full card structure in place, card binder working.

net/neoforged/neoforge/client/event/RenderHandEvent.java

@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) Forge Development LLC and contributors
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+package net.neoforged.neoforge.client.event;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+import net.minecraft.client.renderer.LightTexture;
+import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.world.InteractionHand;
+import net.minecraft.world.item.ItemStack;
+import net.neoforged.bus.api.Event;
+import net.neoforged.bus.api.ICancellableEvent;
+import net.neoforged.fml.LogicalSide;
+import net.neoforged.neoforge.common.NeoForge;
+import org.jetbrains.annotations.ApiStatus;
+
+/**
+ * Fired before a hand is rendered in the first person view.
+ *
+ * <p>This event is {@linkplain ICancellableEvent cancellable}, and does not {@linkplain HasResult have a result}.
+ * If this event is cancelled, then the hand will not be rendered.</p>
+ *
+ * <p>This event is fired on the {@linkplain NeoForge#EVENT_BUS main Forge event bus},
+ * only on the {@linkplain LogicalSide#CLIENT logical client}.</p>
+ *
+ * @see RenderArmEvent
+ */
+public class RenderHandEvent extends Event implements ICancellableEvent {
+    private final InteractionHand hand;
+    private final PoseStack poseStack;
+    private final MultiBufferSource multiBufferSource;
+    private final int packedLight;
+    private final float partialTick;
+    private final float interpolatedPitch;
+    private final float swingProgress;
+    private final float equipProgress;
+    private final ItemStack stack;
+
+    @ApiStatus.Internal
+    public RenderHandEvent(InteractionHand hand, PoseStack poseStack, MultiBufferSource multiBufferSource, int packedLight,
+            float partialTick, float interpolatedPitch,
+            float swingProgress, float equipProgress, ItemStack stack) {
+        this.hand = hand;
+        this.poseStack = poseStack;
+        this.multiBufferSource = multiBufferSource;
+        this.packedLight = packedLight;
+        this.partialTick = partialTick;
+        this.interpolatedPitch = interpolatedPitch;
+        this.swingProgress = swingProgress;
+        this.equipProgress = equipProgress;
+        this.stack = stack;
+    }
+
+    /**
+     * {@return the hand being rendered}
+     */
+    public InteractionHand getHand() {
+        return hand;
+    }
+
+    /**
+     * {@return the pose stack used for rendering}
+     */
+    public PoseStack getPoseStack() {
+        return poseStack;
+    }
+
+    /**
+     * {@return the source of rendering buffers}
+     */
+    public MultiBufferSource getMultiBufferSource() {
+        return multiBufferSource;
+    }
+
+    /**
+     * {@return the amount of packed (sky and block) light for rendering}
+     *
+     * @see LightTexture
+     */
+    public int getPackedLight() {
+        return packedLight;
+    }
+
+    /**
+     * {@return the partial tick}
+     */
+    public float getPartialTick() {
+        return partialTick;
+    }
+
+    /**
+     * {@return the interpolated pitch of the player entity}
+     */
+    public float getInterpolatedPitch() {
+        return interpolatedPitch;
+    }
+
+    /**
+     * {@return the swing progress of the hand being rendered}
+     */
+    public float getSwingProgress() {
+        return swingProgress;
+    }
+
+    /**
+     * {@return the progress of the equip animation, from {@code 0.0} to {@code 1.0}}
+     */
+    public float getEquipProgress() {
+        return equipProgress;
+    }
+
+    /**
+     * {@return the item stack to be rendered}
+     */
+    public ItemStack getItemStack() {
+        return stack;
+    }
+}