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make translate property zoom independent

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if you want a zoom-dependent translation, you can use a function

refs #189
This commit is contained in:
Konstantin Käfer
2014-05-13 16:48:23 +02:00
parent 7447b03ee7
commit 05a330f347
6 changed files with 19 additions and 22 deletions
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17
src/renderer/painter.cpp
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@@ -7,6 +7,7 @@
#include <llmr/util/timer.hpp>
#include <llmr/util/time.hpp>
#include <llmr/util/clip_ids.hpp>
#include <llmr/util/constants.hpp>
#include <cassert>
#include <algorithm>
@@ -170,17 +171,13 @@ void Painter::renderTileLayer(const Tile& tile, const LayerDescription &layer_de
}
}
void Painter::translateLayer(std::array<float, 2> translation, bool reverse) {
void Painter::translateLayer(const std::array<float, 2> translation, const Tile::ID &id, bool reverse) {
if (translation[0] || translation[1]) {
if (reverse) {
translation[0] *= -1;
translation[1] *= -1;
}
matrix::translate(matrix,
matrix,
translation[0] / map.getState().getPixelRatio(),
translation[1] / map.getState().getPixelRatio(),
0);
const int direction = reverse ? -1 : 1;
// TODO: Get rid of the 8 (scaling from 4096 to tile size)
const double factor = direction * ((double)(1 << id.z)) / map.getState().getScale() /
map.getState().getPixelRatio() * (4096.0 / util::tileSize);
matrix::translate(matrix, matrix, translation[0] * factor, translation[1] * factor, 0);
}
}