cornerstone-nifti-image-loader/dist/cornerstoneNIFTIImageLoader.min.js

Cornerstone ImageLoader for NIfTI

/*! cornerstone-nifti-image-loader - 1.0.0 - 2018-11-11 | (c) 2018 Flywheel Exchange, LLC | https://github.com/flywheel-io/cornerstone-nifti-image-loader */
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r=r||{};r.Utils=r.Utils||n(12),r.NIFTI1=r.NIFTI1||function(){this.littleEndian=!1,this.dim_info=0,this.dims=[],this.intent_p1=0,this.intent_p2=0,this.intent_p3=0,this.intent_code=0,this.datatypeCode=0,this.numBitsPerVoxel=0,this.slice_start=0,this.slice_end=0,this.slice_code=0,this.pixDims=[],this.vox_offset=0,this.scl_slope=1,this.scl_inter=0,this.xyzt_units=0,this.cal_max=0,this.cal_min=0,this.slice_duration=0,this.toffset=0,this.description="",this.aux_file="",this.intent_name="",this.qform_code=0,this.sform_code=0,this.quatern_b=0,this.quatern_c=0,this.quatern_d=0,this.qoffset_x=0,this.qoffset_y=0,this.qoffset_z=0,this.affine=[[1,0,0,0],[0,1,0,0],[0,0,1,0],[0,0,0,1]],this.magic=0,this.isHDR=!1,this.extensionFlag=[0,0,0,0],this.extensionSize=0,this.extensionCode=0},r.NIFTI1.TYPE_NONE=0,r.NIFTI1.TYPE_BINARY=1,r.NIFTI1.TYPE_UINT8=2,r.NIFTI1.TYPE_INT16=4,r.NIFTI1.TYPE_INT32=8,r.NIFTI1.TYPE_FLOAT32=16,r.NIFTI1.TYPE_COMPLEX64=32,r.NIFTI1.TYPE_FLOAT64=64,r.NIFTI1.TYPE_RGB24=128,r.NIFTI1.TYPE_INT8=256,r.NIFTI1.TYPE_UINT16=512,r.NIFTI1.TYPE_UINT32=768,r.NIFTI1.TYPE_INT64=1024,r.NIFTI1.TYPE_UINT64=1280,r.NIFTI1.TYPE_FLOAT128=1536,r.NIFTI1.TYPE_COMPLEX128=1792,r.NIFTI1.TYPE_COMPLEX256=2048,r.NIFTI1.XFORM_UNKNOWN=0,r.NIFTI1.XFORM_SCANNER_ANAT=1,r.NIFTI1.XFORM_ALIGNED_ANAT=2,r.NIFTI1.XFORM_TALAIRACH=3,r.NIFTI1.XFORM_MNI_152=4,r.NIFTI1.SPATIAL_UNITS_MASK=7,r.NIFTI1.TEMPORAL_UNITS_MASK=56,r.NIFTI1.UNITS_UNKNOWN=0,r.NIFTI1.UNITS_METER=1,r.NIFTI1.UNITS_MM=2,r.NIFTI1.UNITS_MICRON=3,r.NIFTI1.UNITS_SEC=8,r.NIFTI1.UNITS_MSEC=16,r.NIFTI1.UNITS_USEC=24,r.NIFTI1.UNITS_HZ=32,r.NIFTI1.UNITS_PPM=40,r.NIFTI1.UNITS_RADS=48,r.NIFTI1.MAGIC_COOKIE=348,r.NIFTI1.STANDARD_HEADER_SIZE=348,r.NIFTI1.MAGIC_NUMBER_LOCATION=344,r.NIFTI1.MAGIC_NUMBER=[110,43,49],r.NIFTI1.MAGIC_NUMBER2=[110,105,49],r.NIFTI1.EXTENSION_HEADER_SIZE=8,r.NIFTI1.prototype.readHeader=function(t){var e,n,i,a,o=new DataView(t),s=r.Utils.getIntAt(o,0,this.littleEndian);if(s!==r.NIFTI1.MAGIC_COOKIE&&(this.littleEndian=!0,s=r.Utils.getIntAt(o,0,this.littleEndian)),s!==r.NIFTI1.MAGIC_COOKIE)throw new Error("This does not appear to be a NIFTI file!");for(this.dim_info=r.Utils.getByteAt(o,39),e=0;e<8;e+=1)a=40+2*e,this.dims[e]=r.Utils.getShortAt(o,a,this.littleEndian);for(this.intent_p1=r.Utils.getFloatAt(o,56,this.littleEndian),this.intent_p2=r.Utils.getFloatAt(o,60,this.littleEndian),this.intent_p3=r.Utils.getFloatAt(o,64,this.littleEndian),this.intent_code=r.Utils.getShortAt(o,68,this.littleEndian),this.datatypeCode=r.Utils.getShortAt(o,70,this.littleEndian),this.numBitsPerVoxel=r.Utils.getShortAt(o,72,this.littleEndian),this.slice_start=r.Utils.getShortAt(o,74,this.littleEndian),e=0;e<8;e+=1)a=76+4*e,this.pixDims[e]=r.Utils.getFloatAt(o,a,this.littleEndian);for(this.vox_offset=r.Utils.getFloatAt(o,108,this.littleEndian),this.scl_slope=r.Utils.getFloatAt(o,112,this.littleEndian),this.scl_inter=r.Utils.getFloatAt(o,116,this.littleEndian),this.slice_end=r.Utils.getShortAt(o,120,this.littleEndian),this.slice_code=r.Utils.getByteAt(o,122),this.xyzt_units=r.Utils.getByteAt(o,123),this.cal_max=r.Utils.getFloatAt(o,124,this.littleEndian),this.cal_min=r.Utils.getFloatAt(o,128,this.littleEndian),this.slice_duration=r.Utils.getFloatAt(o,132,this.littleEndian),this.toffset=r.Utils.getFloatAt(o,136,this.littleEndian),this.description=r.Utils.getStringAt(o,148,228),this.aux_file=r.Utils.getStringAt(o,228,252),this.qform_code=r.Utils.getShortAt(o,252,this.littleEndian),this.sform_code=r.Utils.getShortAt(o,254,this.littleEndian),this.quatern_b=r.Utils.getFloatAt(o,256,this.littleEndian),this.quatern_c=r.Utils.getFloatAt(o,260,this.littleEndian),this.quatern_d=r.Utils.getFloatAt(o,264,this.littleEndian),this.qoffset_x=r.Utils.getFloatAt(o,268,this.littleEndian),this.qoffset_y=r.Utils.getFloatAt(o,272,this.littleEndian),this.qoffset_z=r.Utils.getFloatAt(o,276,this.littleEndian),n=0;n<3;n+=1)for(i=0;i<4;i+=1)a=280+4*(4*n+i),this.affine[n][i]=r.Utils.getFloatAt(o,a,this.littleEndian);this.affine[3][0]=0,this.affine[3][1]=0,this.affine[3][2]=0,this.affine[3][3]=1,this.intent_name=r.Utils.getStringAt(o,328,344),this.magic=r.Utils.getStringAt(o,344,348),this.isHDR=this.magic===r.NIFTI1.MAGIC_NUMBER2,o.byteLength>r.NIFTI1.MAGIC_COOKIE&&(this.extensionFlag[0]=r.Utils.getByteAt(o,348),this.extensionFlag[1]=r.Utils.getByteAt(o,349),this.extensionFlag[2]=r.Utils.getByteAt(o,350),this.extensionFlag[3]=r.Utils.getByteAt(o,351),this.extensionFlag[0]&&(this.extensionSize=this.getExtensionSize(o),this.extensionCode=this.getExtensionCode(o)))},r.NIFTI1.prototype.toFormattedString=function(){var t=r.Utils.formatNumber,e="";return e+="Dim Info = "+this.dim_info+"\n",e+="Image Dimensions (1-8): "+this.dims[0]+", "+this.dims[1]+", "+this.dims[2]+", "+this.dims[3]+", "+this.dims[4]+", "+this.dims[5]+", "+this.dims[6]+", "+this.dims[7]+"\n",e+="Intent Parameters (1-3): "+this.intent_p1+", "+this.intent_p2+", "+this.intent_p3+"\n",e+="Intent Code = "+this.intent_code+"\n",e+="Datatype = "+this.datatypeCode+" ("+this.getDatatypeCodeString(this.datatypeCode)+")\n",e+="Bits Per Voxel = "+this.numBitsPerVoxel+"\n",e+="Slice Start = "+this.slice_start+"\n",e+="Voxel Dimensions (1-8): "+t(this.pixDims[0])+", "+t(this.pixDims[1])+", "+t(this.pixDims[2])+", "+t(this.pixDims[3])+", "+t(this.pixDims[4])+", "+t(this.pixDims[5])+", "+t(this.pixDims[6])+", "+t(this.pixDims[7])+"\n",e+="Image Offset = "+this.vox_offset+"\n",e+="Data Scale:  Slope = "+t(this.scl_slope)+"  Intercept = "+t(this.scl_inter)+"\n",e+="Slice End = "+this.slice_end+"\n",e+="Slice Code = "+this.slice_code+"\n",e+="Units Code = "+this.xyzt_units+" ("+this.getUnitsCodeString(r.NIFTI1.SPATIAL_UNITS_MASK&this.xyzt_units)+", "+this.getUnitsCodeString(r.NIFTI1.TEMPORAL_UNITS_MASK&this.xyzt_units)+")\n",e+="Display Range:  Max = "+t(this.cal_max)+"  Min = "+t(this.cal_min)+"\n",e+="Slice Duration = "+this.slice_duration+"\n",e+="Time Axis Shift = "+this.toffset+"\n",e+='Description: "'+this.description+'"\n',e+='Auxiliary File: "'+this.aux_file+'"\n',e+="Q-Form Code = "+this.qform_code+" ("+this.getTransformCodeString(this.qform_code)+")\n",e+="S-Form Code = "+this.sform_code+" ("+this.getTransformCodeString(this.sform_code)+")\n",e+="Quaternion Parameters:  b = "+t(this.quatern_b)+"  c = "+t(this.quatern_c)+"  d = "+t(this.quatern_d)+"\n",e+="Quaternion Offsets:  x = "+this.qoffset_x+"  y = "+this.qoffset_y+"  z = "+this.qoffset_z+"\n",e+="S-Form Parameters X: "+t(this.affine[0][0])+", "+t(this.affine[0][1])+", "+t(this.affine[0][2])+", "+t(this.affine[0][3])+"\n",e+="S-Form Parameters Y: "+t(this.affine[1][0])+", "+t(this.affine[1][1])+", "+t(this.affine[1][2])+", "+t(this.affine[1][3])+"\n",e+="S-Form Parameters Z: "+t(this.affine[2][0])+", "+t(this.affine[2][1])+", "+t(this.affine[2][2])+", "+t(this.affine[2][3])+"\n",e+='Intent Name: "'+this.intent_name+'"\n',this.extensionFlag[0]&&(e+="Extension: Size = "+this.extensionSize+"  Code = "+this.extensionCode+"\n"),e},r.NIFTI1.prototype.getDatatypeCodeString=function(t){return t===r.NIFTI1.TYPE_UINT8?"1-Byte Unsigned Integer":t===r.NIFTI1.TYPE_INT16?"2-Byte Signed Integer":t===r.NIFTI1.TYPE_INT32?"4-Byte Signed Integer":t===r.NIFTI1.TYPE_FLOAT32?"4-Byte Float":t===r.NIFTI1.TYPE_FLOAT64?"8-Byte Float":t===r.NIFTI1.TYPE_RGB24?"RGB":t===r.NIFTI1.TYPE_INT8?"1-Byte Signed Integer