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SIA_Projet_2/bvh_gui/.qmake.stash

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+QMAKE_CXX.QT_COMPILER_STDCXX = 201703L
+QMAKE_CXX.QMAKE_GCC_MAJOR_VERSION = 11
+QMAKE_CXX.QMAKE_GCC_MINOR_VERSION = 3
+QMAKE_CXX.QMAKE_GCC_PATCH_VERSION = 0
+QMAKE_CXX.COMPILER_MACROS = \
+    QT_COMPILER_STDCXX \
+    QMAKE_GCC_MAJOR_VERSION \
+    QMAKE_GCC_MINOR_VERSION \
+    QMAKE_GCC_PATCH_VERSION
+QMAKE_CXX.INCDIRS = \
+    /usr/include/c++/11 \
+    /usr/include/x86_64-linux-gnu/c++/11 \
+    /usr/include/c++/11/backward \
+    /usr/lib/gcc/x86_64-linux-gnu/11/include \
+    /usr/local/include \
+    /usr/include/x86_64-linux-gnu \
+    /usr/include
+QMAKE_CXX.LIBDIRS = \
+    /usr/lib/gcc/x86_64-linux-gnu/11 \
+    /usr/lib/x86_64-linux-gnu \
+    /usr/lib \
+    /lib/x86_64-linux-gnu \
+    /lib

SIA_Projet_2/bvh_gui/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+cmake_minimum_required(VERSION 3.16)
+project(cube LANGUAGES CXX)
+
+if(NOT DEFINED INSTALL_EXAMPLESDIR)
+    set(INSTALL_EXAMPLESDIR "examples")
+endif()
+
+set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/opengl/cube")
+
+find_package(Qt6 REQUIRED COMPONENTS Core Gui OpenGL OpenGLWidgets Widgets)
+
+qt_standard_project_setup()
+
+qt_add_executable(cube
+    geometryengine.cpp geometryengine.h
+    main.cpp
+    mainwidget.cpp mainwidget.h
+)
+
+set_target_properties(cube PROPERTIES
+    WIN32_EXECUTABLE TRUE
+    MACOSX_BUNDLE TRUE
+)
+
+target_link_libraries(cube PRIVATE
+    Qt6::Core
+    Qt6::Gui
+    Qt6::OpenGL
+    Qt6::OpenGLWidgets
+    Qt6::Widgets
+)
+
+# Resources:
+set(shaders_resource_files
+    "fshader.glsl"
+    "vshader.glsl"
+)
+
+qt6_add_resources(cube "shaders"
+    PREFIX
+        "/"
+    FILES
+        ${shaders_resource_files}
+)
+
+set(textures_resource_files
+    "cube.png"
+)
+
+qt6_add_resources(cube "textures"
+    PREFIX
+        "/"
+    FILES
+        ${textures_resource_files}
+)
+
+install(TARGETS cube
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+    LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
+)

SIA_Projet_2/bvh_gui/cube.pro

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+QT += core gui widgets opengl
+
+TARGET = cube
+TEMPLATE = app
+
+SOURCES += main.cpp
+
+SOURCES += \
+    mainwidget.cpp \
+    geometryengine.cpp
+
+HEADERS += \
+    mainwidget.h \
+    geometryengine.h
+
+RESOURCES += \
+    shaders.qrc \
+    textures.qrc
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/opengl/cube
+INSTALLS += target

SIA_Projet_2/bvh_gui/fshader.glsl

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+#ifdef GL_ES
+// Set default precision to medium
+precision mediump int;
+precision mediump float;
+#endif
+
+uniform sampler2D texture;
+
+varying vec2 v_texcoord;
+
+//! [0]
+void main()
+{
+    // Set fragment color from texture
+    gl_FragColor = texture2D(texture, v_texcoord);
+}
+//! [0]
+

SIA_Projet_2/bvh_gui/geometryengine.cpp

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#include "geometryengine.h"
+#include "../joint.h"
+
+#include <QVector2D>
+#include <QVector3D>
+
+struct VertexData
+{
+    QVector3D position;
+    QVector2D texCoord;
+};
+
+//! [0]
+GeometryEngine::GeometryEngine(Joint *root)
+    : indexBuf(QOpenGLBuffer::IndexBuffer)
+{
+    initializeOpenGLFunctions();
+
+    // Generate 2 VBOs
+    arrayBuf.create();
+    indexBuf.create();
+
+    // Initializes cube geometry and transfers it to VBOs
+    //initCubeGeometry();
+    initLineGeometry(root);
+}
+
+GeometryEngine::~GeometryEngine()
+{
+    arrayBuf.destroy();
+    indexBuf.destroy();
+}
+//! [0]
+
+void GeometryEngine::initCubeGeometry()
+{
+    // For cube we would need only 8 vertices but we have to
+    // duplicate vertex for each face because texture coordinate
+    // is different.
+    VertexData vertices[] = {
+        // Vertex data for face 0
+        {QVector3D(-1.0f, -1.0f,  1.0f), QVector2D(0.0f, 0.0f)},  // v0
+        {QVector3D( 1.0f, -1.0f,  1.0f), QVector2D(0.33f, 0.0f)}, // v1
+        {QVector3D(-1.0f,  1.0f,  1.0f), QVector2D(0.0f, 0.5f)},  // v2
+        {QVector3D( 1.0f,  1.0f,  1.0f), QVector2D(0.33f, 0.5f)}, // v3
+
+        // Vertex data for face 1
+        {QVector3D( 1.0f, -1.0f,  1.0f), QVector2D( 0.0f, 0.5f)}, // v4
+        {QVector3D( 1.0f, -1.0f, -1.0f), QVector2D(0.33f, 0.5f)}, // v5
+        {QVector3D( 1.0f,  1.0f,  1.0f), QVector2D(0.0f, 1.0f)},  // v6
+        {QVector3D( 1.0f,  1.0f, -1.0f), QVector2D(0.33f, 1.0f)}, // v7
+
+        // Vertex data for face 2
+        {QVector3D( 1.0f, -1.0f, -1.0f), QVector2D(0.66f, 0.5f)}, // v8
+        {QVector3D(-1.0f, -1.0f, -1.0f), QVector2D(1.0f, 0.5f)},  // v9
+        {QVector3D( 1.0f,  1.0f, -1.0f), QVector2D(0.66f, 1.0f)}, // v10
+        {QVector3D(-1.0f,  1.0f, -1.0f), QVector2D(1.0f, 1.0f)},  // v11
+
+        // Vertex data for face 3
+        {QVector3D(-1.0f, -1.0f, -1.0f), QVector2D(0.66f, 0.0f)}, // v12
+        {QVector3D(-1.0f, -1.0f,  1.0f), QVector2D(1.0f, 0.0f)},  // v13
+        {QVector3D(-1.0f,  1.0f, -1.0f), QVector2D(0.66f, 0.5f)}, // v14
+        {QVector3D(-1.0f,  1.0f,  1.0f), QVector2D(1.0f, 0.5f)},  // v15
+
+        // Vertex data for face 4
+        {QVector3D(-1.0f, -1.0f, -1.0f), QVector2D(0.33f, 0.0f)}, // v16
+        {QVector3D( 1.0f, -1.0f, -1.0f), QVector2D(0.66f, 0.0f)}, // v17
+        {QVector3D(-1.0f, -1.0f,  1.0f), QVector2D(0.33f, 0.5f)}, // v18
+        {QVector3D( 1.0f, -1.0f,  1.0f), QVector2D(0.66f, 0.5f)}, // v19
+
+        // Vertex data for face 5
+        {QVector3D(-1.0f,  1.0f,  1.0f), QVector2D(0.33f, 0.5f)}, // v20
+        {QVector3D( 1.0f,  1.0f,  1.0f), QVector2D(0.66f, 0.5f)}, // v21
+        {QVector3D(-1.0f,  1.0f, -1.0f), QVector2D(0.33f, 1.0f)}, // v22
+        {QVector3D( 1.0f,  1.0f, -1.0f), QVector2D(0.66f, 1.0f)}  // v23
+    };
+
+    // Indices for drawing cube faces using triangle strips.
+    // Triangle strips can be connected by duplicating indices
+    // between the strips. If connecting strips have opposite
+    // vertex order then last index of the first strip and first
+    // index of the second strip needs to be duplicated. If
+    // connecting strips have same vertex order then only last
+    // index of the first strip needs to be duplicated.
+    GLushort indices[] = {
+         0,  1,  2,  3,  3,     // Face 0 - triangle strip ( v0,  v1,  v2,  v3)
+         4,  4,  5,  6,  7,  7, // Face 1 - triangle strip ( v4,  v5,  v6,  v7)
+         8,  8,  9, 10, 11, 11, // Face 2 - triangle strip ( v8,  v9, v10, v11)
+        12, 12, 13, 14, 15, 15, // Face 3 - triangle strip (v12, v13, v14, v15)
+        16, 16, 17, 18, 19, 19, // Face 4 - triangle strip (v16, v17, v18, v19)
+        20, 20, 21, 22, 23      // Face 5 - triangle strip (v20, v21, v22, v23)
+    };
+
+//! [1]
+    // Transfer vertex data to VBO 0
+    arrayBuf.bind();
+    arrayBuf.allocate(vertices, 24 * sizeof(VertexData));
+
+    // Transfer index data to VBO 1
+    indexBuf.bind();
+    indexBuf.allocate(indices, 34 * sizeof(GLushort));
+//! [1]
+}
+
+double divider = 300.0;
+
+void getPos(Joint *jnt, std::vector<VertexData> *vec){
+    if(jnt->_children.empty() == false){
+        for(Joint *child : jnt->_children){
+            getPos(child, vec);
+            vec->push_back({QVector3D(jnt->_curTx/divider, jnt->_curTy/divider,  jnt->_curTz/divider), QVector2D(0.0f, 0.0f)});
+            vec->push_back({QVector3D(child->_curTx/divider, child->_curTy/divider,  child->_curTz/divider), QVector2D(0.0f, 0.0f)});
+        }
+    }
+}
+
+void GeometryEngine::initLineGeometry(Joint *root)
+{
+    std::vector<VertexData> vec; 
+    getPos(root, &vec);
+    VertexData *vertices = &vec[0];
+    int lenVec = vec.size();
+
+    std::cout << lenVec << std::endl;
+
+    std::vector<GLushort> indVec;
+    for(int i = 0 ; i < lenVec-1 ; i++){
+        indVec.push_back(i);
+        indVec.push_back(i+1);
+    }
+    GLushort *indices = &indVec[0];
+
+    for(VertexData v : vec){
+        std::cout << v.position.x() << " " << v.position.y() << " " << v.position.z() << std::endl;
+    }
+
+    // Transfer vertex data to VBO 0
+    arrayBuf.bind();
+    arrayBuf.allocate(vertices, lenVec * sizeof(VertexData));
+
+    // Transfer index data to VBO 1
+    indexBuf.bind();
+    indexBuf.allocate(indices, 2 * (lenVec-1) * sizeof(GLushort));
+
+    lenPts = lenVec;
+}
+
+//! [2]
+void GeometryEngine::drawCubeGeometry(QOpenGLShaderProgram *program)
+{
+    // Tell OpenGL which VBOs to use
+    arrayBuf.bind();
+    indexBuf.bind();
+
+    // Offset for position
+    quintptr offset = 0;
+
+    // Tell OpenGL programmable pipeline how to locate vertex position data
+    int vertexLocation = program->attributeLocation("a_position");
+    program->enableAttributeArray(vertexLocation);
+    program->setAttributeBuffer(vertexLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
+
+    // Offset for texture coordinate
+    offset += sizeof(QVector3D);
+
+    // Tell OpenGL programmable pipeline how to locate vertex texture coordinate data
+    int texcoordLocation = program->attributeLocation("a_texcoord");
+    program->enableAttributeArray(texcoordLocation);
+    program->setAttributeBuffer(texcoordLocation, GL_FLOAT, offset, 2, sizeof(VertexData));
+
+    // Draw cube geometry using indices from VBO 1
+    glDrawElements(GL_TRIANGLE_STRIP, 34, GL_UNSIGNED_SHORT, nullptr);
+}
+//! [2]
+
+void GeometryEngine::drawLineGeometry(QOpenGLShaderProgram *program)
+{
+    // Tell OpenGL which VBOs to use
+    arrayBuf.bind();
+    indexBuf.bind();
+
+    // Offset for position
+    quintptr offset = 0;
+
+    // Tell OpenGL programmable pipeline how to locate vertex position data
+    int vertexLocation = program->attributeLocation("a_position");
+    program->enableAttributeArray(vertexLocation);
+    program->setAttributeBuffer(vertexLocation, GL_FLOAT, offset, 3, sizeof(VertexData));
+
+    // Offset for texture coordinate
+    offset += sizeof(QVector3D);
+
+    // Tell OpenGL programmable pipeline how to locate vertex texture coordinate data
+    int texcoordLocation = program->attributeLocation("a_texcoord");
+    program->enableAttributeArray(texcoordLocation);
+    program->setAttributeBuffer(texcoordLocation, GL_FLOAT, offset, 2, sizeof(VertexData));
+
+    // Draw cube geometry using indices from VBO 1
+    glDrawElements(GL_LINE_STRIP, (lenPts-1) * 2, GL_UNSIGNED_SHORT, nullptr);
+}

SIA_Projet_2/bvh_gui/geometryengine.h

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+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#ifndef GEOMETRYENGINE_H
+#define GEOMETRYENGINE_H
+
+#include <QOpenGLFunctions>
+#include <QOpenGLShaderProgram>
+#include <QOpenGLBuffer>
+
+#include "../joint.h"
+
+class GeometryEngine : protected QOpenGLFunctions
+{
+public:
+    GeometryEngine(Joint *root);
+    virtual ~GeometryEngine();
+
+    void drawCubeGeometry(QOpenGLShaderProgram *program);
+    void drawLineGeometry(QOpenGLShaderProgram *program);
+
+    int lenPts;
+
+private:
+    void initCubeGeometry();
+    void initLineGeometry(Joint *root);
+
+    QOpenGLBuffer arrayBuf;
+    QOpenGLBuffer indexBuf;
+};
+
+#endif // GEOMETRYENGINE_H