 119, 117, 118, 119,
120, 121, 123, 121, 122, 123, 124, 125, 127, 125, 126, 127 };
return mesh;
}
void TileGeometry::createFloor()
{
auto mesh = calcUVs(m_hasHole ? getHoleMesh() : getFloorMesh());
// pos + uv
constexpr int kStride = sizeof(QVector3D) + sizeof(QVector2D);
QByteArray vertexData(mesh.vertices.size() * kStride, Qt::Initialization::Uninitialized);
for (size_t i = 0; i < mesh.vertices.size(); i++) {
QVector3D *vertex = reinterpret_cast<QVector3D *>(vertexData.data() + (kStride * i));
QVector2D *uv = reinterpret_cast<QVector2D *>(vertexData.data() + (kStride * i) + sizeof(QVector3D));
*vertex = mesh.vertices[i];
*uv = mesh.uvs[i];
}
QByteArray indexBuffer(mesh.indices.size() * sizeof(unsigned int), Qt::Initialization::Uninitialized);
memcpy(indexBuffer.data(), mesh.indices.data(), mesh.indices.size() * sizeof(unsigned int));
clear();
setVertexData(vertexData);
setStride(kStride);
setBounds(QVector3D(-50.0f, -50.0f, -50.0f), QVector3D(+50.0f, +50.0f, +50.0f));
setPrimitiveType(QQuick3DGeometry::PrimitiveType::Triangles);
addAttribute(QQuick3DGeometry::Attribute::PositionSemantic, 0, QQuick3DGeometry::Attribute::F32Type);
addAttribute(QQuick3DGeometry::Attribute::TexCoordSemantic, sizeof(QVector3D), QQuick3DGeometry::Attribute::F32Type);
addAttribute(QQuick3DGeometry::Attribute::IndexSemantic, 0, QQuick3DGeometry::Attribute::U32Type);
setIndexData(indexBuffer);
update();
}
TileGeometry::TileGeometry()
{
createFloor();
}
void TileGeometry::setHasHole(bool v)
{
if (m_hasHole == v)
return;
m_hasHole = v;
createFloor();
emit hasHoleChanged(v);
}
bool TileGeometry::hasHole()
{
return m_hasHole;
}
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