@Override
public void workOnSlice(int sliceNumber) {
PrioritizableScene phantomScene = phantom;
if (phantom instanceof AnalyticPhantom4D) {
AnalyticPhantom4D scene4D = (AnalyticPhantom4D) phantom;
phantomScene = scene4D.getScene(((double) sliceNumber) / trajectory.getProjectionStackSize());
String disableAutoCenterBoolean =
Configuration.getGlobalConfiguration()
.getRegistryEntry(RegKeys.DISABLE_CENTERING_4DPHANTOM_PROJECTION_RENDERING);
boolean disableAutoCenter = false;
if (disableAutoCenterBoolean != null) {
disableAutoCenter = Boolean.parseBoolean(disableAutoCenterBoolean);
}
Translation centerTranslation = new Translation(new SimpleVector(0, 0, 0));
if (!disableAutoCenter) {
SimpleVector center =
SimpleOperators.add(
phantom.getMax().getAbstractVector(), phantom.getMin().getAbstractVector())
.dividedBy(2);
centerTranslation = new Translation(center.negated());
}
for (PhysicalObject o : phantomScene) {
o.getShape().applyTransform(centerTranslation);
// System.out.println(o.getShape().getMax() + " " + o.getShape().getMin());
// Translate a part of XCAT to the center of source & detector for 2D projection (e.g. knee
// at the center of the 2d projection)
String translationString =
Configuration.getGlobalConfiguration()
.getRegistryEntry(RegKeys.GLOBAL_TRANSLATION_4DPHANTOM_PROJECTION_RENDERING);
if (translationString != null) {
// Center b/w RKJC & LKJC: -292.6426 211.7856 440.7783 (subj 5, static60),-401.1700
// 165.9885 478.5600 (subj 2, static60)
// XCAT Center by min & max: -177.73999504606988, 179.8512744259873, 312.19713254613583
// translationVector = (XCAT Center by min & max) - (Center b/w RKJC & LKJC)=>
// 114.9026, -31.9343, -128.5811 (subj5), 120, 3, -110(subj2) Try 114.0568 2.4778
// -106.2550
String[] values = translationString.split(", ");
SimpleVector translationVector =
new SimpleVector(
Double.parseDouble(values[0]),
Double.parseDouble(values[1]),
Double.parseDouble(values[2]));
Translation translationToRotationCenter = new Translation(translationVector);
o.getShape().applyTransform(translationToRotationCenter);
}
}
// System.out.println(phantomScene.getMax() + " " + phantomScene.getMin());
}
Grid2D slice = raytraceScene(phantomScene, trajectory.getProjectionMatrix(sliceNumber));
this.imageBuffer.add(slice, sliceNumber);
}
public void setTrajectory(
int numProjectionMatrices,
double sourceToAxisDistance,
double averageAngularIncrement,
double detectorOffsetX,
double detectorOffsetY,
CameraAxisDirection uDirection,
CameraAxisDirection vDirection,
SimpleVector rotationAxis,
PointND rotationCenter,
double angleFirstProjection) {
this.projectionMatrices = new Projection[numProjectionMatrices];
this.primaryAngles = new double[numProjectionMatrices];
this.numProjectionMatrices = numProjectionMatrices;
this.sourceToAxisDistance = sourceToAxisDistance;
this.averageAngularIncrement = averageAngularIncrement;
this.detectorOffsetU = detectorOffsetX;
this.detectorOffsetV = detectorOffsetY;
double cosPhi = Math.cos(General.toRadians(angleFirstProjection));
double sinPhi = Math.sin(General.toRadians(angleFirstProjection));
SimpleMatrix rotMat = new SimpleMatrix(3, 3);
rotMat.setElementValue(0, 0, cosPhi);
rotMat.setElementValue(0, 1, sinPhi);
rotMat.setElementValue(1, 0, -sinPhi);
rotMat.setElementValue(1, 1, cosPhi);
rotMat.setElementValue(2, 2, 1);
SimpleVector centerToCameraIdealAtInitialAngle =
SimpleOperators.multiply(rotMat, new SimpleVector(sourceToAxisDistance, 0, 0));
Plane3D trajPlane =
new Plane3D(
rotationAxis,
SimpleOperators.multiplyInnerProd(rotationAxis, rotationCenter.getAbstractVector()));
double distToPlane = trajPlane.computeDistance(new PointND(centerToCameraIdealAtInitialAngle));
SimpleVector centerToCameraDir =
SimpleOperators.subtract(
SimpleOperators.add(
rotationAxis.multipliedBy(-1 * distToPlane), centerToCameraIdealAtInitialAngle),
rotationCenter.getAbstractVector());
centerToCameraDir.divideBy(centerToCameraDir.normL2());
SimpleVector centerToCameraInitialInPlane =
centerToCameraDir.multipliedBy(sourceToAxisDistance);
for (int i = 0; i < numProjectionMatrices; i++) {
primaryAngles[i] = i * averageAngularIncrement + angleFirstProjection;
// System.out.println(primaryAngles[i] + " " + averageAngularIncrement + " " +
// this.reconDimensions[0] + " " + this.reconDimensions[1]);
projectionMatrices[i] = new Projection();
double rotationAngle = General.toRadians(primaryAngles[i]);
projectionMatrices[i].setRtFromCircularTrajectory(
rotationCenter.getAbstractVector(),
rotationAxis,
sourceToAxisDistance,
centerToCameraInitialInPlane,
uDirection,
vDirection,
rotationAngle);
SimpleVector spacingUV = new SimpleVector(pixelDimensionX, pixelDimensionY);
SimpleVector sizeUV = new SimpleVector(detectorWidth, detectorHeight);
SimpleVector offset = new SimpleVector(detectorOffsetX, detectorOffsetY);
projectionMatrices[i].setKFromDistancesSpacingsSizeOffset(
sourceToDetectorDistance, spacingUV, sizeUV, offset, 1.0, 0);
}
this.projectionStackSize = numProjectionMatrices;
// System.out.println("Defined geometry with SDD " +sourceToDetectorDistance);
}
