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[#200] implement isometric positioning
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67 changes: 67 additions & 0 deletions
67
2d/src/main/java/de/bitbrain/braingdx/tmx/IsometricPositionTranslator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package de.bitbrain.braingdx.tmx; | ||
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| import com.badlogic.gdx.math.Vector2; | ||
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| public class IsometricPositionTranslator implements PositionTranslator { | ||
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| private final State state; | ||
| private final Vector2 xAxis, yAxis; | ||
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| public IsometricPositionTranslator(State state) { | ||
| this.state = state; | ||
| this.xAxis = new Vector2(); | ||
| this.yAxis = new Vector2(); | ||
| } | ||
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| @Override | ||
| public float toWorldX(int indexX) { | ||
| return toWorldX(indexX * state.getCellWidth()); | ||
| } | ||
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| @Override | ||
| public float toWorldY(int indexY) { | ||
| return toWorldY(indexY * state.getCellHeight()); | ||
| } | ||
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| @Override | ||
| public float toWorldX(float mapX) { | ||
| return toWorld(mapX, 0f).x; | ||
| } | ||
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| @Override | ||
| public float toWorldY(float mapY) { | ||
| return toWorld(0f, mapY).y; | ||
| } | ||
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| @Override | ||
| public Vector2 toWorld(float x, float y) { | ||
| xAxis.set(state.getCellWidth() / 2f, -state.getCellHeight() / 2f); | ||
| yAxis.set(state.getCellWidth() / 2f, state.getCellHeight() / 2f); | ||
| float scalar = yAxis.len() / state.getCellHeight(); | ||
| return xAxis.nor().scl(x).scl(scalar) | ||
| .add(yAxis.nor().scl(y).scl(scalar)) | ||
| .add(0f, state.getCellHeight() / 2f); | ||
| } | ||
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| @Override | ||
| public float toMapX(float worldX) { | ||
| return worldX; | ||
| } | ||
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| @Override | ||
| public float toMapY(float worldY) { | ||
| return worldY; | ||
| } | ||
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| @Override | ||
| public int toIndexX(float worldX) { | ||
| float mapX = toMapX(worldX); | ||
| return (int) Math.floor(mapX / state.getCellWidth()); | ||
| } | ||
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| @Override | ||
| public int toIndexY(float worldY) { | ||
| float mapY = toMapY(worldY); | ||
| return (int) Math.floor(mapY / state.getCellHeight()); | ||
| } | ||
| } |
61 changes: 61 additions & 0 deletions
61
2d/src/main/java/de/bitbrain/braingdx/tmx/OrthogonalPositionTranslator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| package de.bitbrain.braingdx.tmx; | ||
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| import com.badlogic.gdx.math.Vector2; | ||
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| public class OrthogonalPositionTranslator implements PositionTranslator { | ||
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| private final State state; | ||
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| public OrthogonalPositionTranslator(State state) { | ||
| this.state = state; | ||
| } | ||
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| @Override | ||
| public float toWorldX(int indexX) { | ||
| return (float) Math.floor(indexX * state.getCellWidth()); | ||
| } | ||
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| @Override | ||
| public float toWorldY(int indexY) { | ||
| return (float) Math.floor(indexY * state.getCellHeight()); | ||
| } | ||
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| @Override | ||
| public float toWorldX(float mapX) { | ||
| return mapX; | ||
| } | ||
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| @Override | ||
| public float toWorldY(float mapY) { | ||
| return mapY; | ||
| } | ||
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| @Override | ||
| public Vector2 toWorld(float x, float y) { | ||
| return new Vector2(x, y); | ||
| } | ||
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| @Override | ||
| public float toMapX(float worldX) { | ||
| return worldX; | ||
| } | ||
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| @Override | ||
| public float toMapY(float worldY) { | ||
| return worldY; | ||
| } | ||
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| @Override | ||
| public int toIndexX(float worldX) { | ||
| return calculateIndex(worldX, state.getCellWidth()); | ||
| } | ||
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| @Override | ||
| public int toIndexY(float worldY) { | ||
| return calculateIndex(worldY, state.getCellHeight()); | ||
| } | ||
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| private static int calculateIndex(float value, float cellSize) { | ||
| return (int) Math.round(Math.floor(value / cellSize)); | ||
| } | ||
| } |
28 changes: 28 additions & 0 deletions
28
2d/src/main/java/de/bitbrain/braingdx/tmx/PositionTranslator.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package de.bitbrain.braingdx.tmx; | ||
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| import com.badlogic.gdx.math.Vector2; | ||
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| /** | ||
| * Translates positions depending on the current map orientation | ||
| */ | ||
| public interface PositionTranslator { | ||
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| float toWorldX(int indexX); | ||
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| float toWorldY(int indexY); | ||
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| float toWorldX(float mapX); | ||
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| float toWorldY(float mapY); | ||
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| Vector2 toWorld(float x, float y); | ||
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| float toMapX(float worldX); | ||
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| float toMapY(float worldY); | ||
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| int toIndexX(float worldX); | ||
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| int toIndexY(float worldY); | ||
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| } |
5 changes: 5 additions & 0 deletions
5
2d/src/main/java/de/bitbrain/braingdx/tmx/PositionTranslatorFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| package de.bitbrain.braingdx.tmx; | ||
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| interface PositionTranslatorFactory { | ||
| PositionTranslator create(State state); | ||
| } |
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