Example usage for org.lwjgl.opengl GL11 glBegin

Introduction

In this page you can find the example usage for org.lwjgl.opengl GL11 glBegin.

Prototype

public static native void glBegin(@NativeType("GLenum") int mode);

Source Link

Document

Begins the definition of vertex attributes of a sequence of primitives to be transferred to the GL.

Usage

From source file:a1.Render2D.java

License:Open Source License

static public void FillEllipse(Coord c, Coord r, int a1, int a2) {
    GLColor();// www.  j a va  2  s. com
    GL11.glBegin(GL11.GL_TRIANGLE_FAN);
    Vertex(c);
    for (int i = a1; i <= a2; i += 5) {
        double a = (i * Math.PI * 2) / 360.0;
        Vertex(c.add((int) (Math.cos(a) * r.x), -(int) (Math.sin(a) * r.y)));
    }
    GL11.glEnd();
    CheckError();
}

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From source file:adrianton.gloptat.plotter.Box.java

License:Open Source License

static void assemble() {
    handle = GL11.glGenLists(1);//from  w ww .java  2  s  .c o  m
    GL11.glNewList(handle, GL11.GL_COMPILE);

    GL11.glLineWidth(3);
    GL11.glColor3f(1f, 1f, 1f);

    GL11.glBegin(GL11.GL_LINES);

    GL11.glVertex3d(-1, -1, 1);
    GL11.glVertex3d(1, -1, 1);
    GL11.glVertex3d(1, -1, 1);
    GL11.glVertex3d(1, 1, 1);
    GL11.glVertex3d(1, 1, 1);
    GL11.glVertex3d(-1, 1, 1);
    GL11.glVertex3d(-1, 1, 1);
    GL11.glVertex3d(-1, -1, 1);

    GL11.glVertex3d(-1, -1, -1);
    GL11.glVertex3d(1, -1, -1);
    GL11.glVertex3d(1, -1, -1);
    GL11.glVertex3d(1, 1, -1);
    GL11.glVertex3d(1, 1, -1);
    GL11.glVertex3d(-1, 1, -1);
    GL11.glVertex3d(-1, 1, -1);
    GL11.glVertex3d(-1, -1, -1);

    GL11.glVertex3d(-1, -1, -1);
    GL11.glVertex3d(-1, -1, 1);
    GL11.glVertex3d(1, -1, -1);
    GL11.glVertex3d(1, -1, 1);
    GL11.glVertex3d(1, 1, -1);
    GL11.glVertex3d(1, 1, 1);
    GL11.glVertex3d(-1, 1, -1);
    GL11.glVertex3d(-1, 1, 1);

    GL11.glEnd();

    GL11.glEndList();
}

---

From source file:adrianton.gloptat.plotter.Pointer.java

License:Open Source License

static void assemble() {
    final float tmpm = 1;
    final float tmpm2 = 1 / 3;
    final float tmpm3 = 7;

    handle = GL11.glGenLists(1);//from   ww w. java 2  s.  c o m
    GL11.glNewList(handle, GL11.GL_COMPILE);

    GL11.glBegin(GL11.GL_TRIANGLES);
    GL11.glColor3f(1, 1, 1);

    GL11.glVertex3f(0, 0, tmpm2);
    GL11.glVertex3f(-tmpm, -tmpm, tmpm3);
    GL11.glVertex3f(-tmpm, tmpm, tmpm3);

    GL11.glVertex3f(0, 0, tmpm2);
    GL11.glVertex3f(-tmpm, tmpm, tmpm3);
    GL11.glVertex3f(tmpm, tmpm, tmpm3);

    GL11.glVertex3f(0, 0, tmpm2);
    GL11.glVertex3f(tmpm, tmpm, tmpm3);
    GL11.glVertex3f(tmpm, -tmpm, tmpm3);

    GL11.glVertex3f(0, 0, tmpm2);
    GL11.glVertex3f(tmpm, -tmpm, tmpm3);
    GL11.glVertex3f(-tmpm, -tmpm, tmpm3);
    GL11.glEnd();

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glVertex3f(tmpm, tmpm, tmpm3);
    GL11.glVertex3f(tmpm, -tmpm, tmpm3);
    GL11.glVertex3f(-tmpm, -tmpm, tmpm3);
    GL11.glVertex3f(-tmpm, tmpm, tmpm3);
    GL11.glEnd();

    GL11.glEndList();
}

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From source file:adrianton.gloptat.plotter.Surface.java

License:Open Source License

public static void assemble(Displayer outer) {
    int i, j;//from  ww w. j  a v a 2 s  .com
    float px, py;
    float z1, z2, z3, z4;
    float tmp;

    Color col;

    float spx = -outer.rezx / 2;
    float spy = -outer.rezy / 2;

    handle = GL11.glGenLists(1);
    GL11.glNewList(handle, GL11.GL_COMPILE);

    GL11.glBegin(GL11.GL_QUADS);

    px = spx;
    for (i = 0; i < outer.rezx - 1; i++) {
        py = spy;
        for (j = 0; j < outer.rezy - 1; j++) {
            z1 = (float) outer.val[i][j];
            z2 = (float) outer.val[i + 1][j];
            z3 = (float) outer.val[i][j + 1];
            z4 = (float) outer.val[i + 1][j + 1];

            tmp = (float) (1 - ((outer.val[i][j] - outer.minc) / (outer.maxc - outer.minc)));
            tmp = tmp * 66 / 100 + 34 / 100;
            col = new Color(Color.HSBtoRGB(tmp, 0.7f, 0.85f));
            GL11.glColor3f((float) (col.getRed() / 255f), (float) (col.getGreen() / 255f),
                    (float) (col.getBlue() / 255f));

            GL11.glVertex3f(px, py, z1);

            tmp = (float) (1 - ((outer.val[i][j + 1] - outer.minc) / (outer.maxc - outer.minc)));
            tmp = tmp * 66 / 100 + 34 / 100;
            col = new Color(Color.HSBtoRGB(tmp, 0.7f, 0.85f));
            GL11.glColor3f((float) (col.getRed() / 255f), (float) (col.getGreen() / 255f),
                    (float) (col.getBlue() / 255f));

            GL11.glVertex3f(px, py + 1, z3);

            tmp = (float) (1 - ((outer.val[i + 1][j + 1] - outer.minc) / (outer.maxc - outer.minc)));
            tmp = tmp * 66 / 100 + 34 / 100;
            col = new Color(Color.HSBtoRGB(tmp, 0.7f, 0.85f));
            GL11.glColor3f((float) (col.getRed() / 255f), (float) (col.getGreen() / 255f),
                    (float) (col.getBlue() / 255f));

            GL11.glVertex3f(px + 1, py + 1, z4);

            tmp = (float) (1 - ((outer.val[i + 1][j] - outer.minc) / (outer.maxc - outer.minc)));
            tmp = tmp * 66 / 100 + 34 / 100;
            col = new Color(Color.HSBtoRGB(tmp, 0.7f, 0.85f));
            GL11.glColor3f((float) (col.getRed() / 255f), (float) (col.getGreen() / 255f),
                    (float) (col.getBlue() / 255f));

            GL11.glVertex3f(px + 1, py, z2);

            py += 1;
        }
        px += 1;
    }

    GL11.glEnd();
    GL11.glEndList();
}

---

From source file:ai.UnitAI.java

License:Open Source License

public void draw() {
    icon.bind();//from   ww  w .  j a  v a  2  s.  c  o  m
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(0, 0);
    GL11.glVertex2i(0, 0);
    GL11.glTexCoord2f(0, 1);
    GL11.glVertex2i(0, 64);
    GL11.glTexCoord2f(1, 1);
    GL11.glVertex2i(64, 64);
    GL11.glTexCoord2f(1, 0);
    GL11.glVertex2i(64, 0);
    GL11.glEnd();
}

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From source file:allout58.mods.techtree.util.RenderingHelper.java

License:Open Source License

public static void draw2DLine(int x1, int y1, int x2, int y2, float width, int colorRGB) {
    float red = (float) (colorRGB >> 16 & 255) / 255.0F;
    float blue = (float) (colorRGB >> 8 & 255) / 255.0F;
    float green = (float) (colorRGB & 255) / 255.0F;

    GL11.glDisable(GL11.GL_TEXTURE_2D);/*from   w  w  w .  ja v a 2s  .c o  m*/
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glEnable(GL11.GL_LINE_SMOOTH);
    GL11.glLineWidth(width);

    GL11.glPushMatrix();
    GL11.glColor3f(red, green, blue);
    GL11.glBegin(GL11.GL_LINE_STRIP);
    GL11.glVertex3d(x1, y1, 0.0D);
    GL11.glVertex3d(x2, y2, 0.0D);
    GL11.glEnd();
    GL11.glPopMatrix();

    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glDisable(GL11.GL_BLEND);
    GL11.glDisable(GL11.GL_LINE_SMOOTH);
}

---

From source file:allout58.mods.techtree.util.RenderingHelper.java

License:Open Source License

public static void drawRoundedRectangle(int x, int y, int width, int height, int radius, int color,
        int borderColor) throws IllegalArgumentException {
    if (radius * 2 > Math.abs(width))
        throw new IllegalArgumentException("Error! Width not large enough for radius!");
    if (radius * 2 > Math.abs(height))
        throw new IllegalArgumentException("Error! Height not large enough for radius!");

    if (width < 0) {
        x += width;/*from  w  w w .j  av a2s . c  om*/
        width = Math.abs(width);
    }
    if (height < 0) {
        y += height;
        height = Math.abs(height);
    }

    int x1Inner = x + radius;
    int y1Inner = y + radius;
    int x2Inner = x + width - radius;
    int y2Inner = y + height - radius;

    float red = (float) (borderColor >> 16 & 255) / 255.0F;
    float green = (float) (borderColor >> 8 & 255) / 255.0F;
    float blue = (float) (borderColor & 255) / 255.0F;
    float alpha = (float) (borderColor >> 24 & 255) / 255.0F;

    Gui.drawRect(x, y1Inner, x1Inner, y2Inner, borderColor);
    Gui.drawRect(x1Inner, y, x2Inner, y1Inner, borderColor);
    Gui.drawRect(x2Inner, y1Inner, x + width, y2Inner, borderColor);
    Gui.drawRect(x1Inner, y2Inner, x2Inner, y + height, borderColor);
    Gui.drawRect(x1Inner, y1Inner, x2Inner, y2Inner, color);

    ArrayList<Point> curves = new ArrayList<Point>();

    final double[][] start = new double[][] { { x1Inner, y1Inner }, { x2Inner, y1Inner }, { x2Inner, y2Inner },
            { x1Inner, y2Inner } };

    for (int corner = 0; corner < 4; corner++) {
        curves.clear();
        for (int i = 0; i < VERTEX_PER_CURVE + 1; i++) {
            double theta = deltaTheta * i + dT[corner];
            Point p = new Point(Math.cos(theta), Math.sin(theta));
            curves.add(p);
        }

        GL11.glDisable(GL11.GL_TEXTURE_2D);
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glPushMatrix();
        GL11.glColor4f(red, green, blue, alpha);
        GL11.glBegin(GL11.GL_TRIANGLE_FAN);
        GL11.glVertex3d(start[corner][0], start[corner][1], 0);
        for (int i = curves.size() - 1; i >= 0; i--) {
            GL11.glVertex3d((curves.get(i).getX()) * radius + start[corner][0],
                    (curves.get(i).getY()) * radius + start[corner][1], 0);
        }
        GL11.glEnd();
        GL11.glPopMatrix();
        GL11.glDisable(GL11.GL_BLEND);
        GL11.glEnable(GL11.GL_TEXTURE_2D);
    }
}

---

From source file:analog.clock.AnalogClock.java

private void drawCircle(double r, int n) {
    GL11.glColor3f(1.0f, 1.0f, 0.0f);//from  w  w  w . j av a2  s .c  om
    double theta = 2 * Math.PI / n;
    GL11.glPushMatrix();
    GL11.glBegin(GL11.GL_LINES);
    for (int i = 0; i < n;) {
        //GL11.glVertex3f(0, 0, 0);
        float x = (float) (r * Math.cos(theta * i));
        float y = (float) (r * Math.sin(theta * i));
        GL11.glVertex3f(x, y, 0);
        i++;
        x = (float) (r * Math.cos(theta * i));
        y = (float) (r * Math.sin(theta * i));
        GL11.glVertex3f(x, y, 0);
    }
    GL11.glEnd();
    GL11.glPopMatrix();
}

---

From source file:aphelion.client.graphics.world.Projectile.java

License:Open Source License

@Override
public boolean render(@Nonnull Camera camera, int iteration) {
    if (!isExists()) {
        return false;
    }//  ww w.j  a va  2  s  .c  om

    if (iteration > 1) {
        return false;
    }

    updateAnimObjects();

    Point screenPos = new Point();
    camera.mapToScreenPosition(pos, screenPos);

    if (camera.radarRendering) {
        if (iteration == 0 && this.animRadar != null) {
            org.newdawn.slick.Color color = this.animRadar.get();
            TextureImpl.bindNone();
            GL11.glColor4f(color.r, color.g, color.b, color.a * this.alpha);
            float x = screenPos.x - 0.5f;
            float y = screenPos.y - 0.5f;
            GL11.glBegin(SGL.GL_QUADS);
            GL11.glVertex2f(x, y);
            GL11.glVertex2f(x + 1, y);
            GL11.glVertex2f(x + 1, y + 1);
            GL11.glVertex2f(x, y + 1);
            GL11.glEnd();
        }

        return false;
    }

    if (iteration == 0) {
        // render the trail
        SpriteSheetCounted trail = this.imageTrail.getSpriteSheet();
        if (trail != null) {
            Point trailPos = new Point();
            PhysicsPositionVector phyPos = new PhysicsPositionVector();

            long rand = imageTrailRandomized.get() ? SwissArmyKnife.fastRandomIsh() : 0;

            long tick = this.renderingAt_tick - (rand & 0b11); // 0, 1, 2, 3
            rand >>= 2;

            for (int tile = 0; tile < trail.getTilesCount(); tile += (rand & 0b1) + 1, rand >>= 1) {
                physicsProjectile.getHistoricPosition(phyPos, tick - 2 * tile, true);

                if (phyPos.pos.set) {
                    trailPos.set(phyPos.pos);
                    trailPos.divide(1024);
                    camera.mapToScreenPosition(trailPos, trailPos);

                    Image img = trail.getSubImage(tile);
                    img.draw(trailPos.x - img.getWidth() / 2, trailPos.y - img.getHeight() / 2,
                            this.alphaFilter);
                }

            }
        }
    } else if (iteration == 1) {
        Animation anim;

        if (imageInactive.isSet() && !this.physicsProjectile.isActive()) {
            anim = animInactive;
        } else if (imageBounces.isSet() && this.physicsProjectile.getBouncesLeft() != 0) {
            anim = animBounces;
        } else {
            anim = animNoBounce; // also fallback
        }

        if (anim != null) {
            anim.draw(screenPos.x - anim.getWidth() / 2 * camera.zoom,
                    screenPos.y - anim.getHeight() / 2 * camera.zoom, anim.getWidth() * camera.zoom,
                    anim.getHeight() * camera.zoom, this.alphaFilter);
        }

        if (Client.showDebug) {
            camera.renderPlayerText(this.renderDelay_current + "", screenPos.x + 5, screenPos.y + 5,
                    Color.WHITE);
        }
    }

    return iteration < 1;
}

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From source file:br.org.archimedes.gui.opengl.OpenGLWrapper.java

License:Open Source License

/**
 * Draws the collection of points based on the current geometric primitive and fill it.
 * /* w ww  .j  av a 2 s. com*/
 * @param points
 *            Points in the model coordinate system
 * @throws NullArgumentException
 *             Thrown if points is null
 */
public void drawFromModel(List<Point> points) throws NullArgumentException {

    if (points == null) {
        throw new NullArgumentException();
    }
    GL11.glBegin(primitiveType);
    for (Point point : points) {
        try {
            Point convertedPoint = br.org.archimedes.Utils.getWorkspace().modelToScreen(point);
            GL11.glVertex2d(convertedPoint.getX(), convertedPoint.getY());
        } catch (NullArgumentException e) {
            // Should never reach this block.
            e.printStackTrace();
        }
    }
    GL11.glEnd();
}

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