28 lines
719 B
C++
28 lines
719 B
C++
#include <mbgl/geometry/collision_box_buffer.hpp>
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#include <mbgl/platform/gl.hpp>
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#include <mbgl/util/math.hpp>
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#include <cmath>
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namespace mbgl {
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size_t CollisionBoxVertexBuffer::add(int16_t x, int16_t y, float ox, float oy, float maxzoom, float placementZoom) {
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const size_t idx = index();
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void *data = addElement();
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int16_t *shorts = static_cast<int16_t *>(data);
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shorts[0] /* pos */ = x;
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shorts[1] /* pos */ = y;
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shorts[2] /* offset */ = std::round(ox); // use 1/64 pixels for placement
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shorts[3] /* offset */ = std::round(oy);
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uint8_t *ubytes = static_cast<uint8_t *>(data);
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// a_data1
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ubytes[8] = maxzoom * 10;
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ubytes[9] = placementZoom * 10;
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return idx;
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}
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}
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