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Added print() method to PMatrix (Fixes #811) #1355

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Added print() method to PMatrix (Fixes #811) #1355

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140e8fc
Add print method to PMatrix interface
Sumamasonia Dec 7, 2025
125bc8e
docs: add print() method declaration to PMatrix interface
Sumamasonia Jan 29, 2026
02ba4c1
refactor: implement toString and override print in PMatrix2D
Sumamasonia Jan 29, 2026
da0faa6
refactor: implement toString and override print in PMatrix3D
Sumamasonia Jan 29, 2026
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4 changes: 4 additions & 0 deletions core/src/processing/core/PMatrix.java
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Original file line number Diff line number Diff line change
Expand Up @@ -205,4 +205,8 @@ public void preApply(float n00, float n01, float n02, float n03,
* @return the determinant of the matrix
*/
public float determinant();
/**
* Print the matrix data to the console.
*/
public void print();
}
25 changes: 7 additions & 18 deletions core/src/processing/core/PMatrix2D.java
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Original file line number Diff line number Diff line change
Expand Up @@ -466,26 +466,15 @@ public float determinant() {
//////////////////////////////////////////////////////////////


@Override
public void print() {
int big = (int) abs(max(PApplet.max(abs(m00), abs(m01), abs(m02)),
PApplet.max(abs(m10), abs(m11), abs(m12))));

int digits = 1;
if (Float.isNaN(big) || Float.isInfinite(big)) { // avoid infinite loop
digits = 5;
} else {
while ((big /= 10) != 0) digits++; // cheap log()
}

System.out.println(PApplet.nfs(m00, digits, 4) + " " +
PApplet.nfs(m01, digits, 4) + " " +
PApplet.nfs(m02, digits, 4));

System.out.println(PApplet.nfs(m10, digits, 4) + " " +
PApplet.nfs(m11, digits, 4) + " " +
PApplet.nfs(m12, digits, 4));
System.out.print(toString());
}

System.out.println();
@Override
public String toString() {
return PApplet.nfs(m00, 1, 4) + " " + PApplet.nfs(m01, 1, 4) + " " + PApplet.nfs(m02, 1, 4) + "\n" +
PApplet.nfs(m10, 1, 4) + " " + PApplet.nfs(m11, 1, 4) + " " + PApplet.nfs(m12, 1, 4) + "\n";
}


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52 changes: 9 additions & 43 deletions core/src/processing/core/PMatrix3D.java
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Original file line number Diff line number Diff line change
Expand Up @@ -809,52 +809,18 @@ protected boolean invApply(float n00, float n01, float n02, float n03,
//////////////////////////////////////////////////////////////


@Override
public void print() {
/*
System.out.println(m00 + " " + m01 + " " + m02 + " " + m03 + "\n" +
m10 + " " + m11 + " " + m12 + " " + m13 + "\n" +
m20 + " " + m21 + " " + m22 + " " + m23 + "\n" +
m30 + " " + m31 + " " + m32 + " " + m33 + "\n");
*/
int big = (int) Math.abs(max(max(max(max(abs(m00), abs(m01)),
max(abs(m02), abs(m03))),
max(max(abs(m10), abs(m11)),
max(abs(m12), abs(m13)))),
max(max(max(abs(m20), abs(m21)),
max(abs(m22), abs(m23))),
max(max(abs(m30), abs(m31)),
max(abs(m32), abs(m33))))));

int digits = 1;
if (Float.isNaN(big) || Float.isInfinite(big)) { // avoid infinite loop
digits = 5;
} else {
while ((big /= 10) != 0) digits++; // cheap log()
}

System.out.println(PApplet.nfs(m00, digits, 4) + " " +
PApplet.nfs(m01, digits, 4) + " " +
PApplet.nfs(m02, digits, 4) + " " +
PApplet.nfs(m03, digits, 4));

System.out.println(PApplet.nfs(m10, digits, 4) + " " +
PApplet.nfs(m11, digits, 4) + " " +
PApplet.nfs(m12, digits, 4) + " " +
PApplet.nfs(m13, digits, 4));

System.out.println(PApplet.nfs(m20, digits, 4) + " " +
PApplet.nfs(m21, digits, 4) + " " +
PApplet.nfs(m22, digits, 4) + " " +
PApplet.nfs(m23, digits, 4));

System.out.println(PApplet.nfs(m30, digits, 4) + " " +
PApplet.nfs(m31, digits, 4) + " " +
PApplet.nfs(m32, digits, 4) + " " +
PApplet.nfs(m33, digits, 4));

System.out.println();
System.out.print(toString());
}

@Override
public String toString() {
return PApplet.nfs(m00, 1, 4) + " " + PApplet.nfs(m01, 1, 4) + " " + PApplet.nfs(m02, 1, 4) + " " + PApplet.nfs(m03, 1, 4) + "\n" +
PApplet.nfs(m10, 1, 4) + " " + PApplet.nfs(m11, 1, 4) + " " + PApplet.nfs(m12, 1, 4) + " " + PApplet.nfs(m13, 1, 4) + "\n" +
PApplet.nfs(m20, 1, 4) + " " + PApplet.nfs(m21, 1, 4) + " " + PApplet.nfs(m22, 1, 4) + " " + PApplet.nfs(m23, 1, 4) + "\n" +
PApplet.nfs(m30, 1, 4) + " " + PApplet.nfs(m31, 1, 4) + " " + PApplet.nfs(m32, 1, 4) + " " + PApplet.nfs(m33, 1, 4) + "\n";
}

//////////////////////////////////////////////////////////////

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