43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include <mbgl/geometry/debug_font_buffer.hpp>
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#include <mbgl/platform/gl.hpp>
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#include <cmath>
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#include <cstring>
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#include "debug_font_data.hpp"
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using namespace mbgl;
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void DebugFontBuffer::addText(const char *text, double left, double baseline, double scale) {
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uint16_t *coords = nullptr;
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const size_t len = strlen(text);
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for (size_t i = 0; i < len; ++i) {
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if (text[i] < 32 || (unsigned char)(text[i]) >= 127) {
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continue;
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}
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const glyph& glyph = simplex[text[i] - 32];
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int16_t prev_x = -1, prev_y = -1, prev = false;
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for (int32_t j = 0; j < glyph.length; j += 2) {
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if (glyph.data[j] == -1 && glyph.data[j + 1] == -1) {
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prev = false;
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} else {
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int16_t x = std::round(left + glyph.data[j] * scale);
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int16_t y = std::round(baseline - glyph.data[j + 1] * scale);
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if (prev) {
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coords = static_cast<uint16_t *>(addElement());
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coords[0] = prev_x;
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coords[1] = prev_y;
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coords = static_cast<uint16_t *>(addElement());
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coords[0] = x;
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coords[1] = y;
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}
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prev_x = x; prev_y = y; prev = true;
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}
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}
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left += glyph.width * scale;
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}
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}
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