comparison: src/glRenderer.cpp
src/glRenderer.cpp
- changeset 1135
- 8e0691be0b6f
- parent 1134
- daa9808d626e
equal
deleted
inserted
replaced
| 1134:daa9808d626e | 1135:8e0691be0b6f |
|---|---|
| 711 pixelData.resize(4 * numpixels); | 711 pixelData.resize(4 * numpixels); |
| 712 | 712 |
| 713 // Read pixels from the color buffer. | 713 // Read pixels from the color buffer. |
| 714 glReadPixels(x0, height() - y1, areawidth, areaheight, GL_RGBA, GL_UNSIGNED_BYTE, pixelData.data()); | 714 glReadPixels(x0, height() - y1, areawidth, areaheight, GL_RGBA, GL_UNSIGNED_BYTE, pixelData.data()); |
| 715 | 715 |
| 716 QSet<int32_t> indices; | 716 QSet<qint32> indices; |
| 717 | 717 |
| 718 // Go through each pixel read and add them to the selection. | 718 // Go through each pixel read and add them to the selection. |
| 719 // Each pixel maps to an LDObject index injectively. | 719 // Each pixel maps to an LDObject index injectively. |
| 720 // Note: black is background, those indices are skipped. | 720 // Note: black is background, those indices are skipped. |
| 721 for (unsigned char *pixelCursor = pixelData.begin(); pixelCursor < pixelData.end(); pixelCursor += 4) | 721 for (unsigned char *pixelCursor = pixelData.begin(); pixelCursor < pixelData.end(); pixelCursor += 4) |
| 722 { | 722 { |
| 723 int32_t index = pixelCursor[0] * 0x10000 + | 723 qint32 index = pixelCursor[0] * 0x10000 + pixelCursor[1] * 0x100 + pixelCursor[2] * 0x1; |
| 724 pixelCursor[1] * 0x100 + | |
| 725 pixelCursor[2] * 0x1; | |
| 726 if (index != 0) | 724 if (index != 0) |
| 727 indices.insert(index); | 725 indices.insert(index); |
| 728 } | 726 } |
| 729 | 727 |
| 730 // For each index read, resolve the LDObject behind it and add it to the selection. | 728 // For each index read, resolve the LDObject behind it and add it to the selection. |
| 731 for (int32_t index : indices) | 729 for (qint32 index : indices) |
| 732 { | 730 { |
| 733 LDObject* object = LDObject::fromID(index); | 731 LDObject* object = LDObject::fromID(index); |
| 734 | 732 |
| 735 if (object != nullptr) | 733 if (object != nullptr) |
| 736 newSelection.insert(object); | 734 newSelection.insert(object); |
