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Additional frequency indicators when zoomed in

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This commit is contained in:
Charles J. Cliffe 2015-03-01 19:56:02 -05:00
parent 9e53d25394
commit 54b10b232e
1 changed files with 8 additions and 1 deletions
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9
src/visual/SpectrumContext.cpp
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@ -107,7 +107,14 @@ void SpectrumContext::Draw(std::vector<float> &points, long long freq, int bandw
long long firstMhz = (leftFreq / 1000000) * 1000000; long long firstMhz = (leftFreq / 1000000) * 1000000;
long double mhzStart = ((long double) (firstMhz - leftFreq) / (long double) (rightFreq - leftFreq)) * 2.0; long double mhzStart = ((long double) (firstMhz - leftFreq) / (long double) (rightFreq - leftFreq)) * 2.0;
long double mhzStep = (100000.0 / (long double) (rightFreq - leftFreq)) * 2.0; long double mhzStep = (100000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
float mhzVisualStep = 0.1f;
if (mhzStep * 0.5 * viewWidth > 400) {
mhzStep = (10000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
mhzVisualStep = 0.01f;
}
long double currentMhz = trunc(floor(firstMhz / 1000000.0)); long double currentMhz = trunc(floor(firstMhz / 1000000.0));
@ -144,7 +151,7 @@ void SpectrumContext::Draw(std::vector<float> &points, long long freq, int bandw
label.str(std::string()); label.str(std::string());
currentMhz += 0.1f; currentMhz += mhzVisualStep;
} }
glLineWidth(1.0); glLineWidth(1.0);