diff options
Diffstat (limited to 'src/render/geometry/qspheremesh.cpp')
| -rw-r--r-- | src/render/geometry/qspheremesh.cpp | 377 |
1 files changed, 14 insertions, 363 deletions
diff --git a/src/render/geometry/qspheremesh.cpp b/src/render/geometry/qspheremesh.cpp index 6e5b6ce4f..bd93c0ab6 100644 --- a/src/render/geometry/qspheremesh.cpp +++ b/src/render/geometry/qspheremesh.cpp @@ -35,368 +35,21 @@ ** ****************************************************************************/ -#ifndef _USE_MATH_DEFINES -# define _USE_MATH_DEFINES // For MSVC -#endif - #include "qspheremesh.h" -#include <Qt3DRenderer/private/renderlogging_p.h> -#include <Qt3DRenderer/qbufferfunctor.h> -#include <Qt3DRenderer/qbuffer.h> -#include <Qt3DRenderer/qattribute.h> - -#include <qmath.h> +#include "qspheregeometry.h" QT_BEGIN_NAMESPACE namespace Qt3DRender { -namespace { - -QByteArray createSphereMeshVertexData(float radius, int rings, int slices) -{ - QByteArray bufferBytes; - // vec3 pos, vec2 texCoord, vec3 normal, vec4 tangent - const quint32 elementSize = 3 + 2 + 3 + 4; - const quint32 stride = elementSize * sizeof(float); - const int nVerts = (slices + 1) * (rings + 1); - bufferBytes.resize(stride * nVerts); - - float* fptr = reinterpret_cast<float*>(bufferBytes.data()); - - const float dTheta = (M_PI * 2) / static_cast<float>( slices ); - const float dPhi = M_PI / static_cast<float>( rings ); - const float du = 1.0f / static_cast<float>( slices ); - const float dv = 1.0f / static_cast<float>( rings ); - - // Iterate over latitudes (rings) - for ( int lat = 0; lat < rings + 1; ++lat ) - { - const float phi = M_PI_2 - static_cast<float>( lat ) * dPhi; - const float cosPhi = qCos( phi ); - const float sinPhi = qSin( phi ); - const float v = 1.0f - static_cast<float>( lat ) * dv; - - // Iterate over longitudes (slices) - for ( int lon = 0; lon < slices + 1; ++lon ) - { - const float theta = static_cast<float>( lon ) * dTheta; - const float cosTheta = qCos( theta ); - const float sinTheta = qSin( theta ); - const float u = static_cast<float>( lon ) * du; - - *fptr++ = radius * cosTheta * cosPhi; - *fptr++ = radius * sinPhi; - *fptr++ = radius * sinTheta * cosPhi; - - *fptr++ = u; - *fptr++ = v; - - *fptr++ = cosTheta * cosPhi; - *fptr++ = sinPhi; - *fptr++ = sinTheta * cosPhi; - - *fptr++ = sinTheta; - *fptr++ = 0.0; - *fptr++ = -cosTheta; - *fptr++ = 1.0; - } - } - return bufferBytes; -} - -QByteArray createSphereMeshIndexData(int rings, int slices) -{ - int faces = (slices * 2) * (rings - 2); // two tris per slice, for all middle rings - faces += 2 * slices; // tri per slice for both top and bottom - - QByteArray indexBytes; - const int indices = faces * 3; - Q_ASSERT(indices < 65536); - indexBytes.resize(indices * sizeof(quint16)); - quint16 *indexPtr = reinterpret_cast<quint16*>(indexBytes.data()); - - // top cap - { - const int nextRingStartIndex = slices + 1; - for ( int j = 0; j < slices; ++j ) - { - *indexPtr++ = nextRingStartIndex + j; - *indexPtr++ = 0; - *indexPtr++ = nextRingStartIndex + j + 1; - } - } - - for ( int i = 1; i < (rings - 1); ++i ) - { - const int ringStartIndex = i * ( slices + 1 ); - const int nextRingStartIndex = ( i + 1 ) * ( slices + 1 ); - - for ( int j = 0; j < slices; ++j ) - { - // Split the quad into two triangles - *indexPtr++ = ringStartIndex + j; - *indexPtr++ = ringStartIndex + j + 1; - *indexPtr++ = nextRingStartIndex + j; - *indexPtr++ = nextRingStartIndex + j; - *indexPtr++ = ringStartIndex + j + 1; - *indexPtr++ = nextRingStartIndex + j + 1; - } - } - - // bottom cap - { - const int ringStartIndex = (rings - 1) * ( slices + 1); - const int nextRingStartIndex = (rings) * ( slices + 1); - for ( int j = 0; j < slices; ++j ) - { - *indexPtr++ = ringStartIndex + j + 1; - *indexPtr++ = nextRingStartIndex; - *indexPtr++ = ringStartIndex + j; - } - } - - return indexBytes; -} - -} // anonymous - -class SphereVertexDataFunctor : public QBufferFunctor -{ -public: - SphereVertexDataFunctor(int rings, int slices, float radius) - : m_rings(rings) - , m_slices(slices) - , m_radius(radius) - { - } - - QByteArray operator ()() Q_DECL_OVERRIDE - { - return createSphereMeshVertexData(m_radius, m_rings, m_slices); - } - - bool operator ==(const QBufferFunctor &other) const Q_DECL_OVERRIDE - { - const SphereVertexDataFunctor *otherFunctor = functor_cast<SphereVertexDataFunctor>(&other); - if (otherFunctor != Q_NULLPTR) - return (otherFunctor->m_rings == m_rings && - otherFunctor->m_slices == m_slices && - otherFunctor->m_radius == m_radius); - return false; - } - - QT3D_FUNCTOR(SphereVertexDataFunctor) - -private: - int m_rings; - int m_slices; - float m_radius; -}; - -class SphereIndexDataFunctor : public QBufferFunctor -{ -public: - SphereIndexDataFunctor(int rings, int slices) - : m_rings(rings) - , m_slices(slices) - { - } - - QByteArray operator ()() Q_DECL_OVERRIDE - { - return createSphereMeshIndexData(m_rings, m_slices); - } - - bool operator ==(const QBufferFunctor &other) const Q_DECL_OVERRIDE - { - const SphereIndexDataFunctor *otherFunctor = functor_cast<SphereIndexDataFunctor>(&other); - if (otherFunctor != Q_NULLPTR) - return (otherFunctor->m_rings == m_rings && - otherFunctor->m_slices == m_slices); - return false; - } - - QT3D_FUNCTOR(SphereIndexDataFunctor) - -private: - int m_rings; - int m_slices; -}; - -class SphereGeometry : public QGeometry -{ - Q_OBJECT -public: - explicit SphereGeometry(QNode *parent = 0) - : QGeometry(parent) - , m_generateTangents(false) - , m_rings(16) - , m_slices(16) - , m_radius(1.0f) - , m_positionAttribute(new QAttribute(this)) - , m_normalAttribute(new QAttribute(this)) - , m_texCoordAttribute(new QAttribute(this)) - , m_tangentAttribute(new QAttribute(this)) - , m_indexAttribute(new QAttribute(this)) - , m_vertexBuffer(new QBuffer(QBuffer::VertexBuffer, this)) - , m_indexBuffer(new QBuffer(QBuffer::IndexBuffer, this)) - { - // vec3 pos, vec2 tex, vec3 normal, vec4 tangent - const quint32 elementSize = 3 + 2 + 3 + 4; - const quint32 stride = elementSize * sizeof(float); - const int nVerts = (m_slices + 1) * (m_rings + 1); - const int faces = (m_slices * 2) * (m_rings - 2) + (2 * m_slices); - - m_positionAttribute->setName(QAttribute::defaultPositionAttributeName()); - m_positionAttribute->setDataType(QAttribute::Float); - m_positionAttribute->setDataSize(3); - m_positionAttribute->setAttributeType(QAttribute::VertexAttribute); - m_positionAttribute->setBuffer(m_vertexBuffer); - m_positionAttribute->setByteStride(stride); - m_positionAttribute->setCount(nVerts); - - m_texCoordAttribute->setName(QAttribute::defaultTextureCoordinateAttributeName()); - m_texCoordAttribute->setDataType(QAttribute::Float); - m_texCoordAttribute->setDataSize(2); - m_texCoordAttribute->setAttributeType(QAttribute::VertexAttribute); - m_texCoordAttribute->setBuffer(m_vertexBuffer); - m_texCoordAttribute->setByteStride(stride); - m_texCoordAttribute->setByteOffset(3 * sizeof(float)); - m_texCoordAttribute->setCount(nVerts); - - m_normalAttribute->setName(QAttribute::defaultNormalAttributeName()); - m_normalAttribute->setDataType(QAttribute::Float); - m_normalAttribute->setDataSize(3); - m_normalAttribute->setAttributeType(QAttribute::VertexAttribute); - m_normalAttribute->setBuffer(m_vertexBuffer); - m_normalAttribute->setByteStride(stride); - m_normalAttribute->setByteOffset(5 * sizeof(float)); - m_normalAttribute->setCount(nVerts); - - m_tangentAttribute->setName(QAttribute::defaultTangentAttributeName()); - m_tangentAttribute->setDataType(QAttribute::Float); - m_tangentAttribute->setDataSize(4); - m_tangentAttribute->setAttributeType(QAttribute::VertexAttribute); - m_tangentAttribute->setBuffer(m_vertexBuffer); - m_tangentAttribute->setByteStride(stride); - m_tangentAttribute->setByteOffset(8 * sizeof(float)); - m_tangentAttribute->setCount(nVerts); - - m_indexAttribute->setAttributeType(QAttribute::IndexAttribute); - m_indexAttribute->setDataType(QAttribute::UnsignedShort); - m_indexAttribute->setBuffer(m_indexBuffer); - - m_indexAttribute->setCount(faces * 3); - - m_vertexBuffer->setBufferFunctor(QBufferFunctorPtr(new SphereVertexDataFunctor(m_rings, m_slices, m_radius))); - m_indexBuffer->setBufferFunctor(QBufferFunctorPtr(new SphereIndexDataFunctor(m_rings, m_slices))); - - addAttribute(m_positionAttribute); - addAttribute(m_texCoordAttribute); - addAttribute(m_normalAttribute); - if (m_generateTangents) - addAttribute(m_tangentAttribute); - addAttribute(m_indexAttribute); - } - - ~SphereGeometry() - { - QGeometry::cleanup(); - } - - void updateVertices() - { - const int nVerts = (m_slices + 1) * (m_rings + 1); - m_positionAttribute->setCount(nVerts); - m_texCoordAttribute->setCount(nVerts); - m_normalAttribute->setCount(nVerts); - m_tangentAttribute->setCount(nVerts); - - m_vertexBuffer->setBufferFunctor(QBufferFunctorPtr(new SphereVertexDataFunctor(m_rings, m_slices, m_radius))); - } - - void updateIndices() - { - const int faces = (m_slices * 2) * (m_rings - 2) + (2 * m_slices); - m_indexAttribute->setCount(faces * 3); - m_indexBuffer->setBufferFunctor(QBufferFunctorPtr(new SphereIndexDataFunctor(m_rings, m_slices))); - } - - void setRings(int rings) - { - if (rings != m_rings) { - m_rings = rings; - updateVertices(); - updateIndices(); - emit ringsChanged(); - } - } - - void setSlices(int slices) - { - if (slices != m_slices) { - m_slices = slices; - updateVertices(); - updateIndices(); - emit slicesChanged(); - } - } - - void setRadius(float radius) - { - if (radius != m_radius) { - m_radius = radius; - updateVertices(); - emit radiusChanged(); - } - } - - void setGenerateTangents(bool gen) - { - if (m_generateTangents != gen) { - if (m_generateTangents) - removeAttribute(m_tangentAttribute); - m_generateTangents = gen; - if (m_generateTangents) - addAttribute(m_tangentAttribute); - emit generateTangentsChanged(); - } - } - - bool generateTangents() const { return m_generateTangents; } - int rings() const { return m_rings; } - int slices() const { return m_slices; } - float radius() const { return m_radius; } - -Q_SIGNALS: - void radiusChanged(); - void ringsChanged(); - void slicesChanged(); - void generateTangentsChanged(); - -private: - bool m_generateTangents; - int m_rings; - int m_slices; - float m_radius; - QAttribute *m_positionAttribute; - QAttribute *m_normalAttribute; - QAttribute *m_texCoordAttribute; - QAttribute *m_tangentAttribute; - QAttribute *m_indexAttribute; - QBuffer *m_vertexBuffer; - QBuffer *m_indexBuffer; -}; - QSphereMesh::QSphereMesh(QNode *parent) : QGeometryRenderer(parent) { - SphereGeometry *geometry = new SphereGeometry(this); - QObject::connect(geometry, &SphereGeometry::radiusChanged, this, &QSphereMesh::radiusChanged); - QObject::connect(geometry, &SphereGeometry::ringsChanged, this, &QSphereMesh::ringsChanged); - QObject::connect(geometry, &SphereGeometry::slicesChanged, this, &QSphereMesh::slicesChanged); - QObject::connect(geometry, &SphereGeometry::generateTangentsChanged, this, &QSphereMesh::generateTangentsChanged); + QSphereGeometry *geometry = new QSphereGeometry(this); + QObject::connect(geometry, &QSphereGeometry::radiusChanged, this, &QSphereMesh::radiusChanged); + QObject::connect(geometry, &QSphereGeometry::ringsChanged, this, &QSphereMesh::ringsChanged); + QObject::connect(geometry, &QSphereGeometry::slicesChanged, this, &QSphereMesh::slicesChanged); + QObject::connect(geometry, &QSphereGeometry::generateTangentsChanged, this, &QSphereMesh::generateTangentsChanged); QGeometryRenderer::setGeometry(geometry); } @@ -407,46 +60,44 @@ QSphereMesh::~QSphereMesh() void QSphereMesh::setRings(int rings) { - static_cast<SphereGeometry *>(geometry())->setRings(rings); + static_cast<QSphereGeometry *>(geometry())->setRings(rings); } void QSphereMesh::setSlices(int slices) { - static_cast<SphereGeometry *>(geometry())->setSlices(slices); + static_cast<QSphereGeometry *>(geometry())->setSlices(slices); } void QSphereMesh::setRadius(float radius) { - static_cast<SphereGeometry *>(geometry())->setRadius(radius); + static_cast<QSphereGeometry *>(geometry())->setRadius(radius); } void QSphereMesh::setGenerateTangents(bool gen) { - static_cast<SphereGeometry *>(geometry())->setGenerateTangents(gen); + static_cast<QSphereGeometry *>(geometry())->setGenerateTangents(gen); } bool QSphereMesh::generateTangents() const { - return static_cast<SphereGeometry *>(geometry())->generateTangents(); + return static_cast<QSphereGeometry *>(geometry())->generateTangents(); } int QSphereMesh::rings() const { - return static_cast<SphereGeometry *>(geometry())->rings(); + return static_cast<QSphereGeometry *>(geometry())->rings(); } int QSphereMesh::slices() const { - return static_cast<SphereGeometry *>(geometry())->slices(); + return static_cast<QSphereGeometry *>(geometry())->slices(); } float QSphereMesh::radius() const { - return static_cast<SphereGeometry *>(geometry())->radius(); + return static_cast<QSphereGeometry *>(geometry())->radius(); } } //Qt3D QT_END_NAMESPACE - -#include "qspheremesh.moc" |