mirror of
https://github.com/EsotericSoftware/spine-runtimes.git
synced 2026-03-26 22:49:01 +08:00
[libgdx] Fixed up software clipping test
This commit is contained in:
badlogic
parent
23fd36a5f1
commit
b8a603d6af
@ -6,6 +6,7 @@ import org.lwjgl.opengl.GL11;
|
||||
import com.badlogic.gdx.ApplicationAdapter;
|
||||
import com.badlogic.gdx.Gdx;
|
||||
import com.badlogic.gdx.Input.Buttons;
|
||||
import com.badlogic.gdx.Input.Keys;
|
||||
import com.badlogic.gdx.backends.lwjgl.LwjglApplication;
|
||||
import com.badlogic.gdx.backends.lwjgl.LwjglApplicationConfiguration;
|
||||
import com.badlogic.gdx.graphics.Color;
|
||||
@ -16,9 +17,11 @@ import com.badlogic.gdx.graphics.g2d.PolygonSpriteBatch;
|
||||
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
|
||||
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;
|
||||
import com.badlogic.gdx.math.Vector3;
|
||||
import com.badlogic.gdx.utils.Array;
|
||||
import com.badlogic.gdx.utils.FloatArray;
|
||||
import com.badlogic.gdx.utils.ShortArray;
|
||||
import com.esotericsoftware.spine.utils.Clipper;
|
||||
import com.esotericsoftware.spine.utils.ConvexDecomposer;
|
||||
|
||||
public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
OrthographicCamera sceneCamera;
|
||||
@ -27,11 +30,8 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
Texture image;
|
||||
|
||||
float[] triangleOutline = {100, 100, 300, 100, 200, 300};
|
||||
float[] triangle = {
|
||||
100, 100, Color.WHITE.toFloatBits(), 0, 1,
|
||||
300, 100, Color.WHITE.toFloatBits(), 1, 1,
|
||||
200, 300, Color.WHITE.toFloatBits(), 0.5f, 0
|
||||
};
|
||||
float[] triangle = {100, 100, Color.WHITE.toFloatBits(), 0, 1, 300, 100, Color.WHITE.toFloatBits(), 1, 1, 200, 300,
|
||||
Color.WHITE.toFloatBits(), 0.5f, 0};
|
||||
short[] triangleIndices = {0, 1, 2};
|
||||
FloatArray clippingPolygon = new FloatArray();
|
||||
FloatArray clippedPolygon = new FloatArray();
|
||||
@ -42,6 +42,7 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
boolean isCreatingClippingArea = false;
|
||||
Vector3 tmp = new Vector3();
|
||||
Clipper clipper;
|
||||
ConvexDecomposer decomposer;
|
||||
|
||||
@Override
|
||||
public void create () {
|
||||
@ -49,6 +50,7 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
shapes = new ShapeRenderer();
|
||||
polyBatcher = new PolygonSpriteBatch();
|
||||
clipper = new Clipper();
|
||||
decomposer = new ConvexDecomposer();
|
||||
image = new Texture("skin/skin.png");
|
||||
}
|
||||
|
||||
@ -76,14 +78,18 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
isCreatingClippingArea = true;
|
||||
}
|
||||
|
||||
clippingPolygon.add(tmp.x);
|
||||
clippingPolygon.add(tmp.y);
|
||||
clippingPolygon.add((int)tmp.x);
|
||||
clippingPolygon.add((int)tmp.y);
|
||||
|
||||
if (Gdx.input.isButtonPressed(Buttons.RIGHT)) {
|
||||
isCreatingClippingArea = false;
|
||||
clip();
|
||||
}
|
||||
}
|
||||
|
||||
if (Gdx.input.isKeyJustPressed(Keys.T)) {
|
||||
clip();
|
||||
}
|
||||
}
|
||||
|
||||
private void renderScene () {
|
||||
@ -94,10 +100,12 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
polyBatcher.begin();
|
||||
polyBatcher.disableBlending();
|
||||
|
||||
if (clippedPolygon.size == 0) {
|
||||
// clipped polygon
|
||||
if (clippedPolygonVertices.size == 0) {
|
||||
polyBatcher.draw(image, triangle, 0, 15, triangleIndices, 0, 3);
|
||||
} else {
|
||||
polyBatcher.draw(image, clippedPolygonVertices.items, 0, clippedPolygonVertices.size, clippedPolygonIndices.items, 0, clippedPolygonIndices.size);
|
||||
polyBatcher.draw(image, clippedPolygonVertices.items, 0, clippedPolygonVertices.size, clippedPolygonIndices.items, 0,
|
||||
clippedPolygonIndices.size);
|
||||
}
|
||||
polyBatcher.end();
|
||||
|
||||
@ -107,7 +115,7 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
shapes.setColor(Color.GREEN);
|
||||
shapes.polygon(triangleOutline);
|
||||
|
||||
// clipped polygons
|
||||
// clipping area
|
||||
shapes.setColor(Color.RED);
|
||||
if (isCreatingClippingArea) {
|
||||
tmp.set(Gdx.input.getX(), Gdx.input.getY(), 0);
|
||||
@ -134,41 +142,41 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
shapes.polygon(clippingPolygon.items, 0, clippingPolygon.size);
|
||||
}
|
||||
|
||||
// edge normals
|
||||
shapes.setColor(Color.YELLOW);
|
||||
if (clippingPolygon.size > 2) {
|
||||
boolean clockwise = Clipper.isClockwise(clippingPolygon);
|
||||
for (int i = 0; i < clippingPolygon.size; i += 2) {
|
||||
float x = clippingPolygon.get(i);
|
||||
float y = clippingPolygon.get(i + 1);
|
||||
float x2 = clippingPolygon.get((i + 2) % clippingPolygon.size);
|
||||
float y2 = clippingPolygon.get((i + 3) % clippingPolygon.size);
|
||||
|
||||
float mx = x + (x2 - x) / 2;
|
||||
float my = y + (y2 - y) / 2;
|
||||
float nx = (y2 - y);
|
||||
float ny = -(x2 - x);
|
||||
if (!clockwise) {
|
||||
nx = -nx;
|
||||
ny = -ny;
|
||||
}
|
||||
float l = 1 / (float)Math.sqrt(nx * nx + ny * ny);
|
||||
nx *= l * 20;
|
||||
ny *= l * 20;
|
||||
|
||||
shapes.line(mx, my, mx + nx, my + ny);
|
||||
}
|
||||
}
|
||||
// // edge normals
|
||||
// shapes.setColor(Color.YELLOW);
|
||||
// if (clippingPolygon.size > 2) {
|
||||
// boolean clockwise = Clipper.isClockwise(clippingPolygon);
|
||||
// for (int i = 0; i < clippingPolygon.size; i += 2) {
|
||||
// float x = clippingPolygon.get(i);
|
||||
// float y = clippingPolygon.get(i + 1);
|
||||
// float x2 = clippingPolygon.get((i + 2) % clippingPolygon.size);
|
||||
// float y2 = clippingPolygon.get((i + 3) % clippingPolygon.size);
|
||||
//
|
||||
// float mx = x + (x2 - x) / 2;
|
||||
// float my = y + (y2 - y) / 2;
|
||||
// float nx = (y2 - y);
|
||||
// float ny = -(x2 - x);
|
||||
// if (!clockwise) {
|
||||
// nx = -nx;
|
||||
// ny = -ny;
|
||||
// }
|
||||
// float l = 1 / (float)Math.sqrt(nx * nx + ny * ny);
|
||||
// nx *= l * 20;
|
||||
// ny *= l * 20;
|
||||
//
|
||||
// shapes.line(mx, my, mx + nx, my + ny);
|
||||
// }
|
||||
// }
|
||||
|
||||
if (isCreatingClippingArea) {
|
||||
clippingPolygon.setSize(clippingPolygon.size - 2);
|
||||
}
|
||||
|
||||
// clipped polygon
|
||||
shapes.setColor(Color.PINK);
|
||||
if (clippedPolygon.size > 0) {
|
||||
shapes.polygon(clippedPolygon.items, 0, clippedPolygon.size);
|
||||
}
|
||||
// // clipped polygon
|
||||
// shapes.setColor(Color.PINK);
|
||||
// if (clippedPolygon.size > 0) {
|
||||
// shapes.polygon(clippedPolygon.items, 0, clippedPolygon.size);
|
||||
// }
|
||||
|
||||
shapes.end();
|
||||
}
|
||||
@ -181,18 +189,18 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
float x3 = triangle[10];
|
||||
float y3 = triangle[11];
|
||||
|
||||
// must duplicate first vertex at end of polygon
|
||||
// so we can avoid module/branch in clipping code
|
||||
Clipper.makeClockwise(clippingPolygon);
|
||||
clippingPolygon.add(clippingPolygon.get(0));
|
||||
clippingPolygon.add(clippingPolygon.get(1));
|
||||
|
||||
boolean clipped = clipper.clip(x1, y1, x2, y2, x3, y3, clippingPolygon, clippedPolygon);
|
||||
System.out.println("Clipped: " + clipped);
|
||||
if (clipped) {
|
||||
Array<FloatArray> clippingPolygons = decomposer.decompose(clippingPolygon);
|
||||
clippedPolygonVertices.clear();
|
||||
clippedPolygonIndices.clear();
|
||||
|
||||
for (FloatArray poly : clippingPolygons) {
|
||||
Clipper.makeClockwise(poly);
|
||||
poly.add(poly.get(0));
|
||||
poly.add(poly.get(1));
|
||||
|
||||
boolean clipped = clipper.clip(x1, y1, x2, y2, x3, y3, poly, clippedPolygon);
|
||||
System.out.println("Clipped: " + clipped);
|
||||
if (clipped) {
|
||||
float d0 = y2 - y3;
|
||||
float d1 = x3 - x2;
|
||||
float d2 = x1 - x3;
|
||||
@ -202,6 +210,7 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
float denom = 1 / (d0 * d2 + d1 * d3);
|
||||
|
||||
// triangulate by creating a triangle fan, duplicate vertices
|
||||
int o = clippedPolygonVertices.size / 5;
|
||||
float color = Color.WHITE.toFloatBits();
|
||||
for (int i = 0; i < clippedPolygon.size; i += 2) {
|
||||
float x = clippedPolygon.get(i);
|
||||
@ -221,15 +230,16 @@ public class SoftwareClippingTest extends ApplicationAdapter {
|
||||
}
|
||||
|
||||
for (int i = 1; i < (clippedPolygon.size >> 1) - 1; i++) {
|
||||
clippedPolygonIndices.add(0);
|
||||
clippedPolygonIndices.add(i);
|
||||
clippedPolygonIndices.add(i + 1);
|
||||
clippedPolygonIndices.add(o);
|
||||
clippedPolygonIndices.add(o + i);
|
||||
clippedPolygonIndices.add(o + i + 1);
|
||||
}
|
||||
} else {
|
||||
clippedPolygon.clear();
|
||||
}
|
||||
|
||||
clippingPolygon.setSize(clippingPolygon.size - 2);
|
||||
poly.setSize(poly.size - 2);
|
||||
}
|
||||
}
|
||||
|
||||
public static void main (String[] args) {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user