60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
#include "labimage.h"
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#include <memory.h>
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namespace rtengine {
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LabImage::LabImage (int w, int h) : fromImage(false), W(w), H(h) {
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L = new float*[H];
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a = new float*[H];
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b = new float*[H];
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data = new float [W*H*3];
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float * index = data;
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for (int i=0; i<H; i++)
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L[i] = index + i*W;
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index+=W*H;
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for (int i=0; i<H; i++)
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a[i] = index + i*W;
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index+=W*H;
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for (int i=0; i<H; i++)
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b[i] = index + i*W;
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}
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LabImage::~LabImage () {
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if (!fromImage) {
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delete [] L;
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delete [] a;
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delete [] b;
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delete [] data;
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}
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}
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void LabImage::CopyFrom(LabImage *Img){
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memcpy(data, Img->data, W*H*3*sizeof(float));
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}
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void LabImage::getPipetteData (float &v1, float &v2, float &v3, int posX, int posY, int squareSize) {
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float accumulator_L = 0.f;
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float accumulator_a = 0.f;
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float accumulator_b = 0.f;
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unsigned long int n = 0;
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int halfSquare = squareSize/2;
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for (int iy=posY-halfSquare; iy<posY-halfSquare+squareSize; ++iy) {
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for (int ix=posX-halfSquare; ix<posX-halfSquare+squareSize; ++ix) {
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if (ix>=0 && iy>=0 && ix<W && iy<H) {
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accumulator_L += L[iy][ix];
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accumulator_a += a[iy][ix];
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accumulator_b += b[iy][ix];
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++n;
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}
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}
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}
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v1 = n ? accumulator_L/float(n) : 0.f;
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v2 = n ? accumulator_a/float(n) : 0.f;
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v3 = n ? accumulator_b/float(n) : 0.f;
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}
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}
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