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Functions (first part)

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Jakub Melka
2019-03-03 16:14:38 +01:00
parent 0666f976b1
commit 2023e17c4c
5 changed files with 655 additions and 2 deletions
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33
UnitTests/tst_lexicalanalyzertest.cpp
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@@ -23,6 +23,7 @@
#include "pdfconstants.h"
#include "pdfflatmap.h"
#include "pdfstreamfilters.h"
#include "pdffunction.h"
#include <regex>
@@ -46,6 +47,7 @@ private slots:
void test_header_regexp();
void test_flat_map();
void test_lzw_filter();
void test_sampled_function();
private:
void scanWholeStream(const char* stream);
@@ -308,6 +310,37 @@ void LexicalAnalyzerTest::test_lzw_filter()
QCOMPARE(decoded, valid);
}
void LexicalAnalyzerTest::test_sampled_function()
{
// Calculate hypercube offsets. Offsets are indexed in bits, from the lowest
// bit to the highest. We assume, that we do not have more, than 32 input
// variables (we probably run out of memory in that time). Example:
//
// We have m = 3, f(x_0, x_1, x_2) is sampled function of 3 variables, n = 1.
// We have 2, 4, 6 samples for x_0, x_1 and x_2 (so sample count differs).
// Then the i-th bit corresponds to variable x_i. We will have m_hypercubeNodeCount == 8,
// hypercube offset indices are from 0 to 7.
/* explicit PDFSampledFunction(uint32_t m,
uint32_t n,
std::vector<PDFReal>&& domain,
std::vector<PDFReal>&& range,
std::vector<uint32_t>&& size,
std::vector<PDFReal>&& samples,
std::vector<PDFReal>&& encoder,
std::vector<PDFReal>&& decoder);*/
std::vector<pdf::PDFReal> samples;
samples.resize(2 * 4 * 6, 0);
pdf::PDFSampledFunction function(3, 1,
{ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0 },
{ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0 },
{ 2, 4, 6 },
std::move(samples),
{ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0 },
{ 0.0, 1.0, 0.0, 1.0, 0.0, 1.0 },
1.0);
}
void LexicalAnalyzerTest::scanWholeStream(const char* stream)
{
pdf::PDFLexicalAnalyzer analyzer(stream, stream + strlen(stream));