217 lines
10 KiB
Java
217 lines
10 KiB
Java
package com.simibubi.create.utility;
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import org.lwjgl.opengl.GL11;
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import com.mojang.blaze3d.platform.GlStateManager;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.renderer.ActiveRenderInfo;
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import net.minecraft.client.renderer.BufferBuilder;
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import net.minecraft.client.renderer.Tessellator;
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import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
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import net.minecraft.util.math.BlockPos;
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import net.minecraft.util.math.Vec3d;
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public class TessellatorHelper {
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public static final float fontScale = 1/512f;
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public static void prepareForDrawing() {
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Minecraft mc = Minecraft.getInstance();
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GlStateManager.pushMatrix();
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GlStateManager.pushLightingAttributes();
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GlStateManager.enableBlend();
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GlStateManager.enableAlphaTest();
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GlStateManager.color4f(1, 1, 1, 1);
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ActiveRenderInfo renderInfo = mc.gameRenderer.getActiveRenderInfo();
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Vec3d view = renderInfo.getProjectedView();
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GlStateManager.translated(-view.x, -view.y, -view.z);
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}
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public static void begin() {
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Tessellator.getInstance().getBuffer().begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX);
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}
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public static void draw() {
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Tessellator.getInstance().draw();
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}
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public static void cleanUpAfterDrawing() {
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GlStateManager.disableAlphaTest();
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GlStateManager.disableBlend();
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GlStateManager.popAttributes();
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GlStateManager.popMatrix();
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}
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public static void drawString(String str, float x, float y, float z, boolean scalesUp, boolean hasDepth) {
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Minecraft mc = Minecraft.getInstance();
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float pitch = mc.getRenderManager().playerViewX;
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float yaw = mc.getRenderManager().playerViewY;
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boolean isThirdPersonFrontal = mc.gameSettings.thirdPersonView == 2;
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GlStateManager.pushMatrix();
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GlStateManager.pushLightingAttributes();
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GlStateManager.translatef(x, y, z);
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GlStateManager.normal3f(0.0F, 1.0F, 0.0F);
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GlStateManager.rotatef(-yaw, 0.0F, 1.0F, 0.0F);
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GlStateManager.rotatef((float) (isThirdPersonFrontal ? -1 : 1) * pitch, 1.0F, 0.0F, 0.0F);
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GlStateManager.scalef(-0.025F, -0.025F, 0.025F);
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GlStateManager.disableLighting();
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if (!hasDepth) {
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GlStateManager.depthMask(false);
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GlStateManager.disableDepthTest();
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}
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GlStateManager.enableBlend();
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GlStateManager.blendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA,
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GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ONE,
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GlStateManager.DestFactor.ZERO);
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int i = mc.fontRenderer.getStringWidth(str) / 2;
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GlStateManager.disableTexture();
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Tessellator tessellator = Tessellator.getInstance();
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BufferBuilder bufferbuilder = tessellator.getBuffer();
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bufferbuilder.begin(7, DefaultVertexFormats.POSITION_COLOR);
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bufferbuilder.pos((double) (-i - 3), (double) (-3), 0.0D).color(1F, 1F, 1F, .5F).endVertex();
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bufferbuilder.pos((double) (-i - 3), (double) (10), 0.0D).color(1F, 1F, 1F, .5F).endVertex();
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bufferbuilder.pos((double) (i + 3), (double) (10), 0.0D).color(1F, 1F, 1F, .5F).endVertex();
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bufferbuilder.pos((double) (i + 3), (double) (-3), 0.0D).color(1F, 1F, 1F, .5F).endVertex();
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if (scalesUp) {
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double distance = mc.player.getEyePosition(mc.getRenderPartialTicks()).squareDistanceTo(x, y, z);
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double scale = distance * fontScale;
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GlStateManager.scaled(2 + scale, 2 + scale, 2 + scale);
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}
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tessellator.draw();
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GlStateManager.enableTexture();
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if (hasDepth) {
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GlStateManager.translatef(0, 0, -0.125f);
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}
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mc.fontRenderer.drawString(str, -mc.fontRenderer.getStringWidth(str) / 2, 0, 0);
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GlStateManager.enableDepthTest();
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GlStateManager.color4f(1.0F, 1.0F, 1.0F, 1.0F);
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GlStateManager.depthMask(true);
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GlStateManager.blendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA,
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GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.SRC_ALPHA,
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GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
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GlStateManager.popMatrix();
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GlStateManager.popAttributes();
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}
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public static void cube(BufferBuilder bufferBuilder, BlockPos pos, BlockPos size, double scale,
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boolean scaleVertical, boolean doubleFaces) {
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TessellatorHelper.walls(bufferBuilder, pos, size, scale, scaleVertical, doubleFaces);
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int w = size.getX();
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int h = size.getY();
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int l = size.getZ();
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if (doubleFaces) {
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TessellatorHelper.doubleFace(bufferBuilder, pos, new BlockPos(w, 0, l), scale, true, scaleVertical, false);
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TessellatorHelper.doubleFace(bufferBuilder, pos.east(w).up(h), new BlockPos(-w, 0, l), scale, true, scaleVertical, false);
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} else {
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TessellatorHelper.face(bufferBuilder, pos, new BlockPos(w, 0, l), scale, true, scaleVertical, false, false);
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TessellatorHelper.face(bufferBuilder, pos.east(w).up(h), new BlockPos(-w, 0, l), scale, true, scaleVertical, false, false);
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}
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}
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public static void walls(BufferBuilder bufferBuilder, BlockPos pos, BlockPos size, double scale,
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boolean scaleVertical, boolean doubleFaces) {
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int w = size.getX();
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int h = size.getY();
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int l = size.getZ();
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if (doubleFaces) {
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TessellatorHelper.doubleFace(bufferBuilder, pos, new BlockPos(w, h, 0), scale, true, scaleVertical, false);
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TessellatorHelper.doubleFace(bufferBuilder, pos.east(w).south(l), new BlockPos(0, h, -l), scale, true, scaleVertical, false);
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TessellatorHelper.doubleFace(bufferBuilder, pos.east(w).south(l), new BlockPos(-w, h, 0), scale, true, scaleVertical, false);
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TessellatorHelper.doubleFace(bufferBuilder, pos, new BlockPos(0, h, l), scale, true, scaleVertical, false);
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} else {
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TessellatorHelper.face(bufferBuilder, pos, new BlockPos(w, h, 0), scale, true, scaleVertical, false, false);
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TessellatorHelper.face(bufferBuilder, pos.east(w).south(l), new BlockPos(0, h, -l), scale, true, scaleVertical, false, false);
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TessellatorHelper.face(bufferBuilder, pos.east(w).south(l), new BlockPos(-w, h, 0), scale, true, scaleVertical, false, false);
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TessellatorHelper.face(bufferBuilder, pos, new BlockPos(0, h, l), scale, true, scaleVertical, false, false);
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}
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}
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public static void doubleFace(BufferBuilder bufferBuilder, BlockPos pos, BlockPos size, double shift,
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boolean stretch, boolean shiftVertical, boolean mirrorTexture) {
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TessellatorHelper.face(bufferBuilder, pos, size, shift, stretch, shiftVertical, false, mirrorTexture);
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TessellatorHelper.face(bufferBuilder, pos.add(size.getX(), 0, (size.getY() == 0) ? 0 : size.getZ()),
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new BlockPos(-size.getX(), size.getY(), (size.getY() == 0) ? size.getZ() : -size.getZ()), -shift,
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stretch, shiftVertical, true, mirrorTexture);
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}
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public static void face(BufferBuilder bufferBuilder, BlockPos pos, BlockPos size, double shift, boolean stretch,
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boolean shiftVertical, boolean shiftBackwards, boolean mirrorTexture) {
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int w = size.getX();
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int h = size.getY();
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int l = size.getZ();
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if (shiftBackwards)
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shift = -shift;
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if (w == 0) { // YZ plane -> H has to be positive
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double xs = (l < 0) ? shift : -shift;
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if (shiftBackwards)
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xs = -xs;
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double ys1 = shiftVertical ? shift : 0;
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double zs1 = l < 0 ? -shift : shift;
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if (!stretch && (l > 0 ^ mirrorTexture))
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zs1 = -zs1;
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double ys2 = stretch ? -ys1 : ys1;
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double zs2 = stretch ? -zs1 : zs1;
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double u1 = (mirrorTexture) ? l : 0;
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double u2 = (mirrorTexture) ? 0 : l;
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs, ys2, zs1), pos.south(l), u2, h);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs, ys1, zs1), pos.south(l).up(h), u2, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs, ys1, zs2), pos.up(h), u1, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs, ys2, zs2), pos, u1, h);
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} else if (h == 0) { // XZ plane -> L has to be positive
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double ys = w < 0 ? shift : -shift;
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if (shiftBackwards)
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ys = -ys;
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double xs1 = w < 0 ? -shift : shift;
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double zs1 = shift;
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double xs2 = stretch ? -xs1 : xs1;
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double zs2 = stretch ? -zs1 : zs1;
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double u1 = (mirrorTexture) ? w : 0;
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double u2 = (mirrorTexture) ? 0 : w;
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs2, ys, zs1), pos.south(l), u1, l);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs2, ys, zs2), pos, u1, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs1, ys, zs2), pos.east(w), u2, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs1, ys, zs1), pos.east(w).south(l), u2, l);
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} else if (l == 0) { // XY plane -> H has to be positive
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double zs = w < 0 ? shift : -shift;
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if (shiftBackwards)
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zs = -zs;
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double ys1 = shiftVertical ? shift : 0;
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double xs1 = w < 0 ? -shift : shift;
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if (!stretch && (w > 0 ^ mirrorTexture))
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xs1 = -xs1;
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double ys2 = stretch ? -ys1 : ys1;
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double xs2 = stretch ? -xs1 : xs1;
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double u1 = (mirrorTexture) ? w : 0;
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double u2 = (mirrorTexture) ? 0 : w;
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs2, ys2, zs), pos, u1, h);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs2, ys1, zs), pos.up(h), u1, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs1, ys1, zs), pos.east(w).up(h), u2, 0);
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TessellatorHelper.posTexShift(bufferBuilder, new Vec3d(xs1, ys2, zs), pos.east(w), u2, h);
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}
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}
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private static void posTexShift(BufferBuilder bufferBuilder, Vec3d shift, BlockPos pos, double u, double v) {
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bufferBuilder.pos(shift.x + pos.getX(), shift.y + pos.getY(), shift.z + pos.getZ()).tex(u, v).endVertex();
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}
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}
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