| 900 | |
| 901 | |
| 902 | bool TerrainBlock::getNormalHeightMaterial( const Point2F &pos, |
| 903 | Point3F *normal, |
| 904 | F32 *height, |
| 905 | StringTableEntry &matName ) const |
| 906 | { |
| 907 | PROFILE_SCOPE( TerrainBlock_getNormalHeightMaterial ); |
| 908 | |
| 909 | F32 invSquareSize = 1.0f / mSquareSize; |
| 910 | F32 xp = pos.x * invSquareSize; |
| 911 | F32 yp = pos.y * invSquareSize; |
| 912 | S32 x = S32(xp); |
| 913 | S32 y = S32(yp); |
| 914 | S32 xm = S32(mFloor( xp + 0.5f )); |
| 915 | S32 ym = S32(mFloor( yp + 0.5f )); |
| 916 | xp -= (F32)x; |
| 917 | yp -= (F32)y; |
| 918 | |
| 919 | const U32 blockMask = mFile->mSize - 1; |
| 920 | |
| 921 | if ( x & ~blockMask || y & ~blockMask ) |
| 922 | return false; |
| 923 | |
| 924 | x &= blockMask; |
| 925 | y &= blockMask; |
| 926 | |
| 927 | const TerrainSquare *sq = mFile->findSquare( 0, x, y ); |
| 928 | if ( sq->flags & TerrainSquare::Empty ) |
| 929 | return false; |
| 930 | |
| 931 | F32 zBottomLeft = fixedToFloat( mFile->getHeight(x, y) ); |
| 932 | F32 zBottomRight = fixedToFloat( mFile->getHeight(x + 1, y) ); |
| 933 | F32 zTopLeft = fixedToFloat( mFile->getHeight(x, y + 1) ); |
| 934 | F32 zTopRight = fixedToFloat( mFile->getHeight(x + 1, y + 1) ); |
| 935 | |
| 936 | matName = mFile->getMaterialName( xm, ym ); |
| 937 | |
| 938 | if ( sq->flags & TerrainSquare::Split45 ) |
| 939 | { |
| 940 | if (xp>yp) |
| 941 | { |
| 942 | // bottom half |
| 943 | normal->set(zBottomLeft-zBottomRight, zBottomRight-zTopRight, mSquareSize); |
| 944 | *height = zBottomLeft + xp * (zBottomRight-zBottomLeft) + yp * (zTopRight-zBottomRight); |
| 945 | } |
| 946 | else |
| 947 | { |
| 948 | // top half |
| 949 | normal->set(zTopLeft-zTopRight, zBottomLeft-zTopLeft, mSquareSize); |
| 950 | *height = zBottomLeft + xp * (zTopRight-zTopLeft) + yp * (zTopLeft-zBottomLeft); |
| 951 | } |
| 952 | } |
| 953 | else |
| 954 | { |
| 955 | if (1.0f-xp>yp) |
| 956 | { |
| 957 | // bottom half |
| 958 | normal->set(zBottomLeft-zBottomRight, zBottomLeft-zTopLeft, mSquareSize); |
| 959 | *height = zBottomRight + (1.0f-xp) * (zBottomLeft-zBottomRight) + yp * (zTopLeft-zBottomLeft); |
no test coverage detected