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shapes addeded #7390

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467d23c
Create BoxSideShapeBuilder.java
ifdesu Apr 22, 2024
4c7f8d5
Update BoxSideShapeBuilder.java
ifdesu Apr 22, 2024
aab121e
Create DiskShapeBuilder.java
ifdesu Apr 22, 2024
d774d9e
Create StarShapeBuilder.java
ifdesu Apr 22, 2024
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123 changes: 123 additions & 0 deletions gdx/src/com/badlogic/gdx/graphics/g3d/utils/shapebuilders/BoxSideShapeBuilder.java
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/**
* This class creates a box and allows you to ignore any side.
* To ignore the RIGHT and TOP sides, use:
* BoxSideShapeBuilder.build(builder, position, scale, IGNORE_RIGHT | IGNORE_TOP);
*
* @author if_desu
*/

package com.badlogic.gdx.graphics.g3d.utils.shapebuilders;

import com.badlogic.gdx.graphics.g3d.utils.MeshPartBuilder;
import com.badlogic.gdx.graphics.g3d.utils.MeshPartBuilder.VertexInfo;
import com.badlogic.gdx.math.Vector3;

public class BoxSideShapeBuilder {
public static int IGNORE_NOTHING = 0;
public static int IGNORE_TOP = 2; // positive y
public static int IGNORE_BOTTOM = 4; // negative y
public static int IGNORE_FRONT = 8; // posivite z
public static int IGNORE_BACK = 16; // negative z
public static int IGNORE_LEFT = 32; // negative x
public static int IGNORE_RIGHT = 64; // positive x

public static void build(MeshPartBuilder builder, Vector3 position, Vector3 scale, int ignore)
{
if ( ( ignore & IGNORE_FRONT ) == 0)
{
// z++
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(-.5f, -.5f, .5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(.5f, -.5f, .5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(.5f, .5f, .5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(-.5f, .5f, .5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

if ( ( ignore & IGNORE_RIGHT ) == 0)
{
// x++
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(.5f, -.5f, .5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(.5f, -.5f, -.5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(.5f, .5f, -.5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(.5f, .5f, .5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

if ( ( ignore & IGNORE_BACK ) == 0)
{
// z--
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(.5f, -.5f, -.5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(-.5f, -.5f, -.5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(-.5f, .5f, -.5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(.5f, .5f, -.5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

if ( ( ignore & IGNORE_LEFT ) == 0)
{
// x--
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(-.5f, -.5f, -.5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(-.5f, -.5f, .5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(-.5f, .5f, .5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(-.5f, .5f, -.5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

if ( ( ignore & IGNORE_TOP ) == 0)
{
// y++
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(-.5f, .5f, .5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(.5f, .5f, .5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(.5f, .5f, -.5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(-.5f, .5f, -.5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

if ( ( ignore & IGNORE_BOTTOM ) == 0)
{
// y--
BaseShapeBuilder.vertTmp0.setPos(BaseShapeBuilder.tmpV0.set(-.5f, -.5f, -.5f).scl(scale).add(position)).setUV(0,1);
BaseShapeBuilder.vertTmp1.setPos(BaseShapeBuilder.tmpV1.set(.5f, -.5f, -.5f).scl(scale).add(position)).setUV(1,1);
BaseShapeBuilder.vertTmp2.setPos(BaseShapeBuilder.tmpV2.set(.5f, -.5f, .5f).scl(scale).add(position)).setUV(1,0);
BaseShapeBuilder.vertTmp3.setPos(BaseShapeBuilder.tmpV3.set(-.5f, -.5f, .5f).scl(scale).add(position)).setUV(0,0);
builder.rect
(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3
);
}

}
}
39 changes: 39 additions & 0 deletions gdx/src/com/badlogic/gdx/graphics/g3d/utils/shapebuilders/DiskShapeBuilder.java
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package com.badlogic.gdx.graphics.g3d.utils.shapebuilders;
import com.badlogic.gdx.graphics.g3d.utils.MeshPartBuilder;
import com.badlogic.gdx.math.Vector3;

public class DiskShapeBuilder
{
public static void build(MeshPartBuilder builder, Vector3 position, float radius, int sides)
{
float tick = 360f / sides;
float scale = radius * 2f;

// used to rotate a triangle before put next inside builder
Vector3 up = BaseShapeBuilder.tmpV0.set(0,1,0);

Vector3 pCenter = BaseShapeBuilder.tmpV1.set(0.00000001f, 0, 0);
Vector3 p1 = BaseShapeBuilder.tmpV2.set(.5f, 0, 0);
Vector3 p2 = p1.cpy().rotate(up, tick);

for(int i = 0; i < sides; i++)
{
// adjust ( point1, point2 ) by correct scale "radius / 2" and calculate uv
BaseShapeBuilder.vertTmp0.setPos(pCenter.cpy().add(position)).setUV(.5f, .5f);
BaseShapeBuilder.vertTmp1.setPos(p1.cpy().scl(scale).add(position)).setUV(p1.x+.5f, p1.z+.5f);
BaseShapeBuilder.vertTmp2.setPos(p2.cpy().scl(scale).add(position)).setUV(p2.x+.5f, p2.z+.5f);

builder.triangle(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2);

// rotate actual triangle to create next triangle
if(i < sides - 1)
{
p1.rotate(up, tick);
p2.rotate(up, tick);
}
}
}
}
51 changes: 51 additions & 0 deletions gdx/src/com/badlogic/gdx/graphics/g3d/utils/shapebuilders/StarShapeBuilder.java
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package com.badlogic.gdx.graphics.g3d.utils.shapebuilders;
import com.badlogic.gdx.graphics.g3d.utils.MeshPartBuilder;
import com.badlogic.gdx.math.Vector3;
import com.badlogic.gdx.math.Vector2;

public class StarShapeBuilder {
public static void build(MeshPartBuilder builder, Vector3 position, int points, float outer_radius, float inner_radius, float total_angle)
{
float tick = total_angle / points;

Vector3 up = BaseShapeBuilder.tmpV0.set(0,1,0);

Vector3 p0 = BaseShapeBuilder.tmpV1.set(0.00000001f, 0, 0);
Vector3 p1 = BaseShapeBuilder.tmpV2.set(0, 0, -outer_radius);
Vector3 p2 = BaseShapeBuilder.tmpV3.set(0,0,-inner_radius).rotate(up,tick/2f);
Vector3 p3 = BaseShapeBuilder.tmpV4.set(0,0,-outer_radius).rotate(up, tick);

Vector2 uv1 = new Vector2();
Vector2 uv2 = new Vector2();
Vector2 uv3 = new Vector2();

for(int i = 0; i < points; i++)
{
uv1.set(p1.x, p1.z).nor().scl(.5f).add(.5f, .5f);
uv2.set(p2.x, p2.z).nor().scl(inner_radius * .5f / outer_radius).add(.5f, .5f);
uv3.set(p3.x, p3.z).nor().scl(.5f).add(.5f, .5f);

BaseShapeBuilder.vertTmp0.setPos(p0.x + position.x, p0.y + position.y, p0.z + position.z).setUV(.5f, .5f);
BaseShapeBuilder.vertTmp1.setPos(p1.x + position.x, p1.y + position.y, p1.z + position.z).setUV(uv1);
BaseShapeBuilder.vertTmp2.setPos(p2.x + position.x, p2.y + position.y, p2.z + position.z).setUV(uv2);
BaseShapeBuilder.vertTmp3.setPos(p3.x + position.x, p3.y + position.y, p3.z + position.z).setUV(uv3);

builder.triangle(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp1,
BaseShapeBuilder.vertTmp2);
builder.triangle(
BaseShapeBuilder.vertTmp0,
BaseShapeBuilder.vertTmp2,
BaseShapeBuilder.vertTmp3);

if(i<points-1)
{
p1.rotate(up, tick);
p2.rotate(up, tick);
p3.rotate(up, tick);
}
}
}

}