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[core, ios] replace altitude with fov

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ported from -js: eb6c6596c6a7a61363d30356674e0002153b1d19

`altitude` was a terribly-named variable that was used to indirectly
control the fov. This should eliminate some confusion.

`altitude` was equivalent to `cameraToCenterDistance / height`
This commit is contained in:
Ansis Brammanis
2016-12-14 15:17:01 -08:00
committed by John Firebaugh
parent ebd241363d
commit 38b5cb0c77
13 changed files with 49 additions and 36 deletions
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6
src/mbgl/programs/symbol_program.cpp
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@@ -23,8 +23,8 @@ Values makeValues(const style::SymbolPropertyValues& values,
extrudeScale.fill(tile.id.pixelsToTileUnits(1, state.getZoom()) * scale);
} else {
extrudeScale = {{
pixelsToGLUnits[0] * scale * state.getAltitude(),
pixelsToGLUnits[1] * scale * state.getAltitude()
pixelsToGLUnits[0] * scale * state.getCameraToCenterDistance(),
pixelsToGLUnits[1] * scale * state.getCameraToCenterDistance()
}};
}
@@ -77,7 +77,7 @@ static SymbolSDFProgram::UniformValues makeSDFValues(const style::SymbolProperty
const float gammaBase = 0.105 * values.sdfScale / values.paintSize / pixelRatio;
const float gammaScale = (values.pitchAlignment == AlignmentType::Map
? 1.0 / std::cos(state.getPitch())
: 1.0) / state.getAltitude();
: 1.0) / state.getCameraToCenterDistance();
return makeValues<SymbolSDFProgram::UniformValues>(
values,