Method copyData

src/collision/HeightField.cpp:89–133

Copy the data from the user into the height-field array

// Copy the data from the user into the height-field array
void HeightField::copyData(const void* heightFieldData) {

    // For each height value
    for (uint32 x=0; x < mNbColumns; x++) {

        for (uint32 y=0; y < mNbRows; y++) {

            decimal height = 0.0;

            switch(mHeightDataType) {
                case HeightDataType::HEIGHT_FLOAT_TYPE:
                    height = decimal(((float*)heightFieldData)[y * mNbColumns + x]);
                    break;
                case HeightDataType::HEIGHT_DOUBLE_TYPE:
                    height = decimal(((double*)heightFieldData)[y * mNbColumns + x]);
                    break;
                case HeightDataType::HEIGHT_INT_TYPE:
                    height = decimal(((int*)heightFieldData)[y * mNbColumns + x] * mIntegerHeightScale);
                    break;
                default:
                    assert(false);  // This should never happen
            }

            mHeightFieldData[y * mNbColumns + x] = height;

            if (x == 0 && y == 0) {
               mMinHeight = height;
               mMaxHeight = height;
            }

            // Compute minimum height
            if (height < mMinHeight) {
                mMinHeight = height;
            }

            // Compute maximum height
            if (height > mMaxHeight) {
                mMaxHeight = height;
            }
        }
    }

    // Compute the height origin
    mHeightOrigin = -(mMaxHeight - mMinHeight) * decimal(0.5) - mMinHeight;
}

// Test collision with the triangles of the height field shape. The idea is to use the AABB
// of the body when need to test and see against which triangles of the height-field we need