#include <QMouseEvent>
-#include <QDebug>
#include <cmath>
#include "glmesh.h"
#include "mesh.h"
-Canvas::Canvas(const QGLFormat& format, QWidget *parent)
- : QGLWidget(format, parent), mesh(NULL),
- scale(1), zoom(1), tilt(90), yaw(0), status(" ")
+Canvas::Canvas(const QSurfaceFormat& format, QWidget *parent)
+ : QOpenGLWidget(parent), mesh(nullptr),
+ scale(1), zoom(1), tilt(90), yaw(0),
+ perspective(0.25), anim(this, "perspective"), status(" ")
{
- // Nothing to do here
+ setFormat(format);
+ QFile styleFile(":/qt/style.qss");
+ styleFile.open( QFile::ReadOnly );
+ setStyleSheet(styleFile.readAll());
+
+ anim.setDuration(100);
}
Canvas::~Canvas()
{
- delete mesh;
+ makeCurrent();
+ delete mesh;
+ doneCurrent();
+}
+
+void Canvas::view_anim(float v)
+{
+ anim.setStartValue(perspective);
+ anim.setEndValue(v);
+ anim.start();
}
-void Canvas::load_mesh(Mesh* m)
+void Canvas::view_orthographic()
+{
+ view_anim(0);
+}
+
+void Canvas::view_perspective()
+{
+ view_anim(0.25);
+}
+
+void Canvas::draw_shaded()
+{
+ set_drawMode(0);
+}
+
+void Canvas::draw_wireframe()
+{
+ set_drawMode(1);
+}
+
+void Canvas::load_mesh(Mesh* m, bool is_reload)
{
mesh = new GLMesh(m);
- center = QVector3D(m->xmin() + m->xmax(),
- m->ymin() + m->ymax(),
- m->zmin() + m->zmax()) / 2;
- scale = 2 / sqrt(
- pow(m->xmax() - m->xmin(), 2) +
- pow(m->ymax() - m->ymin(), 2) +
- pow(m->zmax() - m->zmin(), 2));
-
- // Reset other camera parameters
- zoom = 1;
- yaw = 0;
- tilt = 90;
+
+ if (!is_reload)
+ {
+ QVector3D lower(m->xmin(), m->ymin(), m->zmin());
+ QVector3D upper(m->xmax(), m->ymax(), m->zmax());
+ center = (lower + upper) / 2;
+ scale = 2 / (upper - lower).length();
+
+ // Reset other camera parameters
+ zoom = 1;
+ yaw = 0;
+ tilt = 90;
+ }
update();
update();
}
+void Canvas::set_perspective(float p)
+{
+ perspective = p;
+ update();
+}
+
+void Canvas::set_drawMode(int mode)
+{
+ drawMode = mode;
+ update();
+}
+
void Canvas::clear_status()
{
status = "";
void Canvas::initializeGL()
{
- initializeGLFunctions();
+ initializeOpenGLFunctions();
- mesh_shader.addShaderFromSourceFile(QGLShader::Vertex, ":/gl/mesh.vert");
- mesh_shader.addShaderFromSourceFile(QGLShader::Fragment, ":/gl/mesh.frag");
+ mesh_shader.addShaderFromSourceFile(QOpenGLShader::Vertex, ":/gl/mesh.vert");
+ mesh_shader.addShaderFromSourceFile(QOpenGLShader::Fragment, ":/gl/mesh.frag");
mesh_shader.link();
+ mesh_wireframe_shader.addShaderFromSourceFile(QOpenGLShader::Vertex, ":/gl/mesh.vert");
+ mesh_wireframe_shader.addShaderFromSourceFile(QOpenGLShader::Fragment, ":/gl/mesh_wireframe.frag");
+ mesh_wireframe_shader.link();
backdrop = new Backdrop();
}
-void Canvas::paintEvent(QPaintEvent *event)
-{
- Q_UNUSED(event);
- glClearColor(0.0, 0.0, 0.0, 0.0);
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- glEnable(GL_DEPTH_TEST);
+void Canvas::paintGL()
+{
+ glClearColor(0.0, 0.0, 0.0, 0.0);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ glEnable(GL_DEPTH_TEST);
- backdrop->draw();
- if (mesh) draw_mesh();
+ backdrop->draw();
+ if (mesh) draw_mesh();
- if (status.isNull()) return;
+ if (status.isNull()) return;
- QPainter painter(this);
- painter.setRenderHint(QPainter::Antialiasing);
- painter.drawText(10, height() - 10, status);
+ QPainter painter(this);
+ painter.setRenderHint(QPainter::Antialiasing);
+ painter.drawText(10, height() - 10, status);
}
-
void Canvas::draw_mesh()
{
- mesh_shader.bind();
+ QOpenGLShaderProgram* selected_mesh_shader = NULL;
+ // Set gl draw mode
+ if(drawMode == 1)
+ {
+ selected_mesh_shader = &mesh_wireframe_shader;
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ }
+ else
+ {
+ selected_mesh_shader = &mesh_shader;
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ }
+
+ selected_mesh_shader->bind();
// Load the transform and view matrices into the shader
glUniformMatrix4fv(
- mesh_shader.uniformLocation("transform_matrix"),
+ selected_mesh_shader->uniformLocation("transform_matrix"),
1, GL_FALSE, transform_matrix().data());
glUniformMatrix4fv(
- mesh_shader.uniformLocation("view_matrix"),
+ selected_mesh_shader->uniformLocation("view_matrix"),
1, GL_FALSE, view_matrix().data());
// Compensate for z-flattening when zooming
- glUniform1f(mesh_shader.uniformLocation("zoom"), 1/zoom);
+ glUniform1f(selected_mesh_shader->uniformLocation("zoom"), 1/zoom);
// Find and enable the attribute location for vertex position
- const GLuint vp = mesh_shader.attributeLocation("vertex_position");
+ const GLuint vp = selected_mesh_shader->attributeLocation("vertex_position");
glEnableVertexAttribArray(vp);
// Then draw the mesh with that vertex position
mesh->draw(vp);
+ // Reset draw mode for the background and anything else that needs to be drawn
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
// Clean up state machine
glDisableVertexAttribArray(vp);
- mesh_shader.release();
+ selected_mesh_shader->release();
}
QMatrix4x4 Canvas::transform_matrix() const
QMatrix4x4 m;
m.rotate(tilt, QVector3D(1, 0, 0));
m.rotate(yaw, QVector3D(0, 0, 1));
- m.scale(scale);
+ m.scale(-scale, scale, -scale);
m.translate(-center);
return m;
}
m.scale(-1, width() / float(height()), 0.5);
}
m.scale(zoom, zoom, 1);
+ m(3, 2) = perspective;
return m;
}
auto p = event->pos();
auto d = p - mouse_pos;
+
if (event->buttons() & Qt::LeftButton)
{
yaw = fmod(yaw - d.x(), 360);
- tilt = fmax(0, fmin(180, tilt - d.y()));
+ tilt = fmod(tilt - d.y(), 360);
update();
}
else if (event->buttons() & Qt::RightButton)
center += b - a;
update();
}
+
+void Canvas::resizeGL(int width, int height)
+{
+ glViewport(0, 0, width, height);
+}
projects / fstl / blobdiff