From da88b0f2ac0b09082222ce1a387987e8cdd5f21d Mon Sep 17 00:00:00 2001
From: Sven Gothel <sgothel@jausoft.com>
Date: Sun, 19 Feb 2023 05:12:04 +0100
Subject: Graph Font.Metrics: Use unchanges sign of (+) ascent, (-) descent and
 (+) lineGap, document them properly and fix Font.getLineHeightFU()

---
 .../test/junit/graph/TestTextRendererNEWT00.java   | 285 +++++++++++++++++++++
 .../test/junit/jogl/demos/es2/av/MovieCube.java    |   6 +-
 2 files changed, 288 insertions(+), 3 deletions(-)
 create mode 100644 src/test/com/jogamp/opengl/test/junit/graph/TestTextRendererNEWT00.java

(limited to 'src/test/com')

diff --git a/src/test/com/jogamp/opengl/test/junit/graph/TestTextRendererNEWT00.java b/src/test/com/jogamp/opengl/test/junit/graph/TestTextRendererNEWT00.java
new file mode 100644
index 000000000..07798e2ee
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/graph/TestTextRendererNEWT00.java
@@ -0,0 +1,285 @@
+/**
+ * Copyright 2011-2023 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.opengl.test.junit.graph;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Locale;
+
+import com.jogamp.opengl.GL;
+import com.jogamp.opengl.GL2ES2;
+import com.jogamp.opengl.GLCapabilities;
+import com.jogamp.opengl.GLDrawable;
+import com.jogamp.opengl.GLException;
+import com.jogamp.opengl.GLProfile;
+import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
+
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+
+import com.jogamp.common.util.IOUtil;
+import com.jogamp.graph.curve.Region;
+import com.jogamp.graph.curve.opengl.RenderState;
+import com.jogamp.graph.curve.opengl.GLRegion;
+import com.jogamp.graph.curve.opengl.RegionRenderer;
+import com.jogamp.graph.curve.opengl.TextRegionUtil;
+import com.jogamp.graph.font.Font;
+import com.jogamp.graph.font.FontFactory;
+import com.jogamp.graph.font.FontScale;
+import com.jogamp.graph.geom.SVertex;
+import com.jogamp.opengl.math.geom.AABBox;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.NEWTGLContext;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.GLReadBufferUtil;
+import com.jogamp.opengl.util.PMVMatrix;
+
+
+/**
+ * TestTextRendererNEWT00 Variant
+ * - No listener, all straight forward
+ * - Type Rendering via TextRegionUtil
+ * - Type Rendering vanilla via GLRegion, GLRegion.addOutlineShape(Font.processString()), ..
+ */
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestTextRendererNEWT00 extends UITestCase {
+    static final boolean DEBUG = false;
+    static final boolean TRACE = false;
+    static long duration = 100; // ms
+    static boolean forceES2 = false;
+    static boolean forceGL3 = false;
+    static boolean mainRun = false;
+    static boolean useMSAA = true;
+    static int win_width = 1024;
+    static int win_height = 640;
+
+    static Font font;
+    static float fontSize = 24; // in pixel
+
+    @BeforeClass
+    public static void setup() throws IOException {
+        if( null == font ) {
+            font = FontFactory.get(FontFactory.UBUNTU).getDefault();
+        }
+    }
+
+    static int atoi(final String a) {
+        try {
+            return Integer.parseInt(a);
+        } catch (final Exception ex) { throw new RuntimeException(ex); }
+    }
+
+    public static void main(final String args[]) throws IOException {
+        mainRun = true;
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                duration = atoi(args[i]);
+            } else if(args[i].equals("-width")) {
+                i++;
+                win_width = atoi(args[i]);
+            } else if(args[i].equals("-height")) {
+                i++;
+                win_height = atoi(args[i]);
+            } else if(args[i].equals("-noMSAA")) {
+                useMSAA = false;
+            } else if(args[i].equals("-es2")) {
+                forceES2 = true;
+            } else if(args[i].equals("-gl3")) {
+                forceGL3 = true;
+            } else if(args[i].equals("-font")) {
+                i++;
+                font = FontFactory.get(IOUtil.getResource(args[i], TestTextRendererNEWT00.class.getClassLoader(), TestTextRendererNEWT00.class).getInputStream(), true);
+            } else if(args[i].equals("-fontSize")) {
+                i++;
+                fontSize = MiscUtils.atof(args[i], fontSize);
+            }
+        }
+        final String tstname = TestTextRendererNEWT00.class.getName();
+        org.junit.runner.JUnitCore.main(tstname);
+    }
+
+    static void sleep() {
+        try {
+            System.err.println("** new frame ** (sleep: "+duration+"ms)");
+            Thread.sleep(duration);
+        } catch (final InterruptedException ie) {}
+    }
+
+    @Test
+    public void test02TextRendererVBAA04() throws InterruptedException, GLException, IOException {
+        final int renderModes = Region.VBAA_RENDERING_BIT;
+        final int sampleCount = 4;
+        final GLProfile glp;
+        if(forceGL3) {
+            glp = GLProfile.get(GLProfile.GL3);
+        } else if(forceES2) {
+            glp = GLProfile.get(GLProfile.GLES2);
+        } else {
+            glp = GLProfile.getGL2ES2();
+        }
+
+        final GLCapabilities caps = new GLCapabilities( glp );
+        caps.setAlphaBits(4);
+        System.err.println("Requested: "+caps);
+        System.err.println("Requested: "+Region.getRenderModeString(renderModes));
+
+        final NEWTGLContext.WindowContext winctx = NEWTGLContext.createWindow(caps, win_width, win_height, true);
+        final GLDrawable drawable = winctx.context.getGLDrawable();
+        final GL2ES2 gl = winctx.context.getGL().getGL2ES2();
+
+        Assert.assertEquals(GL.GL_NO_ERROR, gl.glGetError());
+
+        System.err.println("Chosen: "+winctx.window.getChosenCapabilities());
+
+        final RenderState rs = RenderState.createRenderState(SVertex.factory());
+        final RegionRenderer renderer = RegionRenderer.create(rs, RegionRenderer.defaultBlendEnable, RegionRenderer.defaultBlendDisable);
+        rs.setHintMask(RenderState.BITHINT_GLOBAL_DEPTH_TEST_ENABLED);
+        final TextRegionUtil textRenderUtil = new TextRegionUtil(renderModes);
+
+        // init
+        gl.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
+        renderer.init(gl, 0);
+        rs.setColorStatic(0.1f, 0.1f, 0.1f, 1.0f);
+        screenshot = new GLReadBufferUtil(false, false);
+
+        // reshape
+        gl.glViewport(0, 0, drawable.getSurfaceWidth(), drawable.getSurfaceHeight());
+
+        // renderer.reshapePerspective(gl, 45.0f, drawable.getWidth(), drawable.getHeight(), 0.1f, 1000.0f);
+        renderer.reshapeOrtho(drawable.getSurfaceWidth(), drawable.getSurfaceHeight(), 0.1f, 1000.0f);
+
+        final int[] sampleCountIO = { sampleCount };
+        // display
+        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+        {
+            {
+                final float[] pixelsPerMM = winctx.window.getPixelsPerMM(new float[2]);
+                final float[] dpi = FontScale.ppmmToPPI(pixelsPerMM, new float[2]);
+                final float mmSize = fontSize / pixelsPerMM[1];
+                final int unitsPerEM = font.getMetrics().getUnitsPerEM();
+                String txt = String.format("Resolution dpiV %.2f, %.2f px/mm", dpi[1], pixelsPerMM[1]);
+                renderString(drawable, gl, renderer, textRenderUtil, txt, 0,  0, -1000, sampleCountIO);
+                txt = String.format("Font %s, unitsPerEM %d, size %.2f px %2f mm", font.getFullFamilyName(), unitsPerEM, fontSize, mmSize);
+                renderString(drawable, gl, renderer, textRenderUtil, txt, 0,  -1, -1000, sampleCountIO);
+            }
+            {
+                final AABBox txt_box_em = glyph.getBBox();
+                final float full_width_s = full_width_o / txt_box_em.getWidth();
+                final float full_height_s = full_height_o / txt_box_em.getHeight();
+                final float txt_scale = full_width_s < full_height_s ? full_width_s/2f : full_height_s/2f;
+                pmv.glPushMatrix();
+                pmv.glScalef(txt_scale, txt_scale, 1f);
+                pmv.glTranslatef(-txt_box_em.getWidth(), 0f, 0f);
+                {
+                    final GLRegion region = GLRegion.create(renderModes, null);
+                    region.addOutlineShape(glyph.getShape(), null, region.hasColorChannel() ? fg_color : null);
+                    region.draw(gl, renderer, sampleCount);
+                    region.destroy(gl);
+                }
+                if( once ) {
+                    final AABBox txt_box_em2 = font.getGlyphShapeBounds(null, text);
+                    System.err.println("XXX: full_width: "+full_width_o+" / "+txt_box_em.getWidth()+" -> "+full_width_s);
+                    System.err.println("XXX: full_height: "+full_height_o+" / "+txt_box_em.getHeight()+" -> "+full_height_s);
+                    System.err.println("XXX: txt_scale: "+txt_scale);
+                    System.err.println("XXX: txt_box_em "+txt_box_em);
+                    System.err.println("XXX: txt_box_e2 "+txt_box_em2);
+                    once = false;
+                }
+            }
+            renderString(drawable, gl, renderer, textRenderUtil, "012345678901234567890123456789", 0, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 0, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "Hello World", 0, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "4567890123456", 4, -1, -1000,sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "I like JogAmp", 4, -1, -1000, sampleCountIO);
+
+            int c = 0;
+            renderString(drawable, gl, renderer, textRenderUtil, "GlueGen", c++, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "JOAL", c++, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "JOGL", c++, -1, -1000, sampleCountIO);
+            renderString(drawable, gl, renderer, textRenderUtil, "JOCL", c++, -1, -1000, sampleCountIO);
+        }
+        gl.glFinish();
+        printScreen(renderModes, drawable, gl, false, sampleCount);
+        drawable.swapBuffers();
+
+        sleep();
+
+        // dispose
+        screenshot.dispose(gl);
+        renderer.destroy(gl);
+
+        NEWTGLContext.destroyWindow(winctx);
+    }
+    private boolean once = true;
+
+    private GLReadBufferUtil screenshot;
+    int lastRow = -1;
+
+    void renderString(final GLDrawable drawable, final GL2ES2 gl, final RegionRenderer renderer, final TextRegionUtil textRenderUtil, final String text, final int column, int row, final int z0, final int[] sampleCount) {
+        final int height = drawable.getSurfaceHeight();
+
+        float dx = 0;
+        float dy = height;
+        if(0>row) {
+            row = lastRow + 1;
+        }
+        final AABBox textBox = font.getMetricBounds(text); // em-size
+        dx += fontSize * font.getAdvanceWidth('X') * column;
+        dy -= fontSize * textBox.getHeight() * ( row + 1 );
+
+        final PMVMatrix pmv = renderer.getMatrix();
+        pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+        pmv.glLoadIdentity();
+        pmv.glTranslatef(dx, dy, z0);
+        pmv.glScalef(fontSize, fontSize, 1.0f);
+        textRenderUtil.drawString3D(gl, renderer, font, text, null, sampleCount);
+
+        lastRow = row;
+    }
+
+    private int screenshot_num = 0;
+
+    public void printScreen(final int renderModes, final GLDrawable drawable, final GL gl, final boolean exportAlpha, final int sampleCount) throws GLException, IOException {
+        final String dir = "./";
+        final String objName = getSimpleTestName(".")+"-snap"+screenshot_num;
+        screenshot_num++;
+        final String modeS = Region.getRenderModeString(renderModes);
+        final String bname = String.format((Locale)null, "%s-msaa%02d-fontsz%02.1f-%03dx%03d-%s%04d", objName,
+                drawable.getChosenGLCapabilities().getNumSamples(),
+                fontSize, drawable.getSurfaceWidth(), drawable.getSurfaceHeight(), modeS, sampleCount);
+        final String filename = dir + bname +".png";
+        if(screenshot.readPixels(gl, false)) {
+            screenshot.write(new File(filename));
+        }
+    }
+
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/av/MovieCube.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/av/MovieCube.java
index f4b0540fa..21cc6b7ef 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/av/MovieCube.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/es2/av/MovieCube.java
@@ -203,9 +203,9 @@ public class MovieCube implements GLEventListener {
             pixelScale = 1.0f / ( pixelSize1 * 20f );
             // underlineSize: 'underline' amount of pixel below 0/0 (Note: lineGap is negative)
             final Font.Metrics metrics = font.getMetrics();
-            final float lineGap = pixelSize1 * metrics.getScale( metrics.getLineGapFU() );
-            final float descent = pixelSize1 * metrics.getScale( metrics.getDescentFU() );
-            underlineSize = descent - lineGap;
+            final float lineGap = pixelSize1 * metrics.getLineGap();
+            final float descent = pixelSize1 * metrics.getDescent();
+            underlineSize = lineGap - descent;
             System.err.println("XXX: dpiH "+dpiH+", fontSize "+fontSize1+", pixelSize "+pixelSize1+", pixelScale "+pixelScale+", fLG "+lineGap+", fDesc "+descent+", underlineSize "+underlineSize);
         }
 
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