Writing 3D text with PGraphicsPDF: "vertex(x, y, u, v) is not available with this renderer."

in Core Library Questions • 2 years ago

I'm trying to produce a PDF that contains scaled and rotated text. The text shows up on the screen, but doesn't appear in the PDF. I get a message in the console -- "vertex(x, y, u, v) is not available with this renderer" -- that I haven't seen elsewhere in the forums.

I'm attaching a minimal sketch.

Does anyone have any idea what the problem is & how to fix it?

Many thanks,

Dave

import processing.core.*;
import processing.pdf.PGraphicsPDF;
float rotx;
float roty;
boolean record;
PFont font;
void setup() {
size(400, 450, P3D);
font = createFont("Arial", 100);
rotx= -0.27460164f;
roty = -2.2146025f;
record = true; // print the first frame
}
void draw() {
if (record) {
System.out.println("Writing to PDF...\n");
PGraphics pdf = beginRaw(PDF, "output.pdf");
//pdf.hint(ENABLE_NATIVE_FONTS);
//for(String s : PGraphicsPDF.listFonts()) System.out.println(s);
//pdf.textMode(SHAPE);
pdf.textFont(font);
}
background(255);
translate(width/2.0f, height/2.0f, -100);
rotateX(rotx);
rotateY(roty);
scale(2);
pushStyle();
// draw axes
stroke(255,0,0);
line(-100,0,0,100,0,0);
stroke(0,255,0);
line(0,-100,0,0,100,0);
stroke(0,0,255);
line(0,0,-100,0,0,100);
popStyle();
fill(0);
translate(50,0,0);
rotate(PI/2,0,1,0);
String s = "Text";
text(s,0,0,0);
if (record) {
endRaw();
record = false;
}
}
// Hit 'r' to record a single frame
public void keyPressed() {
if (key == 'r') {
record = true;
}
}

Replies(4)

PhiLho

Re: Writing 3D text with PGraphicsPDF: "vertex(x, y, u, v) is not available with this renderer."

2 years ago

PGraphicsPDF is based on PGraphicsJava2D and, as the name implies, they don't do 3D.

d_h_benson

Re: Writing 3D text with PGraphicsPDF: "vertex(x, y, u, v) is not available with this renderer."

2 years ago

Are you sure, PhiLo?

Quoting from the documentation: " The PDF library can flatten 3D data into a 2D vector file[...]"

(http://processing.org/reference/libraries/pdf/index.html)

Anyway, the 3D shapes (lines, polygon, etc.) render just fine in my PDF, it's only the text that's causing problems.

So I think the problem's somewhere else...

Thanks all the same for your response,

PhiLho

Re: Writing 3D text with PGraphicsPDF: "vertex(x, y, u, v) is not available with this renderer."

2 years ago

Yes, I vaguely recalled something like that, so let's say there are some limitations...*
From the source code:

vertex(float x, float y, float z)
vertex(float x, float y, float z, float u, float v)
point(float x, float y, float z)
bezier(float x1, float y1, float z1,
float x2, float y2, float z2,
float x3, float y3, float z3,
float x4, float y4, float z4)
curve(float x1, float y1, float z1,
float x2, float y2, float z2,
float x3, float y3, float z3,
float x4, float y4, float z4)
translate(float tx, float ty, float tz)
scale(float x, float y, float z)
applyMatrix(float n00, float n01, float n02, float n03,
float n10, float n11, float n12, float n13,
float n20, float n21, float n22, float n23,
float n30, float n31, float n32, float n33)

are not implemented for Java2D and PDF.
Surprisingly, we have translate(width/2, height/2, -200); in the page you point to. And indeed it works. Not too sure where it goes...
The vertex() call is probably internal to one of your calls, perhaps text().

d_h_benson

Re: Writing 3D text with PGraphicsPDF: "vertex(x, y, u, v) is not available with this renderer."

2 years ago

Hi Phi.lho,

Ok, I understand what you mean about PGraphicsPDF being a 2D renderer.

For the benefit of anyone who stumbles on this thread, my original problem was that I wanted to create a PDF from a processing sketch, and I wanted the PDF to include (vectorized) scaled and rotated text. As Phi.lho says, this doesn't seem to be supported by PGraphicsPDF. I had to make do with vectorized text that wasn't rotated, and that was written to screen coordinates, rather than world coordinates.

A sketch showing how to accomplish this (more modest) goal is below.

Cheers,

import processing.core.*;
import processing.pdf.PGraphicsPDF;
float rotx;
float roty;
boolean record;
PFont font;
void setup() {
size(400, 450, P3D);
font = createFont("Arial", 12);
rotx= -0.27460164f;
roty = -2.2146025f;
record = true; // print the first frame
}
void draw() {
if (record) {
System.out.println("Writing to PDF...\n");
PGraphics pdf = beginRaw(PDF, "output.pdf");
pdf.textMode(SHAPE);
pdf.hint(ENABLE_NATIVE_FONTS);
pdf.textFont(font);
pdf.fill(0);
pdf.text("This text will appear in output.pdf",width/2,height/2);
}
background(255);
translate(width/2.0f, height/2.0f, -100);
rotateX(rotx);
rotateY(roty);
scale(2);
pushStyle();
// draw axes
stroke(255,0,0);
line(-100,0,0,100,0,0);
stroke(0,255,0);
line(0,-100,0,0,100,0);
stroke(0,0,255);
line(0,0,-100,0,0,100);
popStyle();
fill(0);
translate(50,0,100);
rotate(PI/2,0,1,0);
String s = "This text won't appear in output.pdf";
textFont(font);
text(s,0,0,0);
if (record) {
endRaw();
record = false;
}
}
// Hit 'r' to record a single frame
public void keyPressed() {
if (key == 'r') {
record = true;
}
}

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