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| TCamera::TCamera() |
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| : m_size(16, 9), |
| m_res(1920, 1080), |
| m_xPrevalence(true) {} |
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| void TCamera::setSize(const TDimensionD &size, bool preserveDpi, |
| bool preserveAR) { |
| double currAR = getAspectRatio(); |
| TPointD currDpi = getDpi(); |
| m_size.lx = size.lx; |
| if (preserveAR) |
| m_size.ly = m_size.lx / currAR; |
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| else |
| m_size.ly = size.ly; |
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| if (!preserveDpi) return; |
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| m_res.lx = troundp(currDpi.x * m_size.lx); |
| m_res.ly = troundp(currDpi.y * m_size.ly); |
| m_size.lx = m_res.lx / currDpi.x; |
| if (preserveAR) |
| { |
| double aux = m_size.lx / currAR - m_res.ly / currDpi.y; |
| m_size.ly = m_size.lx / currAR; |
| } else |
| m_size.ly = m_res.ly / currDpi.y; |
| } |
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| double TCamera::getAspectRatio() const { return m_size.lx / m_size.ly; } |
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| void TCamera::setRes(const TDimension &res) { |
| assert(res.lx > 0); |
| assert(res.ly > 0); |
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| if (m_res != res) { |
| m_res = res; |
| m_interestRect = TRect(); |
| } |
| } |
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| TPointD TCamera::getDpi() const { |
| TPointD dpi; |
| if (m_size.lx > 0 && m_size.ly > 0) { |
| dpi.x = m_res.lx / m_size.lx; |
| dpi.y = m_res.ly / m_size.ly; |
| } |
| return dpi; |
| } |
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| bool TCamera::isPixelSquared() const { |
| return areAlmostEqual(m_res.lx * m_size.ly, m_res.ly * m_size.lx); |
| } |
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| TAffine TCamera::getStageToCameraRef() const { |
| return TAffine(m_res.lx / (Stage::inch * m_size.lx), 0, 0.5 * m_res.lx, 0, |
| m_res.ly / (Stage::inch * m_size.ly), 0.5 * m_res.ly); |
| } |
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| TAffine TCamera::getCameraToStageRef() const { |
| const double factor = Stage::inch; |
| |
| TDimensionD cameraSize = getSize(); |
| cameraSize.lx *= factor; |
| cameraSize.ly *= factor; |
| TPointD center(0.5 * cameraSize.lx, 0.5 * cameraSize.ly); |
| |
| return TAffine(factor * m_size.lx / (double)m_res.lx, 0, -center.x, 0, |
| factor * m_size.ly / (double)m_res.ly, -center.y); |
| } |
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| TRectD TCamera::getStageRect() const { |
| TDimensionD cameraSize = getSize(); |
| const double factor = Stage::inch; |
| cameraSize.lx *= factor; |
| cameraSize.ly *= factor; |
| TRectD rect(cameraSize); |
| rect -= 0.5 * (rect.getP00() + rect.getP11()); |
| return rect; |
| } |
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| void TCamera::setInterestRect(const TRect &rect) { |
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| m_interestRect.x0 = std::max(rect.x0, 0); |
| m_interestRect.y0 = std::max(rect.y0, 0); |
| m_interestRect.x1 = std::min(rect.x1, m_res.lx - 1); |
| m_interestRect.y1 = std::min(rect.y1, m_res.ly - 1); |
| } |
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| TRectD TCamera::getInterestStageRect() const { |
| return getCameraToStageRef() * TRectD(m_interestRect.x0, m_interestRect.y0, |
| m_interestRect.x1 + 1, |
| m_interestRect.y1 + 1); |
| } |
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| void TCamera::setInterestStageRect(const TRectD &rect) { |
| TRectD cameraInterestRectD(getStageToCameraRef() * rect); |
| |
| setInterestRect(TRect( |
| tfloor(cameraInterestRectD.x0), tfloor(cameraInterestRectD.y0), |
| tceil(cameraInterestRectD.x1) - 1, tceil(cameraInterestRectD.y1) - 1)); |
| } |
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| void TCamera::saveData(TOStream &os) const { |
| os.child("cameraSize") << m_size.lx << m_size.ly; |
| os.child("cameraRes") << m_res.lx << m_res.ly; |
| os.child("cameraXPrevalence") << (int)m_xPrevalence; |
| os.child("interestRect") << m_interestRect.x0 << m_interestRect.y0 |
| << m_interestRect.x1 << m_interestRect.y1; |
| } |
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| void TCamera::loadData(TIStream &is) { |
| std::string tagName; |
| while (is.matchTag(tagName)) { |
| if (tagName == "cameraSize" || tagName == "size") |
| is >> m_size.lx >> m_size.ly; |
| else if (tagName == "cameraRes" || tagName == "res") |
| is >> m_res.lx >> m_res.ly; |
| else if (tagName == "cameraXPrevalence") { |
| int xPrevalence; |
| is >> xPrevalence; |
| m_xPrevalence = (bool)xPrevalence; |
| } else if (tagName == "interestRect") { |
| is >> m_interestRect.x0 >> m_interestRect.y0 >> m_interestRect.x1 >> |
| m_interestRect.y1; |
| } else |
| throw TException("TCamera::loadData. unexpected tag: " + tagName); |
| is.matchEndTag(); |
| } |
| } |
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