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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1051 | chris | 1 | package com.gebauz.bauzoid.graphics.sprite; |
| 2 | |||
| 3 | import com.badlogic.gdx.graphics.Texture; |
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| 4 | |||
| 5 | /** A region that addresses a single rectangular region inside a sprite's texture. */ |
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| 6 | public class SpriteRegion |
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| 7 | { |
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| 8 | // Constants======================================================================================== |
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| 9 | |||
| 10 | // Embedded Types=================================================================================== |
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| 11 | |||
| 12 | // Fields=========================================================================================== |
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| 13 | |||
| 14 | public float left = 0; |
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| 15 | public float top = 0; |
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| 16 | public float bottom = 0; |
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| 17 | public float right = 0; |
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| 18 | |||
| 19 | private Sprite mParentSprite = null; |
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| 20 | private int mRegionIndex = -1; |
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| 21 | |||
| 22 | // Methods========================================================================================== |
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| 23 | |||
| 24 | /** Constructor. */ |
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| 25 | public SpriteRegion(Sprite parentSprite, int index) |
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| 26 | { |
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| 27 | mParentSprite = parentSprite; |
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| 28 | mRegionIndex = index; |
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| 29 | } |
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| 30 | |||
| 31 | /** Constructor - sets region by relative texture coordinates. */ |
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| 32 | public SpriteRegion(Sprite parentSprite, int index, float relativeTop, float relativeLeft, float relativeRight, float relativeBottom) |
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| 33 | { |
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| 34 | this(parentSprite, index, relativeTop, relativeLeft, relativeRight - relativeTop, relativeBottom - relativeTop, false); |
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| 35 | } |
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| 36 | |||
| 37 | /** Constructor - sets region by absolute texture coordinates in texels. Requires reference texture to calculate relative texture coordinates. */ |
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| 38 | public SpriteRegion(Sprite parentSprite, int index, float x, float y, float w, float h, boolean absolute) |
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| 39 | { |
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| 40 | this(parentSprite, index); |
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| 41 | if (absolute) |
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| 42 | setAbsolute(parentSprite.getTexture(), x, y, w, h); |
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| 43 | else |
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| 44 | setRelative(x, y, w, h); |
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| 45 | } |
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| 46 | |||
| 47 | // Getters/Setters================================================================================== |
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| 48 | |||
| 49 | /** Set region by relative texel coordinates. |
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| 50 | * Coordinates are in relative space [0..1]. |
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| 51 | */ |
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| 52 | public void setRelative(float x, float y, float w, float h) |
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| 53 | { |
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| 54 | left = x; |
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| 55 | top = y; |
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| 56 | right = left + w; |
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| 57 | bottom = top + h; |
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| 58 | } |
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| 59 | |||
| 60 | /** Set region by absolute pixel coordinates relative to the specified texture. |
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| 61 | * Coordinates are in absolute texel space. |
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| 62 | */ |
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| 63 | public void setAbsolute(Texture referenceTexture, float x, float y, float w, float h) |
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| 64 | { |
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| 65 | left = x / referenceTexture.getWidth(); |
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| 66 | top = y / referenceTexture.getHeight(); |
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| 67 | right = left + (w / referenceTexture.getWidth()); |
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| 68 | bottom = top + (h / referenceTexture.getHeight()); |
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| 69 | } |
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| 70 | |||
| 71 | /** Get the region's width in relative texel coordinates. */ |
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| 72 | public float getWidth() |
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| 73 | { |
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| 74 | return (right-left); |
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| 75 | } |
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| 76 | |||
| 77 | /** Get the region's height in relative texel coordinates. */ |
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| 78 | public float getHeight() |
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| 79 | { |
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| 80 | return (bottom-top); |
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| 81 | } |
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| 82 | |||
| 83 | /** Get the region's parent sprite. */ |
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| 84 | public Sprite getSprite() |
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| 85 | { |
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| 86 | return mParentSprite; |
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| 87 | } |
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| 88 | |||
| 89 | /** Get the region's index. */ |
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| 90 | public final int getRegionIndex() |
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| 91 | { |
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| 92 | return mRegionIndex; |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 |