Java tutorial
/** * This class was created by <Vazkii>. It's distributed as * part of the Botania Mod. Get the Source Code in github: * https://github.com/Vazkii/Botania * * Botania is Open Source and distributed under a * Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License * (http://creativecommons.org/licenses/by-nc-sa/3.0/deed.en_GB) * * File Created @ [Jan 19, 2014, 5:40:38 PM (GMT)] */ //https://github.com/Vazkii/Botania/blob/master/MODSRC/vazkii/botania/client/core/helper/RenderHelper.java //Credit to Vazkii for these utils as they are better than the vanilla methods. package dracocore.handbook.helpers; import java.util.List; import net.minecraft.client.Minecraft; import net.minecraft.client.gui.FontRenderer; import net.minecraft.client.renderer.Tessellator; import org.lwjgl.opengl.GL11; public final class RenderHelper { public static void drawGradientRect(int par1, int par2, float z, int par3, int par4, int par5, int par6) { final float var7 = ((par5 >> 24) & 255) / 255F; final float var8 = ((par5 >> 16) & 255) / 255F; final float var9 = ((par5 >> 8) & 255) / 255F; final float var10 = (par5 & 255) / 255F; final float var11 = ((par6 >> 24) & 255) / 255F; final float var12 = ((par6 >> 16) & 255) / 255F; final float var13 = ((par6 >> 8) & 255) / 255F; final float var14 = (par6 & 255) / 255F; GL11.glDisable(GL11.GL_TEXTURE_2D); GL11.glEnable(GL11.GL_BLEND); GL11.glDisable(GL11.GL_ALPHA_TEST); GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA); GL11.glShadeModel(GL11.GL_SMOOTH); final Tessellator var15 = Tessellator.instance; var15.startDrawingQuads(); var15.setColorRGBA_F(var8, var9, var10, var7); var15.addVertex(par3, par2, z); var15.addVertex(par1, par2, z); var15.setColorRGBA_F(var12, var13, var14, var11); var15.addVertex(par1, par4, z); var15.addVertex(par3, par4, z); var15.draw(); GL11.glShadeModel(GL11.GL_FLAT); GL11.glDisable(GL11.GL_BLEND); GL11.glEnable(GL11.GL_ALPHA_TEST); GL11.glEnable(GL11.GL_TEXTURE_2D); } public static void drawTexturedModalRect(int par1, int par2, float z, int par3, int par4, int par5, int par6) { drawTexturedModalRect(par1, par2, z, par3, par4, par5, par6, 0.00390625F, 0.00390625F); } public static void drawTexturedModalRect(int par1, int par2, float z, int par3, int par4, int par5, int par6, float f, float f1) { Tessellator tessellator = Tessellator.instance; tessellator.startDrawingQuads(); tessellator.addVertexWithUV(par1 + 0, par2 + par6, z, (par3 + 0) * f, (par4 + par6) * f1); tessellator.addVertexWithUV(par1 + par5, par2 + par6, z, (par3 + par5) * f, (par4 + par6) * f1); tessellator.addVertexWithUV(par1 + par5, par2 + 0, z, (par3 + par5) * f, (par4 + 0) * f1); tessellator.addVertexWithUV(par1 + 0, par2 + 0, z, (par3 + 0) * f, (par4 + 0) * f1); tessellator.draw(); } public static void renderTooltip(int x, int y, List<String> tooltipData) { final int color = 0x505000ff; final int color2 = 0xf0100010; renderTooltip(x, y, tooltipData, color, color2); } public static void renderTooltip(int x, int y, List<String> tooltipData, int color, int color2) { final boolean lighting = GL11.glGetBoolean(GL11.GL_LIGHTING); if (lighting) net.minecraft.client.renderer.RenderHelper.disableStandardItemLighting(); if (!tooltipData.isEmpty()) { int var5 = 0; int var6; int var7; final FontRenderer fontRenderer = Minecraft.getMinecraft().fontRenderer; for (var6 = 0; var6 < tooltipData.size(); ++var6) { var7 = fontRenderer.getStringWidth(tooltipData.get(var6)); if (var7 > var5) var5 = var7; } var6 = x + 12; var7 = y - 12; int var9 = 8; if (tooltipData.size() > 1) var9 += 2 + ((tooltipData.size() - 1) * 10); final float z = 300F; drawGradientRect(var6 - 3, var7 - 4, z, var6 + var5 + 3, var7 - 3, color2, color2); drawGradientRect(var6 - 3, var7 + var9 + 3, z, var6 + var5 + 3, var7 + var9 + 4, color2, color2); drawGradientRect(var6 - 3, var7 - 3, z, var6 + var5 + 3, var7 + var9 + 3, color2, color2); drawGradientRect(var6 - 4, var7 - 3, z, var6 - 3, var7 + var9 + 3, color2, color2); drawGradientRect(var6 + var5 + 3, var7 - 3, z, var6 + var5 + 4, var7 + var9 + 3, color2, color2); final int var12 = ((color & 0xFFFFFF) >> 1) | (color & -16777216); drawGradientRect(var6 - 3, (var7 - 3) + 1, z, (var6 - 3) + 1, (var7 + var9 + 3) - 1, color, var12); drawGradientRect(var6 + var5 + 2, (var7 - 3) + 1, z, var6 + var5 + 3, (var7 + var9 + 3) - 1, color, var12); drawGradientRect(var6 - 3, var7 - 3, z, var6 + var5 + 3, (var7 - 3) + 1, color, color); drawGradientRect(var6 - 3, var7 + var9 + 2, z, var6 + var5 + 3, var7 + var9 + 3, var12, var12); GL11.glDisable(GL11.GL_DEPTH_TEST); for (int var13 = 0; var13 < tooltipData.size(); ++var13) { final String var14 = tooltipData.get(var13); fontRenderer.drawStringWithShadow(var14, var6, var7, -1); if (var13 == 0) var7 += 2; var7 += 10; } GL11.glEnable(GL11.GL_DEPTH_TEST); } if (!lighting) net.minecraft.client.renderer.RenderHelper.disableStandardItemLighting(); GL11.glColor4f(1F, 1F, 1F, 1F); } }