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74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
#include "blobshape2.hpp"
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#include "blobgroup2.hpp"
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#include <algorithm>
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#include <cmath>
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BlobShape2::BlobShape2(QQuickItem* parent) : QQuickItem(parent) {}
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void BlobShape2::setGroup(BlobGroup2* g) {
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if (m_group == g) return;
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if (m_group && isComponentComplete()) unregisterFromGroup();
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if (m_group) resetDeformMatrix();
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m_group = g;
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if (m_group && isComponentComplete()) registerWithGroup();
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emit groupChanged();
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if (m_group) m_group->markDirty();
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}
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void BlobShape2::setRadius(qreal r) {
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if (qFuzzyCompare(m_radius, r)) return;
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m_radius = r;
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emit radiusChanged();
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if (m_group) m_group->markDirty();
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}
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void BlobShape2::componentComplete() {
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QQuickItem::componentComplete();
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if (m_group) registerWithGroup();
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}
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void BlobShape2::geometryChange(
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const QRectF& newGeometry, const QRectF& oldGeometry) {
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QQuickItem::geometryChange(newGeometry, oldGeometry);
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updateCenteredDeformMatrix();
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if (m_group) m_group->markDirty();
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}
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void BlobShape2::updateCenteredDeformMatrix() {
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const auto cx = static_cast<float>(width()) * 0.5f;
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const auto cy = static_cast<float>(height()) * 0.5f;
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QMatrix4x4 result;
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result.translate(cx, cy);
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result *= m_deformMatrix;
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result.translate(-cx, -cy);
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if (m_centeredDeformMatrix != result) {
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m_centeredDeformMatrix = result;
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emit deformMatrixChanged();
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}
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}
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void BlobShape2::resetDeformMatrix() {
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m_deformMatrix = QMatrix4x4();
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emit rawDeformMatrixChanged();
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updateCenteredDeformMatrix();
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}
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void BlobShape2::cornerRadii(float out[4]) const {
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const auto maxR = static_cast<float>(std::min(width(), height())) * 0.5f;
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const auto r = std::min(static_cast<float>(m_radius), maxR);
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out[0] = r;
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out[1] = r;
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out[2] = r;
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out[3] = r;
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}
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void BlobShape2::registerWithGroup() {
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if (m_group) m_group->addShape(this);
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}
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void BlobShape2::unregisterFromGroup() {
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if (m_group) m_group->removeShape(this);
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}
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