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++ // Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++
++ #include "pointsvisitor_p.h"
++ #include <Qt3DCore/qentity.h>
++ #include <Qt3DRender/qgeometryrenderer.h>
++ #include <Qt3DRender/private/managers_p.h>
++ #include <Qt3DRender/private/nodemanagers_p.h>
++ #include <Qt3DRender/private/buffermanager_p.h>
++ #include <Qt3DRender/private/geometryrenderer_p.h>
++ #include <Qt3DRender/private/geometryrenderermanager_p.h>
++ #include <Qt3DRender/private/geometry_p.h>
++ #include <Qt3DRender/private/attribute_p.h>
++ #include <Qt3DRender/private/buffer_p.h>
++ #include <Qt3DRender/private/trianglesvisitor_p.h>
++ #include <Qt3DRender/private/visitorutils_p.h>
++
++ QT_BEGIN_NAMESPACE
++
++ namespace Qt3DRender {
++
++ namespace Render {
++
++ namespace {
++
++ // indices, vertices are already offset
++ template<typename Index, typename Vertex>
++ void traverseCoordinatesIndexed(Index *indices,
++ Vertex *vertices,
++ const BufferInfo &indexInfo,
++ const BufferInfo &vertexInfo,
++ PointsVisitor *visitor)
++ {
++ uint i = 0;
++ const uint verticesStride = vertexInfo.byteStride / sizeof(Vertex);
++ const uint maxVerticesDataSize = qMin(vertexInfo.dataSize, 3U);
++
++ uint ndx;
++ Vector3D abc;
++ while (i < indexInfo.count) {
++ ndx = indices[i];
++ const uint idx = ndx * verticesStride;
++ for (uint j = 0; j < maxVerticesDataSize; ++j) {
++ abc[j] = vertices[idx + j];
++ }
++ visitor->visit(ndx, abc);
++ ++i;
++ }
++ }
++
++ // vertices are already offset
++ template<typename Vertex>
++ void traverseCoordinates(Vertex *vertices,
++ const BufferInfo &vertexInfo,
++ PointsVisitor *visitor)
++ {
++ const uint verticesStride = vertexInfo.byteStride / sizeof(Vertex);
++ const uint maxVerticesDataSize = qMin(vertexInfo.dataSize, 3U);
++
++ uint ndx = 0;
++ Vector3D abc;
++ while (ndx < vertexInfo.count) {
++ const uint idx = ndx * verticesStride;
++ for (uint j = 0; j < maxVerticesDataSize; ++j)
++ abc[j] = vertices[idx + j];
++ visitor->visit(ndx, abc);
++ ++ndx;
++ }
++ }
++
++ template<typename Index, typename Visitor>
++ struct IndexedVertexExecutor
++ {
++ template<typename Vertex>
++ void operator ()(const BufferInfo &vertexInfo, Vertex * vertices)
++ {
++ traverseCoordinatesIndexed(m_indices, vertices, m_indexBufferInfo, vertexInfo, m_visitor);
++ }
++
++ BufferInfo m_indexBufferInfo;
++ Index *m_indices;
++ Qt3DRender::QGeometryRenderer::PrimitiveType m_primitiveType;
++ Visitor* m_visitor;
++ };
++
++ template<typename Visitor>
++ struct IndexExecutor
++ {
++ template<typename Index>
++ void operator ()( const BufferInfo &indexInfo, Index *indices)
++ {
++ IndexedVertexExecutor<Index, Visitor> exec;
++ exec.m_primitiveType = m_primitiveType;
++ exec.m_indices = indices;
++ exec.m_indexBufferInfo = indexInfo;
++ exec.m_visitor = m_visitor;
++ Qt3DRender::Render::Visitor::processBuffer(m_vertexBufferInfo, exec);
++ }
++
++ BufferInfo m_vertexBufferInfo;
++ Qt3DRender::QGeometryRenderer::PrimitiveType m_primitiveType;
++ Visitor* m_visitor;
++ };
++
++ template<typename Visitor>
++ struct VertexExecutor
++ {
++ template<typename Vertex>
++ void operator ()(const BufferInfo &vertexInfo, Vertex *vertices)
++ {
++ switch (m_primitiveType) {
++ case Qt3DRender::QGeometryRenderer::Points:
++ traverseCoordinates(vertices, vertexInfo, m_visitor);
++ return;
++ default:
++ Q_UNREACHABLE_RETURN();
++ }
++ }
++
++ Qt3DRender::QGeometryRenderer::PrimitiveType m_primitiveType;
++ Visitor* m_visitor;
++ };
++
++ } // anonymous
++
++
++ PointsVisitor::~PointsVisitor()
++ {
++
++ }
++
++ void PointsVisitor::apply(const Qt3DCore::QEntity *entity)
++ {
++ GeometryRenderer *renderer = m_manager->geometryRendererManager()->lookupResource(entity->id());
++ apply(renderer, entity->id());
++ }
++
++ void PointsVisitor::apply(const GeometryRenderer *renderer, const Qt3DCore::QNodeId id)
++ {
++ m_nodeId = id;
++ if (renderer && renderer->instanceCount() == 1) {
++ Visitor::visitPrimitives<GeometryRenderer, VertexExecutor<PointsVisitor>,
++ IndexExecutor<PointsVisitor>, PointsVisitor>(m_manager, renderer, this);
++ }
++ }
++
++ void PointsVisitor::apply(const PickingProxy *proxy, const Qt3DCore::QNodeId id)
++ {
++ m_nodeId = id;
++ if (proxy && proxy->instanceCount() == 1) {
++ Visitor::visitPrimitives<PickingProxy, VertexExecutor<PointsVisitor>,
++ IndexExecutor<PointsVisitor>, PointsVisitor>(m_manager, proxy, this);
++ }
++ }
++
++ } // namespace Render
++
++ } // namespace Qt3DRender
++
++ QT_END_NAMESPACE