Class ItemOpacityRenderer

java.lang.Object

net.ixdarklord.coolcatcanvas.api.client.gui.ItemOpacityRenderer

public final class ItemOpacityRenderer
extends Object

Items drawn in a GUI at an opacity, fixed or animated: a HUD card fading in with its icon, a slot greying out.

ItemOpacityRenderer.render(graphics, stack, x, y, 0.5F);                      // half see-through
ItemOpacityRenderer.renderWithDecorations(graphics, font, stack, x, y, 0.5F); // with its count and bar

var fade = ItemOpacityRenderer.OpacityTween.in(10).start(); // keep it, and draw each frame:
ItemOpacityRenderer.render(graphics, stack, x, y, fade);

ItemOpacityRenderer.withOpacity(0.5F, () -> graphics.item(stack, x, y));      // anything that draws items

The game draws GUI items from an atlas at full opacity, with no way to ask for less: each item drawn here remembers the opacity it was asked for, and is blitted from the atlas with it, so solid and flat items fade alike. Inside withOpacity(float, Runnable) the text and filled rectangles drawn (an item's count, its durability bar) fade too.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ItemOpacityRenderer.OpacityTween	An opacity eased from one value to another over a time, for an item fading in or out.

Method Summary

Modifier and Type	Method	Description
static void	popItemOpacity()
static void	pushItemOpacity(float opacity)	Fades the items drawn from now until popItemOpacity(), and only the items: for a caller that fades the rest of what it draws itself (a whole HUD faded between two hooks, say).
static void	render(net.minecraft.client.gui.GuiGraphicsExtractor graphics, net.minecraft.world.item.ItemStack stack, int x, int y, float opacity)	Draws an item as GuiGraphicsExtractor.fakeItem(ItemStack, int, int) does, at an opacity from 0 to 1.
static void	render(net.minecraft.client.gui.GuiGraphicsExtractor graphics, net.minecraft.world.item.ItemStack stack, int x, int y, ItemOpacityRenderer.OpacityTween fade)	Draws an item at the opacity a fade is at now.
static void	renderWithDecorations(net.minecraft.client.gui.GuiGraphicsExtractor graphics, net.minecraft.client.gui.Font font, net.minecraft.world.item.ItemStack stack, int x, int y, float opacity)	Draws an item with its count and durability bar, as a slot shows it, at an opacity from 0 to 1.
static void	renderWithDecorations(net.minecraft.client.gui.GuiGraphicsExtractor graphics, net.minecraft.client.gui.Font font, net.minecraft.world.item.ItemStack stack, int x, int y, ItemOpacityRenderer.OpacityTween fade)	Draws an item with its count and durability bar at the opacity a fade is at now.
static void	withOpacity(float opacity, Runnable draw)	Runs drawing at an opacity from 0 to 1: the items, text and filled rectangles it draws are that much see-through (on top of any opacity already in force).

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

render

public static void render(net.minecraft.client.gui.GuiGraphicsExtractor graphics,
 net.minecraft.world.item.ItemStack stack,
 int x,
 int y,
 float opacity)

Draws an item as GuiGraphicsExtractor.fakeItem(ItemStack, int, int) does, at an opacity from 0 to 1.

render

public static void render(net.minecraft.client.gui.GuiGraphicsExtractor graphics,
 net.minecraft.world.item.ItemStack stack,
 int x,
 int y,
 ItemOpacityRenderer.OpacityTween fade)

Draws an item at the opacity a fade is at now.

renderWithDecorations

public static void renderWithDecorations(net.minecraft.client.gui.GuiGraphicsExtractor graphics,
 net.minecraft.client.gui.Font font,
 net.minecraft.world.item.ItemStack stack,
 int x,
 int y,
 float opacity)

Draws an item with its count and durability bar, as a slot shows it, at an opacity from 0 to 1.

renderWithDecorations

public static void renderWithDecorations(net.minecraft.client.gui.GuiGraphicsExtractor graphics,
 net.minecraft.client.gui.Font font,
 net.minecraft.world.item.ItemStack stack,
 int x,
 int y,
 ItemOpacityRenderer.OpacityTween fade)

Draws an item with its count and durability bar at the opacity a fade is at now.

withOpacity

public static void withOpacity(float opacity,
 Runnable draw)

Runs drawing at an opacity from 0 to 1: the items, text and filled rectangles it draws are that much see-through (on top of any opacity already in force). Nothing is drawn at 0.

pushItemOpacity

public static void pushItemOpacity(float opacity)

Fades the items drawn from now until popItemOpacity(), and only the items: for a caller that fades the rest of what it draws itself (a whole HUD faded between two hooks, say). Calls nest; each push needs its pop.

popItemOpacity

public static void popItemOpacity()