142 lines
3.8 KiB
Java
142 lines
3.8 KiB
Java
/*
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*
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* MIT License
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*
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* Copyright (c) 2020 TerraForged
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package com.terraforged.app.mesh;
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public class Mesh {
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private final Mesh inner;
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private final float x0;
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private final float y0;
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private final float x1;
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private final float y1;
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private final float quality;
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public Mesh(Mesh inner, float x0, float y0, float x1, float y1, float quality) {
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this.inner = inner;
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this.x0 = x0;
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this.y0 = y0;
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this.x1 = x1;
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this.y1 = y1;
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this.quality = quality;
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}
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public Mesh expand(float scale) {
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return expand(scale, scale);
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}
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public Mesh expand(float scale, float quality) {
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float width0 = getWidth();
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float height0 = getHeight();
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float width1 = width0 * scale;
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float height1 = height0 * scale;
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float deltaX = (width1 - width0) / 2F;
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float deltaY = (height1 - height0) / 2F;
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float newQuality = this.quality * quality;
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return new Mesh(this, x0 - deltaX, y0 - deltaY, x1 + deltaX, y1 + deltaY, newQuality);
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}
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public float getWidth() {
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return x1 - x0;
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}
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public float getHeight() {
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return y1 - y0;
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}
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public void start(float width, float height) {
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if (inner != null) {
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inner.start(width, height);
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}
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}
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public void render() {
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if (inner == null) {
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renderNormal();
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} else {
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renderCutout();
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inner.render();
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}
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}
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public void beginStrip() {
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if (inner != null) {
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inner.beginStrip();
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}
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}
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public void endStrip() {
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if (inner != null) {
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inner.endStrip();
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}
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}
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public void visit(float x, float y) {
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if (inner != null) {
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inner.visit(x, y);
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}
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}
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private void renderNormal() {
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beginStrip();
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iterate(x0, y0, x1, y1);
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endStrip();
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}
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private void renderCutout() {
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beginStrip();
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iterate(x0, y0, inner.x1, inner.y0);
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endStrip();
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beginStrip();
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iterate(inner.x1, y0, x1, inner.y1);
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endStrip();
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beginStrip();
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iterate(inner.x0, inner.y1, x1, y1);
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endStrip();
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beginStrip();
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iterate(x0, inner.y0, inner.x0, y1);
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endStrip();
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}
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private void iterate(float minX, float minY, float maxX, float maxY) {
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float x = minX - quality;
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float y = minY - quality;
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while (y < maxY) {
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y = Math.min(y + quality, maxY);
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beginStrip();
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while (x < maxX) {
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x = Math.min(x + quality, maxX);
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visit(x, y);
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visit(x, y + quality);
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}
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x = minX - quality;
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endStrip();
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}
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}
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}
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