org.oscim.renderer.bucket.SymbolBucket Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of vtm Show documentation
Show all versions of vtm Show documentation
OpenGL vector map library written in Java - running on Android, iOS, Desktop and within the browser.
/*
* Copyright 2012 Hannes Janetzek
* Copyright 2016-2017 devemux86
* Copyright 2017 Longri
*
* This file is part of the OpenScienceMap project (http://www.opensciencemap.org).
*
* This program is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with
* this program. If not, see mSymbols = new List();
private final float[] points = new float[8];
private final GLMatrix rotationMatrix = new GLMatrix();
private final GLMatrix translateMatrix = new GLMatrix();
public SymbolBucket() {
super(RenderBucket.SYMBOL);
fixed = true;
}
/* TODO move sorting items to 'prepare' */
public void addSymbol(SymbolItem item) {
/* needed to calculate 'sbuf' size for compile */
numVertices += VERTICES_PER_SPRITE;
for (SymbolItem it : mSymbols) {
if (it.bitmap == item.bitmap) {
/* insert after same bitmap */
item.next = it.next;
it.next = item;
return;
}
}
mSymbols.push(item);
}
public void pushSymbol(SymbolItem item) {
/* needed to calculate 'sbuf' size for compile */
numVertices += VERTICES_PER_SPRITE;
mSymbols.push(item);
}
@Override
protected void compile(ShortBuffer vboData, ShortBuffer iboData) {
/* offset of layer data in vbo */
this.vertexOffset = vboData.position() * RenderBuckets.SHORT_BYTES;
int numIndices = 0;
prevTextures = textures;
textures = null;
TextureItem t = null;
TextureItem lastTexture = null;
for (SymbolItem it = mSymbols.head(); it != null; ) {
int width = 0, height = 0;
int x = 0;
int y = 0;
// FIXME Use simultaneously TextureAtlas and external symbols
if (it.texRegion != null) {
if (it.texRegion.texture.id == -1) {
//upload texture for give correct texID
it.texRegion.texture.upload();
}
if (textures == null || lastTexture == null || lastTexture.id != it.texRegion.texture.id) {
/* clone TextureItem to use same texID with
* multiple TextureItem */
int nextOffset = 0;
if (t != null) {
nextOffset = t.offset + t.indices;
}
t = TextureItem.clone(it.texRegion.texture);
t.offset = nextOffset;
textures = Inlist.appendItem(textures, t);
lastTexture = t;
}
TextureAtlas.Rect r = it.texRegion.rect;
x = r.x;
y = r.y;
width = r.w;
height = r.h;
} else if (it.bitmap != null) {
t = getTexture(it.bitmap);
if (t == null) {
t = new TextureItem(it.bitmap);
textures = Inlist.appendItem(textures, t);
t.offset = numIndices;
t.indices = 0;
}
width = t.width;
height = t.height;
} else { //if (to == null) {
log.debug("Bad SymbolItem");
continue;
}
short u1 = (short) (COORD_SCALE * x);
short v1 = (short) (COORD_SCALE * y);
short u2 = (short) (COORD_SCALE * (x + width));
short v2 = (short) (COORD_SCALE * (y + height));
PointF prevOffset = null;
short x1 = 0, y1 = 0, x2 = 0, y2 = 0;
float minX, minY, maxX, maxY;
/* add symbol items referencing the same bitmap */
for (SymbolItem prev = it; it != null; it = it.next) {
if (it.rotation == 0) { // without rotation
if (prev.bitmap != null && prev.bitmap != it.bitmap)
break;
if (prev.texRegion != null && prev.texRegion != it.texRegion)
break;
if (it == prev || it.offset != prevOffset) {
prevOffset = it.offset;
if (it.offset == null) {
float hw = width / 2f;
float hh = height / 2f;
x1 = (short) (COORD_SCALE * (-hw));
x2 = (short) (COORD_SCALE * (hw));
y1 = (short) (COORD_SCALE * (hh));
y2 = (short) (COORD_SCALE * (-hh));
} else {
float hw = (float) (it.offset.x * width);
float hh = (float) (it.offset.y * height);
x1 = (short) (COORD_SCALE * (-hw));
x2 = (short) (COORD_SCALE * (width - hw));
y1 = (short) (COORD_SCALE * (height - hh));
y2 = (short) (COORD_SCALE * (-hh));
}
}
/* add vertices */
short tx = (short) ((int) (COORD_SCALE * it.x) & LBIT_MASK
| (it.billboard ? 1 : 0));
short ty = (short) (COORD_SCALE * it.y);
vertexItems.add(tx, ty, x1, y1, u1, v2);
vertexItems.add(tx, ty, x1, y2, u1, v1);
vertexItems.add(tx, ty, x2, y1, u2, v2);
vertexItems.add(tx, ty, x2, y2, u2, v1);
} else { // with rotation
if (prev.bitmap != null && prev.bitmap != it.bitmap && prev.rotation != it.rotation)
break;
if (prev.texRegion != null && prev.texRegion != it.texRegion && prev.rotation != it.rotation)
break;
short offsetX, offsetY;
if (it.offset == null) {
offsetX = 0;
offsetY = 0;
} else {
offsetX = (short) (((width / 2f) - (it.offset.x * width)) * COORD_SCALE);
offsetY = (short) (((height / 2f) - (it.offset.y * height)) * COORD_SCALE);
}
float hw = width / 2f;
float hh = height / 2f;
minX = (COORD_SCALE * (-hw));
maxX = (COORD_SCALE * (hw));
minY = (COORD_SCALE * (hh));
maxY = (COORD_SCALE * (-hh));
// target drawing rectangle
{ // lower-left
points[0] = minX;
points[1] = minY;
}
{ // upper-left
points[2] = minX;
points[3] = maxY;
}
{ // upper-right
points[6] = maxX;
points[7] = maxY;
}
{ // lower-right
points[4] = maxX;
points[5] = minY;
}
if (it.rotation != 0) {
rotationMatrix.setRotation(it.rotation, 0, 0, 1);
rotationMatrix.prj2D(points, 0, 4);
}
/* add vertices */
short tx = (short) (((int) (COORD_SCALE * it.x) & LBIT_MASK
| (it.billboard ? 1 : 0)) + offsetX);
short ty = (short) ((COORD_SCALE * it.y) + offsetY);
vertexItems.add(tx, ty, points[0], points[1], u1, v2); // lower-left
vertexItems.add(tx, ty, points[2], points[3], u1, v1); // upper-left
vertexItems.add(tx, ty, points[4], points[5], u2, v2); // upper-right
vertexItems.add(tx, ty, points[6], points[7], u2, v1); // lower-right
}
/* six elements used to draw the four vertices */
t.indices += TextureBucket.INDICES_PER_SPRITE;
}
numIndices += t.indices;
}
vertexItems.compile(vboData);
for (t = prevTextures; t != null; t = t.dispose()) ;
prevTextures = null;
}
private TextureItem getTexture(Bitmap bitmap) {
TextureItem t;
for (t = prevTextures; t != null; t = t.next) {
if (t.bitmap == bitmap) {
prevTextures = Inlist.remove(prevTextures, t);
textures = Inlist.appendItem(textures, t);
t.offset = 0;
t.indices = 0;
return t;
}
}
return null;
}
public void clearItems() {
SymbolItem.pool.releaseAll(mSymbols.clear());
}
@Override
public void clear() {
super.clear();
clearItems();
}
}
© 2015 - 2025 Weber Informatics LLC | Privacy Policy