gered/gdx-toolbox
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

add "addGrid" method to CustomGridTextureAtlas to auto-add tiles in a grid layout

Browse source
This commit is contained in:
Gered 2013-07-18 09:02:27 -04:00
parent 54823cd804
commit 69c65637f9
1 changed files with 37 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

37
src/com/blarg/gdx/graphics/atlas/CustomGridTextureAtlas.java
View file

@ -41,6 +41,43 @@ public class CustomGridTextureAtlas extends TextureAtlas {
return tiles.size - 1;
}
public int addGrid(int startX, int startY, int tileWidth, int tileHeight, int numTilesX, int numTilesY, int tileBorder) {
int actualTileWidth = tileWidth + tileBorder;
int actualTileHeight = tileHeight + tileBorder;
int numAdded = 0;
for (int y = 0; y < numTilesY; ++y)
{
for (int x = 0; x < numTilesX; ++x)
{
// pixel location/dimensions
int left = startX + tileBorder + x * actualTileWidth;
int top = startY + tileBorder + y * actualTileHeight;
int right = left + actualTileWidth - tileBorder;
int bottom = top + actualTileHeight - tileBorder;
// texture coordinates
// HACK: subtract edgeCoordOffset from the bottom right edges to
// get around floating point rounding errors (adjacent tiles will
// slightly bleed in otherwise)
float u = (left - tileBorder + edgeCoordOffset) / (float)texture.getWidth();
float v = (top - tileBorder + edgeCoordOffset) / (float)texture.getHeight();
float u2 = ((float)right + tileBorder - edgeCoordOffset) / (float)texture.getWidth();
float v2 = ((float)bottom + tileBorder - edgeCoordOffset) / (float)texture.getHeight();
TextureRegion tile = new TextureRegion();
tile.setTexture(texture);
tile.setRegion(u, v, u2, v2);
tiles.add(tile);
++numAdded;
}
}
return numAdded;
}
public void reset() {
tiles.clear();
}