32 lines
1.4 KiB
JavaScript
32 lines
1.4 KiB
JavaScript
//This file is automatically rebuilt by the Cesium build process.
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export default "uniform vec3 u_boxLocalToShapeUvScale;\n\
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\n\
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uniform ivec4 u_cameraTileCoordinates;\n\
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uniform vec3 u_cameraTileUv;\n\
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uniform mat3 u_boxEcToXyz;\n\
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\n\
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mat3 convertLocalToShapeSpaceDerivative(in vec3 positionLocal) {\n\
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// For BOX, local space = shape space, so the Jacobian is the identity matrix.\n\
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return mat3(1.0);\n\
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}\n\
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\n\
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vec3 scaleShapeUvToShapeSpace(in vec3 shapeUv) {\n\
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return shapeUv / u_boxLocalToShapeUvScale;\n\
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}\n\
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\n\
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vec3 convertEcToDeltaTile(in vec3 positionEC) {\n\
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vec3 dPosition = u_boxEcToXyz * positionEC;\n\
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return u_boxLocalToShapeUvScale * dPosition * float(1 << u_cameraTileCoordinates.w);\n\
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}\n\
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\n\
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TileAndUvCoordinate getTileAndUvCoordinate(in vec3 positionEC) {\n\
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vec3 deltaTileCoordinate = convertEcToDeltaTile(positionEC);\n\
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vec3 tileUvSum = u_cameraTileUv + deltaTileCoordinate;\n\
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ivec3 tileCoordinate = u_cameraTileCoordinates.xyz + ivec3(floor(tileUvSum));\n\
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tileCoordinate = min(max(ivec3(0), tileCoordinate), ivec3((1 << u_cameraTileCoordinates.w) - 1));\n\
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ivec3 tileCoordinateChange = tileCoordinate - u_cameraTileCoordinates.xyz;\n\
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vec3 tileUv = clamp(tileUvSum - vec3(tileCoordinateChange), 0.0, 1.0);\n\
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return TileAndUvCoordinate(ivec4(tileCoordinate, u_cameraTileCoordinates.w), tileUv);\n\
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}\n\
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";
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