protected void setUniformValues(GL gl, GlslProgram prog) {
super.setUniformValues(gl, prog);
// some matrix in gl(3)
double a = 3, b = 2, c = -.1;
Matrix m = new Matrix(0, -a, -b, 0, a, 0, -c, 0, b, c, 0, 0, 0, 0, 0, 0);
// Matrix m = MatrixBuilder.euclidean().rotate(Math.PI/2, 0,0,1).getMatrix();
prog.setUniformMatrix("matrix", m.getArray());
prog.setUniform("h", 0.005);
prog.setUniform("r3", true);
}
/** @author weissman */
public class VirtualRotation implements VirtualDevice {
InputSlot pointerNDC;
InputSlot cameraToWorld;
InputSlot out;
private double gain = 4;
// private double aspectRatio = 1;
private Matrix result = new Matrix();
private DoubleArray da = new DoubleArray(result.getArray());
private double oldX = Integer.MAX_VALUE, oldY;
private double[] mouseCoords = new double[3], mouseCoordsOld = new double[3];
public ToolEvent process(VirtualDeviceContext context) throws MissingSlotException {
if (context.getEvent().getInputSlot() == cameraToWorld) return null;
DoubleArray pointer = context.getTransformationMatrix(pointerNDC);
if (pointer == null) throw new MissingSlotException(pointerNDC);
if (oldX == Integer.MAX_VALUE) {
oldX = pointer.getValueAt(3);
oldY = pointer.getValueAt(7);
return null;
}
double x = pointer.getValueAt(3);
double y = pointer.getValueAt(7);
double dist = x * x + y * y;
double z = 2 > dist ? Math.sqrt(2 - dist) : 0;
Rn.setToValue(mouseCoords, x, y, z);
mouseCoords = Rn.normalize(mouseCoords, mouseCoords);
double[] cross = Rn.crossProduct(null, mouseCoordsOld, mouseCoords);
double angle = gain * Math.asin(Rn.euclideanNorm(cross));
double[] cross4 = {cross[0], cross[1], cross[2], 0};
cross = new Matrix(context.getTransformationMatrix(cameraToWorld)).multiplyVector(cross4);
result.assignFrom(P3.makeRotationMatrix(null, cross, angle));
Rn.setToValue(mouseCoordsOld, x, y, z);
return new ToolEvent(this, context.getEvent().getTimeStamp(), out, da);
}
public void initialize(List inputSlots, InputSlot result, Map configuration) {
pointerNDC = (InputSlot) inputSlots.get(0);
cameraToWorld = (InputSlot) inputSlots.get(1);
out = result;
if (configuration != null)
try {
gain = ((Double) configuration.get("gain")).doubleValue();
} catch (Exception e) {
}
}
public void dispose() {}
public String getName() {
return "Virtual: Rotation";
}
}
public void alignContent() {
try {
bounds = calculateBoundingBox(wrap(content));
} catch (Exception e) {
return;
}
removeZeroExtends(bounds);
double scale = 1;
double[] e = bounds.getExtent();
double[] center = bounds.getCenter();
double objectSize = Math.max(Math.max(e[0], e[1]), e[2]);
scale = contentSize / objectSize;
Matrix matrix = MatrixBuilder.euclidean().scale(scale).getMatrix();
matrix.assignTo(scalingComponent);
bounds = bounds.transformByMatrix(bounds, matrix.getArray());
center = bounds.getCenter();
FactoredMatrix factoredMatrix = new FactoredMatrix(transformationComponent.getTransformation());
double angle = factoredMatrix.getRotationAngle();
double[] axis = factoredMatrix.getRotationAxis();
Matrix m =
MatrixBuilder.euclidean()
.translate(0, verticalOffset, 0)
.rotate(angle, axis)
.translate(-center[0], -bounds.getMinY(), -center[2])
.getMatrix();
m.assignTo(transformationComponent);
bounds = bounds.transformByMatrix(bounds, m.getArray());
}
public ToolEvent process(VirtualDeviceContext context) throws MissingSlotException {
if (context.getEvent().getInputSlot() == cameraToWorld) return null;
DoubleArray pointer = context.getTransformationMatrix(pointerNDC);
if (pointer == null) throw new MissingSlotException(pointerNDC);
if (oldX == Integer.MAX_VALUE) {
oldX = pointer.getValueAt(3);
oldY = pointer.getValueAt(7);
return null;
}
double x = pointer.getValueAt(3);
double y = pointer.getValueAt(7);
double dist = x * x + y * y;
double z = 2 > dist ? Math.sqrt(2 - dist) : 0;
Rn.setToValue(mouseCoords, x, y, z);
mouseCoords = Rn.normalize(mouseCoords, mouseCoords);
double[] cross = Rn.crossProduct(null, mouseCoordsOld, mouseCoords);
double angle = gain * Math.asin(Rn.euclideanNorm(cross));
double[] cross4 = {cross[0], cross[1], cross[2], 0};
cross = new Matrix(context.getTransformationMatrix(cameraToWorld)).multiplyVector(cross4);
result.assignFrom(P3.makeRotationMatrix(null, cross, angle));
Rn.setToValue(mouseCoordsOld, x, y, z);
return new ToolEvent(this, context.getEvent().getTimeStamp(), out, da);
}
