Strange scaling issue with SVG file loaded with geomerative RG

nesnduma

Strange scaling issue with SVG file loaded with geomerative RG

in Contributed Library Questions • 2 years ago

Hello,

I am loading an SVG file within a RG object.

The sketch window is sized according to the SVG dimensions (dimensions are divided by 2 because the picture is big).

s = RG.loadShape("BelgiumC.svg");
size(int(s.width/2), int(s.height/2), JAVA2D);

However, if I want the whole picture to be shown within the window, I must reduce it further (factor 0.9) :

polyshp = RG.polygonize(s);
RG.shape(polyshp, 0, 0, 0.9 * width, 0.9 * height);

Does it come from the SVG file ? How can I modify it to solve the problem (the SVG file was created with Inkscape) ?

Thank you in advance.

Replies(7)

anchnk

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

Hum, is s a PShape object or an RShape ?
Because RG.loadShape is supposed to return an RShape object which doesn't have any width or height fields.
Maybe having a minimal version of the sketch and the svg file as well could help to see what the problem is.
Because it's hard to get the problem being blame.

nesnduma

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

Here we go:

import geomerative.*;
RShape s;
RShape polyshp;
RPoint[] points;
void setup() {
//size(640, 480, JAVA2D);
RG.init(this);
RG.ignoreStyles(true);
s = RG.loadShape("BelgiumC.svg");
points = s.getPoints();
size(int(s.width/2), int(s.height/2), JAVA2D);
rectMode(CENTER);
smooth();
background(192);
frameRate(120);
}
void draw() {
strokeWeight(1);
fill(128, 128, 0);
stroke(0, 0, 0);
polyshp = RG.polygonize(s);
RG.shape(polyshp, 0, 0, 0.9 * width, 0.9 * height);
// capture points
println(points.length);
stroke(255, 0, 0);
fill(255, 255, 255);
translate(0,0,0);
/*
for (int i = 0; i < points.length ; i = i + 50) {
rect(((points[i].x) * (width/ (s.width))), ((points[i].y) * (height/ (s.height))), 10, 10);
}
*/
}
void mousePressed() {
for (int i = 0; i < 500 ; i++) {
int a = points.length - 1;
float aa = points[int(random(0, a))].x * (width/ s.width) * 0.9;
int b = points.length - 1;
float bb = points[int(random(0, b))].y * (height/ s.height) * 0.9;
int c = points.length - 1;
float cc = points[int(random(0, c))].x * (width/ s.width) * 0.9;
int d = points.length - 1;
float dd = points[int(random(0, d))].y * (height/ s.height) * 0.9;
translate (aa, bb);
line(0, 0, cc-aa, dd-bb);
}
//line(aa, bb, cc, dd);
}

PhiLho

Re: Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

That's a question (changed type), and about a contributed library (moved the thread). Thanks to try and ease the work of moderators in the future. ^_^

anchnk

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

Sorry for my previous post i was a bit confused.

Ok i got it working now but i can't still understand what your problem is.

I tested with an arbitrary svg file and it's displayed fully when i use RG.shape(polyshp, 0, 0, width, height);

What is exactly your problem ?
Have pictures to help me figure it out ?
Or maybe somebody can figure it.

nesnduma

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

@phi.lho: sorry for the wrong place and setting.

@anchnk: you can get the SVG file here. You will see that removing the reduction factor causes a part of the picture to go beyond the window boundaries.

PhiLho

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

The SVG file reports: width="1198" height="985" (in the header of the file). Geomerative reports the same dimensions.

Getting the min and max X and Y in the path, I get:
minX, maxX: -35.46966 995
minY, maxY: -38.15827 944.93465
Which is slightly smaller than the above values, so it is OK.

So, I suppose the answer is left to the author of Geomerative.
Note: if you display the 1:1 image at coordinates -27, -22, it almost fits the window.

nesnduma

Re: Strange scaling issue with SVG file loaded with geomerative RG

2 years ago

Thanks phi.lho, getting min and max x/y is probably the way to go.

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