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Fix led mapping boundaries

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Former-commit-id: 3f41d6b41ceff5c0b81c0041ea185233e37d363c
This commit is contained in:
poljvd 2014-03-26 16:26:11 +01:00
parent b62bcc5331
commit 8eb43f0c90
1 changed files with 24 additions and 7 deletions
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31
libsrc/hyperion/ImageToLedsMap.cpp
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@ -1,4 +1,3 @@
// STL includes
#include <algorithm>
#include <cmath>
@ -33,17 +32,35 @@ ImageToLedsMap::ImageToLedsMap(
for (const Led& led : leds)
{
// skip leds without area
if ((led.maxX_frac-led.minX_frac) < 1e-6 || (led.maxY_frac-led.minY_frac) < 1e-6)
{
continue;
}
// Compute the index boundaries for this led
const unsigned minX_idx = xOffset + unsigned(std::round((actualWidth-1) * led.minX_frac));
const unsigned maxX_idx = xOffset + unsigned(std::round((actualWidth-1) * led.maxX_frac));
const unsigned minY_idx = yOffset + unsigned(std::round((actualHeight-1) * led.minY_frac));
const unsigned maxY_idx = yOffset + unsigned(std::round((actualHeight-1) * led.maxY_frac));
unsigned minX_idx = xOffset + unsigned(std::round(actualWidth * led.minX_frac));
unsigned maxX_idx = xOffset + unsigned(std::round(actualWidth * led.maxX_frac));
unsigned minY_idx = yOffset + unsigned(std::round(actualHeight * led.minY_frac));
unsigned maxY_idx = yOffset + unsigned(std::round(actualHeight * led.maxY_frac));
// make sure that the area is at least a single led large
minX_idx = std::min(minX_idx, xOffset + actualWidth - 1);
if (minX_idx == maxX_idx)
{
maxX_idx = minX_idx + 1;
}
minY_idx = std::min(minY_idx, yOffset + actualHeight - 1);
if (minY_idx == maxY_idx)
{
maxY_idx = minY_idx + 1;
}
// Add all the indices in the above defined rectangle to the indices for this led
std::vector<unsigned> ledColors;
for (unsigned y = minY_idx; y<=maxY_idx && y<height; ++y)
for (unsigned y = minY_idx; y<maxY_idx && y<(yOffset+actualHeight); ++y)
{
for (unsigned x = minX_idx; x<=maxX_idx && x<width; ++x)
for (unsigned x = minX_idx; x<maxX_idx && x<(xOffset+actualWidth); ++x)
{
ledColors.push_back(y*width + x);
}