comparison: src/glrenderer.cpp
src/glrenderer.cpp
- changeset 1278
- 6e1ea24e5a5e
- parent 1251
- e75cc5bff076
- child 1306
- be85306198a2
equal
deleted
inserted
replaced
| 1277:821c30615069 | 1278:6e1ea24e5a5e |
|---|---|
| 699 m_config->setCamera(static_cast<int>(camera)); | 699 m_config->setCamera(static_cast<int>(camera)); |
| 700 } | 700 } |
| 701 } | 701 } |
| 702 | 702 |
| 703 /* | 703 /* |
| 704 * Resolves a pixel pointer to an RGB color. | |
| 705 * pixel[0..2] must be valid. | |
| 706 */ | |
| 707 static QRgb colorFromPixel(uint8_t* pixel) | |
| 708 { | |
| 709 return pixel[0] << 16 | pixel[1] << 8 | pixel[2] | 0xff000000; | |
| 710 } | |
| 711 | |
| 712 /* | |
| 704 * Returns the set of objects found in the specified pixel area. | 713 * Returns the set of objects found in the specified pixel area. |
| 705 */ | 714 */ |
| 706 QItemSelection GLRenderer::pick(const QRect& range) | 715 QItemSelection GLRenderer::pick(const QRect& range) |
| 707 { | 716 { |
| 708 makeCurrent(); | 717 makeCurrent(); |
| 731 pixelData.resize(4 * numpixels); | 740 pixelData.resize(4 * numpixels); |
| 732 | 741 |
| 733 // Read pixels from the color buffer. | 742 // Read pixels from the color buffer. |
| 734 glReadPixels(x0, height() - y1, areawidth, areaheight, GL_RGBA, GL_UNSIGNED_BYTE, pixelData.data()); | 743 glReadPixels(x0, height() - y1, areawidth, areaheight, GL_RGBA, GL_UNSIGNED_BYTE, pixelData.data()); |
| 735 | 744 |
| 736 QSet<qint32> ids; | 745 QSet<QRgb> pixelColors; |
| 737 | 746 |
| 738 // Go through each pixel read and add them to the selection. | 747 // Go through each pixel read and add them to the selection. |
| 739 // Each pixel maps to an LDObject index injectively. | 748 // Each pixel maps to an LDObject injectively. |
| 740 // Note: black is background, those indices are skipped. | 749 // Note: black is background, those indices are skipped. |
| 741 for (unsigned char *pixelCursor = pixelData.begin(); pixelCursor < pixelData.end(); pixelCursor += 4) | 750 for (int i : ::range(0, 4, pixelData.size() - 4)) |
| 742 { | 751 { |
| 743 qint32 id = pixelCursor[0] * 0x10000 + pixelCursor[1] * 0x100 + pixelCursor[2] * 0x1; | 752 QRgb color = colorFromPixel(&pixelData[i]); |
| 744 if (id != 0) | 753 |
| 745 ids.insert(id); | 754 if (color != BlackRgb) |
| 755 pixelColors.insert(color); | |
| 746 } | 756 } |
| 747 | 757 |
| 748 // For each index read, resolve the LDObject behind it and add it to the selection. | 758 // For each index read, resolve the LDObject behind it and add it to the selection. |
| 749 for (qint32 id : ids) | 759 for (QRgb color : pixelColors) |
| 750 { | 760 { |
| 751 QModelIndex index = m_model->indexFromId(id); | 761 QModelIndex index = m_model->objectByPickingColor(color); |
| 752 | 762 |
| 753 if (index.isValid()) | 763 if (index.isValid()) |
| 754 result.select(index, index); | 764 result.select(index, index); |
| 755 } | 765 } |
| 756 | 766 |
| 767 makeCurrent(); | 777 makeCurrent(); |
| 768 setPicking(true); | 778 setPicking(true); |
| 769 drawGLScene(); | 779 drawGLScene(); |
| 770 unsigned char pixel[4]; | 780 unsigned char pixel[4]; |
| 771 glReadPixels(mouseX, height() - mouseY, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixel); | 781 glReadPixels(mouseX, height() - mouseY, 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, pixel); |
| 772 QModelIndex result = m_model->indexFromId(pixel[0] * 0x10000 + pixel[1] * 0x100 + pixel[2]); | 782 QModelIndex result = m_model->objectByPickingColor(colorFromPixel(pixel)); |
| 773 setPicking(false); | 783 setPicking(false); |
| 774 repaint(); | 784 repaint(); |
| 775 return result; | 785 return result; |
| 776 } | 786 } |
| 777 | 787 |
| 836 void GLRenderer::zoomToFit() | 846 void GLRenderer::zoomToFit() |
| 837 { | 847 { |
| 838 currentCamera().setZoom(30.0f); | 848 currentCamera().setZoom(30.0f); |
| 839 bool lastfilled = false; | 849 bool lastfilled = false; |
| 840 bool firstrun = true; | 850 bool firstrun = true; |
| 841 enum { black = 0xFF000000 }; | |
| 842 bool inward = true; | 851 bool inward = true; |
| 843 int runaway = 50; | 852 int runaway = 50; |
| 844 | 853 |
| 845 // Use the pick list while drawing the scene, this way we can tell whether borders | 854 // Use the pick list while drawing the scene, this way we can tell whether borders |
| 846 // are background or not. | 855 // are background or not. |
| 863 bool filled = false; | 872 bool filled = false; |
| 864 | 873 |
| 865 // Check the top and bottom rows | 874 // Check the top and bottom rows |
| 866 for (int i = 0; i < image.width(); ++i) | 875 for (int i = 0; i < image.width(); ++i) |
| 867 { | 876 { |
| 868 if (image.pixel (i, 0) != black or image.pixel (i, height() - 1) != black) | 877 if (image.pixel (i, 0) != BlackRgb or image.pixel (i, height() - 1) != BlackRgb) |
| 869 { | 878 { |
| 870 filled = true; | 879 filled = true; |
| 871 break; | 880 break; |
| 872 } | 881 } |
| 873 } | 882 } |
| 875 // Left and right edges | 884 // Left and right edges |
| 876 if (filled == false) | 885 if (filled == false) |
| 877 { | 886 { |
| 878 for (int i = 0; i < image.height(); ++i) | 887 for (int i = 0; i < image.height(); ++i) |
| 879 { | 888 { |
| 880 if (image.pixel (0, i) != black or image.pixel (width() - 1, i) != black) | 889 if (image.pixel (0, i) != BlackRgb or image.pixel (width() - 1, i) != BlackRgb) |
| 881 { | 890 { |
| 882 filled = true; | 891 filled = true; |
| 883 break; | 892 break; |
| 884 } | 893 } |
| 885 } | 894 } |
| 937 if (not m_isCameraMoving and m_config->highlightObjectBelowCursor()) | 946 if (not m_isCameraMoving and m_config->highlightObjectBelowCursor()) |
| 938 { | 947 { |
| 939 setPicking (true); | 948 setPicking (true); |
| 940 drawGLScene(); | 949 drawGLScene(); |
| 941 setPicking (false); | 950 setPicking (false); |
| 942 | |
| 943 unsigned char pixel[4]; | 951 unsigned char pixel[4]; |
| 944 glReadPixels (m_mousePosition.x(), height() - m_mousePosition.y(), 1, 1, GL_RGBA, GL_UNSIGNED_BYTE, &pixel[0]); | 952 glReadPixels( |
| 945 qint32 id = pixel[0] * 0x10000 | pixel[1] * 0x100 | pixel[2]; | 953 m_mousePosition.x(), |
| 946 | 954 height() - m_mousePosition.y(), |
| 947 if (id != 0) | 955 1, |
| 948 newIndex = model()->indexFromId(id); | 956 1, |
| 957 GL_RGBA, | |
| 958 GL_UNSIGNED_BYTE, | |
| 959 &pixel[0] | |
| 960 ); | |
| 961 newIndex = model()->objectByPickingColor(colorFromPixel(pixel)); | |
| 949 } | 962 } |
| 950 | 963 |
| 951 if (newIndex != oldIndex) | 964 if (newIndex != oldIndex) |
| 952 { | 965 { |
| 953 m_objectAtCursor = newIndex; | 966 m_objectAtCursor = newIndex; |
