71 lines
2.0 KiB
C++
71 lines
2.0 KiB
C++
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#include "./JsonCoordinateMapping.h"
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unsigned int
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JsonCoordinateMapping::physicalPixelCount() const {
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int total = 0;
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for(int i = 0; i < strideCount; i++) {
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total += displayMap[i].length;
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}
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return total;
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}
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int
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JsonCoordinateMapping::physicalCoordsToIndex(const PhysicalCoordinates localCoords) const {
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uint8_t idx = 0;
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bool inverse = false;
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for(int i = 0; i < localCoords.x; i++) {
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idx += displayMap[i].length;
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inverse = !inverse;
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}
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if (inverse) {
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idx += std::max(0, displayMap[localCoords.x].length - 1 - std::max(0, (int)localCoords.y - displayMap[localCoords.x].y));
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} else {
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idx += std::min((int)displayMap[localCoords.x].length - 1, std::max(0, (int)localCoords.y - displayMap[localCoords.x].y));
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}
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return idx;
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}
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PhysicalCoordinates
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JsonCoordinateMapping::virtualToPhysicalCoords(const VirtualCoordinates virtualCoords) const {
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const uint8_t spanIdx = scale8(strideCount-1, virtualCoords.x);
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const uint8_t spanOffset = scale8(maxStrideSize - 1, virtualCoords.y);
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return PhysicalCoordinates{spanIdx, spanOffset};
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}
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VirtualCoordinates
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JsonCoordinateMapping::physicalToVirtualCoords(const PhysicalCoordinates localCoords) const {
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int offset = localCoords.x;
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for(int i = 0; i < strideCount; i++) {
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if (offset > displayMap[i].length) {
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offset -= displayMap[i].length;
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} else {
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return VirtualCoordinates{i, offset};
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}
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}
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return VirtualCoordinates{0, 0};
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}
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void
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JsonCoordinateMapping::load(const JsonArray& strideList)
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{
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maxStrideSize = 0;
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strideCount = strideList.size();
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for(int i = 0; i < strideList.size();i++) {
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JsonObject strideObj = strideList[i];
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int length = strideObj["pixels"];
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int x = strideObj["x"];
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int y = strideObj["y"];
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displayMap[i] = Span{length, x, y};
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Log.verbose("config: Found stride (%d, %d): %d", x, y, length);
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maxStrideSize = length > maxStrideSize ? length : maxStrideSize;
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}
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}
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void
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JsonCoordinateMapping::loadDefault()
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{
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displayMap[0] = Span{255, 0, 0};
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maxStrideSize = 255;
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strideCount = 1;
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}
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