/*
* This file is part of Applied Energistics 2.
* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
*
* Applied Energistics 2 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.
*
* Applied Energistics 2 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 Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
*/
package appeng.client.render.cablebus;
import java.util.ArrayList;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.List;
import javax.vecmath.Vector4f;
import com.google.common.base.Preconditions;
import net.minecraft.client.renderer.block.model.BakedQuad;
import net.minecraft.client.renderer.texture.TextureAtlasSprite;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.client.renderer.vertex.VertexFormat;
import net.minecraft.client.renderer.vertex.VertexFormatElement;
import net.minecraft.util.EnumFacing;
import net.minecraftforge.client.model.pipeline.UnpackedBakedQuad;
import appeng.client.render.VertexFormats;
/**
* Builds the quads for a cube.
*/
public class CubeBuilder
{
private VertexFormat format;
private final List<BakedQuad> output;
private final EnumMap<EnumFacing, TextureAtlasSprite> textures = new EnumMap<>( EnumFacing.class );
private EnumSet<EnumFacing> drawFaces = EnumSet.allOf( EnumFacing.class );
private final EnumMap<EnumFacing, Vector4f> customUv = new EnumMap<>( EnumFacing.class );
private byte[] uvRotations = new byte[EnumFacing.values().length];
private int color = 0xFFFFFFFF;
private boolean renderFullBright;
public CubeBuilder( VertexFormat format, List<BakedQuad> output )
{
this.output = output;
this.format = format;
}
public CubeBuilder( VertexFormat format )
{
this( format, new ArrayList<>( 6 ) );
}
public void addCube( float x1, float y1, float z1, float x2, float y2, float z2 )
{
x1 /= 16.0f;
y1 /= 16.0f;
z1 /= 16.0f;
x2 /= 16.0f;
y2 /= 16.0f;
z2 /= 16.0f;
// If brightness is forced to specific values, extend the vertex format to contain the multi-texturing lightmap
// offset
VertexFormat savedFormat = null;
if( renderFullBright )
{
savedFormat = format;
format = VertexFormats.getFormatWithLightMap( format );
}
for( EnumFacing face : drawFaces )
{
putFace( face, x1, y1, z1, x2, y2, z2 );
}
// Restore old format
if( savedFormat != null )
{
format = savedFormat;
}
}
public void addQuad( EnumFacing face, float x1, float y1, float z1, float x2, float y2, float z2 )
{
// If brightness is forced to specific values, extend the vertex format to contain the multi-texturing lightmap
// offset
VertexFormat savedFormat = null;
if( renderFullBright )
{
savedFormat = format;
format = new VertexFormat( savedFormat );
if( !format.getElements().contains( DefaultVertexFormats.TEX_2S ) )
{
format.addElement( DefaultVertexFormats.TEX_2S );
}
}
putFace( face, x1, y1, z1, x2, y2, z2 );
// Restore old format
if( savedFormat != null )
{
format = savedFormat;
}
}
private static final class UvVector
{
float u1;
float u2;
float v1;
float v2;
}
private void putFace( EnumFacing face, float x1, float y1, float z1, float x2, float y2, float z2 )
{
TextureAtlasSprite texture = textures.get( face );
UnpackedBakedQuad.Builder builder = new UnpackedBakedQuad.Builder( format );
builder.setTexture( texture );
builder.setQuadOrientation( face );
UvVector uv = new UvVector();
// The user might have set specific UV coordinates for this face
Vector4f customUv = this.customUv.get( face );
if( customUv != null )
{
uv.u1 = texture.getInterpolatedU( customUv.x );
uv.v1 = texture.getInterpolatedV( customUv.y );
uv.u2 = texture.getInterpolatedU( customUv.z );
uv.v2 = texture.getInterpolatedV( customUv.w );
}
else
{
uv = getDefaultUv( face, texture, x1, y1, z1, x2, y2, z2 );
}
switch( face )
{
case DOWN:
putVertexTR( builder, face, x2, y1, z1, uv );
putVertexBR( builder, face, x2, y1, z2, uv );
putVertexBL( builder, face, x1, y1, z2, uv );
putVertexTL( builder, face, x1, y1, z1, uv );
break;
case UP:
putVertexTL( builder, face, x1, y2, z1, uv );
putVertexBL( builder, face, x1, y2, z2, uv );
putVertexBR( builder, face, x2, y2, z2, uv );
putVertexTR( builder, face, x2, y2, z1, uv );
break;
case NORTH:
putVertexBR( builder, face, x2, y2, z1, uv );
putVertexTR( builder, face, x2, y1, z1, uv );
putVertexTL( builder, face, x1, y1, z1, uv );
putVertexBL( builder, face, x1, y2, z1, uv );
break;
case SOUTH:
putVertexBL( builder, face, x1, y2, z2, uv );
putVertexTL( builder, face, x1, y1, z2, uv );
putVertexTR( builder, face, x2, y1, z2, uv );
putVertexBR( builder, face, x2, y2, z2, uv );
break;
case WEST:
putVertexTL( builder, face, x1, y1, z1, uv );
putVertexTR( builder, face, x1, y1, z2, uv );
putVertexBR( builder, face, x1, y2, z2, uv );
putVertexBL( builder, face, x1, y2, z1, uv );
break;
case EAST:
putVertexBR( builder, face, x2, y2, z1, uv );
putVertexBL( builder, face, x2, y2, z2, uv );
putVertexTL( builder, face, x2, y1, z2, uv );
putVertexTR( builder, face, x2, y1, z1, uv );
break;
}
int[] vertexData = builder.build().getVertexData();
output.add( new BakedQuad( vertexData, -1, face, texture, true, format ) );
}
private UvVector getDefaultUv( EnumFacing face, TextureAtlasSprite texture, float x1, float y1, float z1, float x2, float y2, float z2 )
{
UvVector uv = new UvVector();
switch( face )
{
case DOWN:
uv.u1 = texture.getInterpolatedU( x1 * 16 );
uv.v1 = texture.getInterpolatedV( z1 * 16 );
uv.u2 = texture.getInterpolatedU( x2 * 16 );
uv.v2 = texture.getInterpolatedV( z2 * 16 );
break;
case UP:
uv.u1 = texture.getInterpolatedU( x1 * 16 );
uv.v1 = texture.getInterpolatedV( z1 * 16 );
uv.u2 = texture.getInterpolatedU( x2 * 16 );
uv.v2 = texture.getInterpolatedV( z2 * 16 );
break;
case NORTH:
uv.u1 = texture.getInterpolatedU( x1 * 16 );
uv.v1 = texture.getInterpolatedV( 16 - y1 * 16 );
uv.u2 = texture.getInterpolatedU( x2 * 16 );
uv.v2 = texture.getInterpolatedV( 16 - y2 * 16 );
break;
case SOUTH:
uv.u1 = texture.getInterpolatedU( x1 * 16 );
uv.v1 = texture.getInterpolatedV( 16 - y1 * 16 );
uv.u2 = texture.getInterpolatedU( x2 * 16 );
uv.v2 = texture.getInterpolatedV( 16 - y2 * 16 );
break;
case WEST:
uv.u1 = texture.getInterpolatedU( z1 * 16 );
uv.v1 = texture.getInterpolatedV( 16 - y1 * 16 );
uv.u2 = texture.getInterpolatedU( z2 * 16 );
uv.v2 = texture.getInterpolatedV( 16 - y2 * 16 );
break;
case EAST:
uv.u1 = texture.getInterpolatedU( z2 * 16 );
uv.v1 = texture.getInterpolatedV( 16 - y1 * 16 );
uv.u2 = texture.getInterpolatedU( z1 * 16 );
uv.v2 = texture.getInterpolatedV( 16 - y2 * 16 );
break;
}
return uv;
}
// uv.u1, uv.v1
private void putVertexTL( UnpackedBakedQuad.Builder builder, EnumFacing face, float x, float y, float z, UvVector uv )
{
float u, v;
switch( uvRotations[face.ordinal()] )
{
default:
case 0:
u = uv.u1;
v = uv.v1;
break;
case 1: // 90° clockwise
u = uv.u1;
v = uv.v2;
break;
case 2: // 180° clockwise
u = uv.u2;
v = uv.v2;
break;
case 3: // 270° clockwise
u = uv.u2;
v = uv.v1;
break;
}
putVertex( builder, face, x, y, z, u, v );
}
// uv.u2, uv.v1
private void putVertexTR( UnpackedBakedQuad.Builder builder, EnumFacing face, float x, float y, float z, UvVector uv )
{
float u;
float v;
switch( uvRotations[face.ordinal()] )
{
default:
case 0:
u = uv.u2;
v = uv.v1;
break;
case 1: // 90° clockwise
u = uv.u1;
v = uv.v1;
break;
case 2: // 180° clockwise
u = uv.u1;
v = uv.v2;
break;
case 3: // 270° clockwise
u = uv.u2;
v = uv.v2;
break;
}
putVertex( builder, face, x, y, z, u, v );
}
// uv.u2, uv.v2
private void putVertexBR( UnpackedBakedQuad.Builder builder, EnumFacing face, float x, float y, float z, UvVector uv )
{
float u;
float v;
switch( uvRotations[face.ordinal()] )
{
default:
case 0:
u = uv.u2;
v = uv.v2;
break;
case 1: // 90° clockwise
u = uv.u2;
v = uv.v1;
break;
case 2: // 180° clockwise
u = uv.u1;
v = uv.v1;
break;
case 3: // 270° clockwise
u = uv.u1;
v = uv.v2;
break;
}
putVertex( builder, face, x, y, z, u, v );
}
// uv.u1, uv.v2
private void putVertexBL( UnpackedBakedQuad.Builder builder, EnumFacing face, float x, float y, float z, UvVector uv )
{
float u;
float v;
switch( uvRotations[face.ordinal()] )
{
default:
case 0:
u = uv.u1;
v = uv.v2;
break;
case 1: // 90° clockwise
u = uv.u2;
v = uv.v2;
break;
case 2: // 180° clockwise
u = uv.u2;
v = uv.v1;
break;
case 3: // 270° clockwise
u = uv.u1;
v = uv.v1;
break;
}
putVertex( builder, face, x, y, z, u, v );
}
private void putVertex( UnpackedBakedQuad.Builder builder, EnumFacing face, float x, float y, float z, float u, float v )
{
VertexFormat format = builder.getVertexFormat();
for( int i = 0; i < format.getElementCount(); i++ )
{
VertexFormatElement e = format.getElement( i );
switch( e.getUsage() )
{
case POSITION:
builder.put( i, x, y, z );
break;
case NORMAL:
builder.put( i, face.getFrontOffsetX(), face.getFrontOffsetY(), face.getFrontOffsetZ() );
break;
case COLOR:
// Color format is RGBA
float r = ( color >> 16 & 0xFF ) / 255f;
float g = ( color >> 8 & 0xFF ) / 255f;
float b = ( color & 0xFF ) / 255f;
float a = ( color >> 24 & 0xFF ) / 255f;
builder.put( i, r, g, b, a );
break;
case UV:
if( e.getIndex() == 0 )
{
builder.put( i, u, v );
}
else
{
// Force Brightness to 15, this is for full bright mode
// this vertex element will only be present in that case
final float lightMapU = (float) ( 15 * 0x20 ) / 0xFFFF;
final float lightMapV = (float) ( 15 * 0x20 ) / 0xFFFF;
builder.put( i, lightMapU, lightMapV );
}
break;
default:
builder.put( i );
break;
}
}
}
public void setTexture( TextureAtlasSprite texture )
{
for( EnumFacing face : EnumFacing.values() )
{
textures.put( face, texture );
}
}
public void setTextures( TextureAtlasSprite up, TextureAtlasSprite down, TextureAtlasSprite north, TextureAtlasSprite south, TextureAtlasSprite east, TextureAtlasSprite west )
{
textures.put( EnumFacing.UP, up );
textures.put( EnumFacing.DOWN, down );
textures.put( EnumFacing.NORTH, north );
textures.put( EnumFacing.SOUTH, south );
textures.put( EnumFacing.EAST, east );
textures.put( EnumFacing.WEST, west );
}
public void setTexture( EnumFacing facing, TextureAtlasSprite sprite )
{
textures.put( facing, sprite );
}
public void setDrawFaces( EnumSet<EnumFacing> drawFaces )
{
this.drawFaces = drawFaces;
}
public void setColor( int color )
{
this.color = color;
}
/**
* Sets the vertex color for future vertices to the given RGB value, and forces the alpha component to 255.
*/
public void setColorRGB( int color )
{
setColor( color | 0xFF000000 );
}
public void setColorRGB( float r, float g, float b )
{
setColorRGB( (int) ( r * 255 ) << 16 | (int) ( g * 255 ) << 8 | (int) ( b * 255 ) );
}
public void setRenderFullBright( boolean renderFullBright )
{
this.renderFullBright = renderFullBright;
}
public void setCustomUv( EnumFacing facing, float u1, float v1, float u2, float v2 )
{
customUv.put( facing, new Vector4f( u1, v1, u2, v2 ) );
}
public void setUvRotation( EnumFacing facing, int rotation )
{
if( rotation == 2 )
{
rotation = 3;
}
else if( rotation == 3 )
{
rotation = 2;
}
Preconditions.checkArgument( rotation >= 0 && rotation <= 3, "rotation" );
uvRotations[facing.ordinal()] = (byte) rotation;
}
public List<BakedQuad> getOutput()
{
return output;
}
}