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add right click panning to the view

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This commit is contained in:
papush! 2021-11-27 11:38:14 +01:00
parent 24dabed48c
commit 61082c8331
2 changed files with 18 additions and 9 deletions
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16
src/mesh_viewer.cpp
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@ -13,7 +13,7 @@ MeshViewer::MeshViewer(QWidget *parent) : QOpenGLWidget(parent) {
void MeshViewer::updateViewMatrix() {
view = trans * rot;
view = trans * zoom * rot;
}
@ -119,8 +119,9 @@ void MeshViewer::updateForReal() {
void MeshViewer::mousePressEvent(QMouseEvent *e) {
if (e->button() == Qt::MiddleButton) {
if (e->button() & Qt::MiddleButton || e->button() & Qt::RightButton) {
mouse_pos = e->pos();
trans_start = trans;
} else if (e->button() == Qt::LeftButton) {
float x = e->x();
float y = height() - e->y();
@ -153,12 +154,19 @@ void MeshViewer::mouseMoveEvent(QMouseEvent *e) {
updateViewMatrix();
update();
}
if (e->buttons() & Qt::RightButton) {
trans = trans_start;
trans(0, 3) += (e->pos() - mouse_pos).x() / 1000.;
trans(1, 3) -= (e->pos() - mouse_pos).y() / 1000.;
updateViewMatrix();
update();
}
}
void MeshViewer::wheelEvent(QWheelEvent *e) {
trans(2, 3) -= e->angleDelta().y() / 1000. * trans(2, 3);
trans.optimize();
zoom(2, 3) -= e->angleDelta().y() / 1000. * zoom(2, 3);
zoom.optimize();
updateViewMatrix();
update();
}

11
src/mesh_viewer.h
View File

@ -27,12 +27,13 @@ class MeshViewer : public QOpenGLWidget {
std::list<MeshView> meshes;
QOpenGLShaderProgram program;
QMatrix4x4 proj;
QMatrix4x4 trans = QMatrix4x4(1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, -1,
0, 0, 0, 1);
QMatrix4x4 zoom = QMatrix4x4(1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, -1,
0, 0, 0, 1);
QMatrix4x4 trans, trans_start;
QMatrix4x4 rot, rot_start;
QMatrix4x4 view = trans * rot;
QMatrix4x4 view = trans * zoom * rot;
QPoint mouse_pos;
void updateViewMatrix();
bool is_initialized = false;