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fix: don't include Renderer as it requires other dependencies to be i…
…nstalled manually
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82 changes: 82 additions & 0 deletions
82
src/main/java/ru/octol1ttle/flightassistant/util/ScreenSpaceRendering.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package ru.octol1ttle.flightassistant.util; | ||
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| import net.minecraft.client.MinecraftClient; | ||
| import net.minecraft.client.render.Camera; | ||
| import net.minecraft.util.math.Vec3d; | ||
| import org.jetbrains.annotations.ApiStatus; | ||
| import org.jetbrains.annotations.Contract; | ||
| import org.jetbrains.annotations.NotNull; | ||
| import org.joml.Matrix4f; | ||
| import org.joml.Vector3f; | ||
| import org.joml.Vector4f; | ||
| import org.lwjgl.opengl.GL11; | ||
|
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| /** | ||
| * @author 0x150 | ||
| * @see <a href="https://github.com/0x3C50/Renderer">Original source code</a> | ||
| */ | ||
| public class ScreenSpaceRendering { | ||
| private static final MinecraftClient client = MinecraftClient.getInstance(); | ||
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| @ApiStatus.Internal | ||
| public static final Matrix4f lastProjMat = new Matrix4f(); | ||
| @ApiStatus.Internal | ||
| public static final Matrix4f lastModMat = new Matrix4f(); | ||
| @ApiStatus.Internal | ||
| public static final Matrix4f lastWorldSpaceMatrix = new Matrix4f(); | ||
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| /** | ||
| * | ||
| * Transforms an input position into a (x, y, d) coordinate, transformed to screen space. d specifies the far plane of the position, and can be used to check if the position is on screen. Use {@link #isVisible(Vec3d)}. | ||
| * Example: | ||
| * <pre> | ||
| * {@code | ||
| * // Hud render event | ||
| * Vec3d targetPos = new Vec3d(100, 64, 100); // world space | ||
| * Vec3d screenSpace = ScreenSpaceRendering.fromWorldSpace(targetPos); | ||
| * if (ScreenSpaceRendering.isVisible(screenSpace)) { | ||
| * // do something with screenSpace.x and .y | ||
| * } | ||
| * } | ||
| * </pre> | ||
| * | ||
| * @param pos The world space coordinates to translate | ||
| * @return The (x, y, d) coordinates | ||
| * @throws NullPointerException If {@code pos} is null | ||
| */ | ||
| @Contract(value = "_ -> new", pure = true) | ||
| public static Vec3d fromWorldSpace(@NotNull Vec3d pos) { | ||
| Camera camera = client.getEntityRenderDispatcher().camera; | ||
| int displayHeight = client.getWindow().getHeight(); | ||
| int[] viewport = new int[4]; | ||
| GL11.glGetIntegerv(GL11.GL_VIEWPORT, viewport); | ||
| Vector3f target = new Vector3f(); | ||
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| double deltaX = pos.x - camera.getPos().x; | ||
| double deltaY = pos.y - camera.getPos().y; | ||
| double deltaZ = pos.z - camera.getPos().z; | ||
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| Vector4f transformedCoordinates = new Vector4f((float) deltaX, (float) deltaY, (float) deltaZ, 1.f).mul( | ||
| lastWorldSpaceMatrix); | ||
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| Matrix4f matrixProj = new Matrix4f(lastProjMat); | ||
| Matrix4f matrixModel = new Matrix4f(lastModMat); | ||
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| matrixProj.mul(matrixModel) | ||
| .project(transformedCoordinates.x(), transformedCoordinates.y(), transformedCoordinates.z(), viewport, | ||
| target); | ||
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| return new Vec3d(target.x / client.getWindow().getScaleFactor(), | ||
| (displayHeight - target.y) / client.getWindow().getScaleFactor(), target.z); | ||
| } | ||
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| /** | ||
| * Checks if a screen space coordinate (x, y, d) is on screen | ||
| * | ||
| * @param pos The (x, y, d) coordinates to check | ||
| * @return True if the coordinates are visible | ||
| */ | ||
| public static boolean isVisible(Vec3d pos) { | ||
| return pos != null && pos.z > -1 && pos.z < 1; | ||
| } | ||
| } |