/**
* Sets this {@link Matrix4} to a world matrix with the specified cardinal axis and the origin at
* the provided position.
*
* @param position {@link Vector3} The position to use as the origin of the world coordinates.
* @param forward {@link Vector3} The direction of the forward (z) vector.
* @param up {@link Vector3} The direction of the up (y) vector.
* @return A reference to this {@link Matrix4} to facilitate chaining.
*/
@NonNull
public Matrix4 setToWorld(
@NonNull Vector3 position, @NonNull Vector3 forward, @NonNull Vector3 up) {
mVec1.setAll(forward).normalize(); // Forward
mVec2.setAll(mVec1).cross(up).normalize(); // Right
mVec3.setAll(mVec2).cross(mVec1).normalize(); // Up
return setAll(mVec2, mVec3, mVec1.multiply(-1d), position);
}
public Vector3 calculatePos(int x, int y, Object3D object3D) {
Matrix4 mViewMatrix = getCurrentCamera().getViewMatrix();
Matrix4 mProjectionMatrix = getCurrentCamera().getProjectionMatrix();
double[] mNearPos4 = new double[4];
double[] mFarPos4 = new double[4];
Vector3 mNearPos = new Vector3();
Vector3 mFarPos = new Vector3();
Vector3 mNewObjPos = new Vector3();
int[] mViewport = new int[] {0, 0, getViewportWidth(), getViewportHeight()};
GLU.gluUnProject(
x,
getViewportHeight() - y,
0,
mViewMatrix.getDoubleValues(),
0,
mProjectionMatrix.getDoubleValues(),
0,
mViewport,
0,
mNearPos4,
0);
GLU.gluUnProject(
x,
getViewportHeight() - y,
1.f,
mViewMatrix.getDoubleValues(),
0,
mProjectionMatrix.getDoubleValues(),
0,
mViewport,
0,
mFarPos4,
0);
mNearPos.setAll(
mNearPos4[0] / mNearPos4[3], mNearPos4[1] / mNearPos4[3], mNearPos4[2] / mNearPos4[3]);
mFarPos.setAll(
mFarPos4[0] / mFarPos4[3], mFarPos4[1] / mFarPos4[3], mFarPos4[2] / mFarPos4[3]);
double factor =
(Math.abs(object3D.getZ()) + mNearPos.z)
/ (getCurrentCamera().getFarPlane() - getCurrentCamera().getNearPlane());
mNewObjPos.setAll(mFarPos);
mNewObjPos.subtract(mNearPos);
mNewObjPos.multiply(factor);
mNewObjPos.add(mNearPos);
return mNewObjPos;
}
/**
* Sets the components of the provided {@link Vector3} representing the scaling component of this
* {@link Matrix4}.
*
* @param vec {@link Vector3} to store the result in.
* @return {@link Vector3} representing the scaling.
*/
@NonNull
public Vector3 getScaling(@NonNull Vector3 vec) {
final double x = Math.sqrt(m[M00] * m[M00] + m[M01] * m[M01] + m[M02] * m[M02]);
final double y = Math.sqrt(m[M10] * m[M10] + m[M11] * m[M11] + m[M12] * m[M12]);
final double z = Math.sqrt(m[M20] * m[M20] + m[M21] * m[M21] + m[M22] * m[M22]);
return vec.setAll(x, y, z);
}
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mCameraOffset.setAll(
(mSeekBarX.getProgress() * 0.2f) - 10,
(mSeekBarY.getProgress() * 0.2f) - 10,
(mSeekBarZ.getProgress() * 0.2f));
((ChaseCameraRenderer) mRenderer).setCameraOffset(mCameraOffset);
}
/**
* Resets the up axis for this {@link ATransformable3D} object to the +Y axis. If this is part of
* a scene graph, the graph will be notified of the change.
*
* @return A reference to this {@link ATransformable3D} to facilitate chaining.
*/
public ATransformable3D resetUpAxis() {
mUpAxis.setAll(Vector3.getAxisVector(Vector3.Axis.Y));
if (mLookAtEnabled && mLookAtValid) {
mOrientation.lookAt(mLookAt, mUpAxis);
markModelMatrixDirty();
}
return this;
}
/**
* Sets the up axis for this {@link ATransformable3D} object. If this is part of a scene graph,
* the graph will be notified of the change.
*
* @param x double The x component of the new up axis.
* @param y double The y component of the new up axis.
* @param z double The z component of the new up axis.
* @return A reference to this {@link ATransformable3D} to facilitate chaining.
*/
public ATransformable3D setUpAxis(double x, double y, double z) {
mUpAxis.setAll(x, y, z);
if (mLookAtEnabled && mLookAtValid) {
mOrientation.lookAt(mLookAt, mUpAxis);
markModelMatrixDirty();
}
return this;
}
/**
* Utility method to move the specified number of units along the current up axis. This will also
* adjust the look at target (if a valid one is currently set).
*
* @param units {@code double} Number of units to move. If negative, movement will be in the
* "down" direction.
*/
public void moveUp(double units) {
mTempVec.setAll(WorldParameters.UP_AXIS);
mTempVec.rotateBy(mOrientation).normalize();
mTempVec.multiply(units);
mPosition.add(mTempVec);
if (mLookAtEnabled && mLookAtValid) {
mLookAt.add(mTempVec);
resetToLookAt();
}
markModelMatrixDirty();
}
/**
* Orients this {@link ATransformable3D} object to 'look at' the specified point. If this is part
* of a scene graph, the graph will be notified of the change.
*
* @param lookAt {@link Vector3} The look at target. Must not be null.
* @return A reference to this {@link ATransformable3D} to facilitate chaining.
*/
public ATransformable3D setLookAt(Vector3 lookAt) {
if (lookAt == null) {
throw new IllegalArgumentException(
"As of Rajawali v0.10, you cannot set a "
+ "null look target. If you want to remove the look target, use "
+ "clearLookAt(boolean) instead.");
}
mLookAt.setAll(lookAt);
resetToLookAt();
markModelMatrixDirty();
return this;
}
private Matrix4 createLightViewProjectionMatrix(DirectionalLight light) {
//
// -- Get the frustum corners in world space
//
mCamera.getFrustumCorners(mFrustumCorners, true);
//
// -- Get the frustum centroid
//
mFrustumCentroid.setAll(0, 0, 0);
for (int i = 0; i < 8; i++) mFrustumCentroid.add(mFrustumCorners[i]);
mFrustumCentroid.divide(8.0);
//
// --
//
BoundingBox lightBox = new BoundingBox(mFrustumCorners);
double distance = mFrustumCentroid.distanceTo(lightBox.getMin());
Vector3 lightDirection = light.getDirectionVector().clone();
lightDirection.normalize();
Vector3 lightPosition =
Vector3.subtractAndCreate(
mFrustumCentroid, Vector3.multiplyAndCreate(lightDirection, distance));
//
// --
//
mLightViewMatrix.setToLookAt(lightPosition, mFrustumCentroid, Vector3.Y);
for (int i = 0; i < 8; i++) mFrustumCorners[i].multiply(mLightViewMatrix);
BoundingBox b = new BoundingBox(mFrustumCorners);
mLightProjectionMatrix.setToOrthographic(
b.getMin().x, b.getMax().x, b.getMin().y, b.getMax().y, -b.getMax().z, -b.getMin().z);
mLightModelViewProjectionMatrix.setAll(mLightProjectionMatrix);
mLightModelViewProjectionMatrix.multiply(mLightViewMatrix);
return mLightModelViewProjectionMatrix;
}
/**
* Rotates the given {@link Vector3} by the rotation specified by this {@link Matrix4}.
*
* @param vec {@link Vector3} The vector to rotate.
*/
public void rotateVector(@NonNull Vector3 vec) {
double x = vec.x * m[M00] + vec.y * m[M01] + vec.z * m[M02];
double y = vec.x * m[M10] + vec.y * m[M11] + vec.z * m[M12];
double z = vec.x * m[M20] + vec.y * m[M21] + vec.z * m[M22];
vec.setAll(x, y, z);
}
@NonNull
public Vector3 getTranslation(Vector3 vec) {
return vec.setAll(m[M03], m[M13], m[M23]);
}
public void setCameraOffset(Vector3 offset) {
mCameraOffset.setAll(offset);
}
/**
* Sets the scale of this {@link ATransformable3D} object. If this is part of a scene graph, the
* graph will be notified of the change.
*
* @param scale {@link Vector3} Containing the scaling factor in each axis.
* @return A reference to this {@link ATransformable3D} to facilitate chaining.
*/
public ATransformable3D setScale(Vector3 scale) {
mScale.setAll(scale);
markModelMatrixDirty();
return this;
}
/**
* Sets the position of this {@link ATransformable3D}. If this is part of a scene graph, the graph
* will be notified of the change.
*
* @param x double The x coordinate new position.
* @param y double The y coordinate new position.
* @param z double The z coordinate new position.
*/
public void setPosition(double x, double y, double z) {
mPosition.setAll(x, y, z);
if (mLookAtEnabled && mLookAtValid) resetToLookAt();
markModelMatrixDirty();
}
/**
* Sets the position of this {@link ATransformable3D}. If this is part of a scene graph, the graph
* will be notified of the change.
*
* @param position {@link Vector3} The new position. This is copied into an internal store and can
* be used after this method returns.
*/
public void setPosition(Vector3 position) {
mPosition.setAll(position);
if (mLookAtEnabled && mLookAtValid) resetToLookAt();
markModelMatrixDirty();
}
