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:fr.theshark34.sharkengine.ui.components.Button.java

License:Apache License

/**
 * Draw the button//from   www .jav  a2s  .  co m
 */
@Override
public void draw() {
    // Enabling blending
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    // Being sure that texturing is disabled
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    // Check if the mouse is on the button
    if (Mouse.getX() > this.x && Mouse.getX() < this.x + this.width
            && Mouse.getY() < Display.getHeight() - this.y
            && Mouse.getY() > Display.getHeight() - this.y - this.height) {

        // Changing button color to colorHover
        GL11.glColor4f((float) colorHover.getRed() / 255, (float) colorHover.getGreen() / 255,
                (float) colorHover.getBlue() / 255, (float) colorHover.getAlpha() / 255);

        // If the mouse clicked and clicked is false, executing action
        // and setting clicked to true, then the action will not be
        // repeated
        if (Mouse.isButtonDown(0)) {
            if (!clicked) {
                clicked = true;
                action.buttonClicked();
            }
        } else
            // If mouse isn't on it, setting clicked to false
            clicked = false;
    } else
        // Else, setting the color to the base color
        GL11.glColor4f((float) color.getRed() / 255, (float) color.getGreen() / 255,
                (float) color.getBlue() / 255, (float) color.getAlpha() / 255);

    // Drawing the button base (a rectangle)
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y);
        GL11.glVertex2f(x + width, y);
        GL11.glVertex2f(x + width, y + height);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    // Drawing the text
    this.font.drawString(x + (this.width - this.font.getWidth(text)) / 2,
            y + (this.height - this.font.getHeight(text)) / 2, text);

    // Disabling blending
    GL11.glDisable(GL11.GL_BLEND);
}

---

From source file:fr.theshark34.sharkengine.ui.components.Checkbox.java

License:Apache License

/**
 * Draw the checkbox// w  w w  . j  ava2  s . co m
 */
public void draw() {
    // Enabling blending
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    // Being sure that texturing is disabled
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    // Picking white color
    GL11.glColor3f(1.0F, 1.0F, 1.0F);

    // Drawing the checkbox
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y);
        GL11.glVertex2f(x + width, y);
        GL11.glVertex2f(x + width, y + height);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    // Drawing the text
    this.font.drawString(x + 25, y + (this.height - this.font.getHeight(text)) / 2, text);

    // Being sure that texturing is enabled
    GL11.glEnable(GL11.GL_TEXTURE_2D);

    // If the mouse is on the checkbox
    if (Mouse.getX() > this.x && Mouse.getX() < this.x + this.width
            && Mouse.getY() < Display.getHeight() - this.y
            && Mouse.getY() > Display.getHeight() - this.y - this.height)
        // If the mouse clicked and clicked is false, setting coched
        // to its oposite and setting clicked to true, so it will do
        // it one time
        if (Mouse.isButtonDown(0)) {
            if (!clicked) {
                clicked = true;
                coched = !coched;
            }
        } else
            // If mouse isn't on it, setting clicked to false
            clicked = false;

    // Checking if the checkbox is coched
    if (coched) {
        // Drawing coched checkbox texture
        GL11.glBindTexture(GL11.GL_TEXTURE_2D, cochedcb.getTextureID());

        // Drawing the image
        GL11.glBegin(GL11.GL_QUADS);
        {
            GL11.glTexCoord2f(0.0f, 0.0f);
            GL11.glVertex2f(x, y);
            GL11.glTexCoord2f(1.0f, 0.0f);
            GL11.glVertex2f(x + width, y);
            GL11.glTexCoord2f(1.0f, 1.0f);
            GL11.glVertex2f(x + width, y + height);
            GL11.glTexCoord2f(0.0f, 1.0f);
            GL11.glVertex2f(x, y + height);
        }
        GL11.glEnd();
    }

    // Disabling texture
    GL11.glDisable(GL11.GL_TEXTURE_2D);
    // Disabling blending
    GL11.glDisable(GL11.GL_BLEND);
}

---

From source file:fr.theshark34.sharkengine.ui.components.HorizontalSlider.java

License:Apache License

/**
 * Draw the slider/*from   w ww. j ava  2  s .com*/
 */
@Override
public void draw() {
    // Enabling blending
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    // Being sure that texturing is disabled
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    // Check if the mouse is on the slider
    if (Mouse.getX() > this.x + this.sliderX && Mouse.getX() < this.x + this.sliderX + this.sliderWidth
            && Mouse.getY() < Display.getHeight() - this.y
            && Mouse.getY() > Display.getHeight() - this.y - this.height) {
        // If the mouse clicked and clicked is false, settings clicked to
        // true and saving mouse initial click
        if (Mouse.isButtonDown(0)) {
            if (!clicked) {
                clicked = true;
                mouseClick = Mouse.getX();
            }
        } else
            // If mouse isn't on it, setting clicked to false
            clicked = false;
    }
    // Setting clicked to false only when the mouse stop clicking
    else if (!Mouse.isButtonDown(0))
        clicked = false;

    // If mouse clicked
    if (clicked) {
        // If slider isn't on the minimum / maximum
        if (sliderX >= 0 && sliderX + sliderWidth <= width)
            if (sliderX + Mouse.getX() - mouseClick >= 0)
                if (sliderX + sliderWidth + Mouse.getX() - mouseClick <= width) {
                    sliderX += Mouse.getX() - mouseClick;
                    mouseClick = Mouse.getX();
                } else
                    sliderX = width - sliderWidth;
            else
                sliderX = 0;
    }

    // Picking the background color
    GL11.glColor4f((float) color.getRed() / 255, (float) color.getGreen() / 255, (float) color.getBlue() / 255,
            (float) color.getAlpha() / 255);

    // Drawing the slider background
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y);
        GL11.glVertex2f(x + width, y);
        GL11.glVertex2f(x + width, y + height);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    // Picking the slider color
    GL11.glColor4f((float) sliderColor.getRed() / 255, (float) sliderColor.getGreen() / 255,
            (float) sliderColor.getBlue() / 255, (float) sliderColor.getAlpha() / 255);

    // Drawing the slider
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x + sliderX, y);
        GL11.glVertex2f(x + sliderX + sliderWidth, y);
        GL11.glVertex2f(x + sliderX + sliderWidth, y + height);
        GL11.glVertex2f(x + sliderX, y + height);
    }
    GL11.glEnd();
}

---

From source file:fr.theshark34.sharkengine.ui.components.Image.java

License:Apache License

/**
 * Draw it/*w  w  w.ja v  a2  s  .c o m*/
 */
@Override
public void draw() {
    // Without this, image can render strangely
    GL11.glColor3f(1.0F, 1.0F, 1.0F);

    // Enabling blend and texture
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture.getTextureID());

    // Drawing the image
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glTexCoord2f(0.0f, 0.0f);
        GL11.glVertex2f(x, y);
        GL11.glTexCoord2f(1.0f, 0.0f);
        GL11.glVertex2f(x + width, y);
        GL11.glTexCoord2f(1.0f, 1.0f);
        GL11.glVertex2f(x + width, y + height);
        GL11.glTexCoord2f(0.0f, 1.0f);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    // Disabling blend and texture
    GL11.glDisable(GL11.GL_BLEND);
    GL11.glDisable(GL11.GL_TEXTURE_2D);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
}

---

From source file:fr.theshark34.sharkengine.ui.components.ProgressBar.java

License:Apache License

/**
 * Draw the bar/*from w  w  w  . j a va2 s .c o m*/
 */
@Override
public void draw() {
    // Enabling blending
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    // Being sure that texture is disabled
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    // Picking the base color
    GL11.glColor4f((float) color.getRed() / 255, (float) color.getGreen() / 255, (float) color.getBlue() / 255,
            (float) color.getAlpha() / 255);

    // Drawing the base
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y);
        GL11.glVertex2f(x + width, y);
        GL11.glVertex2f(x + width, y + height);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    if (value != 0 && maximum != 0) {
        // Picking the foreground color
        GL11.glColor4f((float) fgColor.getRed() / 255, (float) fgColor.getGreen() / 255,
                (float) fgColor.getBlue() / 255, (float) fgColor.getAlpha() / 255);

        int fgWidth = (int) (width / ((float) maximum / (float) value));

        // Drawing the foreground
        GL11.glBegin(GL11.GL_QUADS);
        {
            GL11.glVertex2f(x, y);
            GL11.glVertex2f(x + fgWidth, y);
            GL11.glVertex2f(x + fgWidth, y + height);
            GL11.glVertex2f(x, y + height);
        }
        GL11.glEnd();
    }

    // Drawing the text
    this.font.drawString(x + (this.width - this.font.getWidth(string)) / 2,
            y + (this.height - this.font.getHeight(string)) / 2, string);

    // Disabling blending
    GL11.glDisable(GL11.GL_BLEND);
}

---

From source file:fr.theshark34.sharkengine.ui.components.VerticalSlider.java

License:Apache License

/**
 * Draw the slider// w w w. j a va  2s .  com
 */
@Override
public void draw() {
    // Enabling blending
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    // Being sure that texturing is disabled
    GL11.glDisable(GL11.GL_TEXTURE_2D);

    // Check if the mouse is on the slider
    if (Mouse.getX() > this.x && Mouse.getX() < this.x + width
            && Mouse.getY() < Display.getHeight() - this.y + this.sliderY
            && Mouse.getY() > Display.getHeight() - this.y - this.sliderY - this.sliderHeight) {
        // If the mouse clicked and clicked is false, settings clicked to
        // true and saving mouse initial click
        if (Mouse.isButtonDown(0)) {
            if (!clicked) {
                clicked = true;
                mouseClick = Display.getHeight() - Mouse.getY();
            }
        } else
            // If mouse isn't on it, setting clicked to false
            clicked = false;
    }
    // Setting clicked to false only when the mouse stop clicking
    else if (!Mouse.isButtonDown(0))
        clicked = false;

    // If mouse clicked
    if (clicked) {

        // If slider isn't on the minimum / maximum
        if (sliderY >= 0 && sliderY + sliderHeight <= height)
            if (sliderY + Display.getHeight() - Mouse.getY() - mouseClick >= 0)
                if (sliderY + sliderHeight + Display.getHeight() - Mouse.getY() - mouseClick <= height) {
                    sliderY += Display.getHeight() - Mouse.getY() - mouseClick;
                    mouseClick = Display.getHeight() - Mouse.getY();
                } else
                    sliderY = height - sliderHeight;
            else
                sliderY = 0;
    }
    // Picking the background color
    GL11.glColor4f((float) color.getRed() / 255, (float) color.getGreen() / 255, (float) color.getBlue() / 255,
            (float) color.getAlpha() / 255);

    // Drawing the slider background
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y);
        GL11.glVertex2f(x + width, y);
        GL11.glVertex2f(x + width, y + height);
        GL11.glVertex2f(x, y + height);
    }
    GL11.glEnd();

    // Picking the slider color
    GL11.glColor4f((float) sliderColor.getRed() / 255, (float) sliderColor.getGreen() / 255,
            (float) sliderColor.getBlue() / 255, (float) sliderColor.getAlpha() / 255);

    // Drawing the slider
    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glVertex2f(x, y + sliderY);
        GL11.glVertex2f(x + width, y + sliderY);
        GL11.glVertex2f(x + width, y + sliderY + sliderHeight);
        GL11.glVertex2f(x, y + sliderY + sliderHeight);
    }
    GL11.glEnd();
}

---

From source file:fractal.PolygonFractal.java

public void next(int depth, double angle) {
    GL11.glRotatef((float) angle, 0, 0, 1);

    float sector = 2f * (float) Math.PI / (float) num_verts;

    /*GL11.glColor3f((float)Math.sin(color_basis) / 2f + 0.5f, 
               (float)Math.sin(color_basis + Math.PI / 1.5) / 2f + 0.5f,
               (float)Math.sin(color_basis + Math.PI / 0.75) / 2f + 0.5f);*/
    GL11.glBegin(GL11.GL_LINE_STRIP);
    for (int i = 0; i <= num_verts; i++) {
        float a = sector * i;
        GL11.glVertex2f((float) Math.cos(a), (float) Math.sin(a));
    }/* w  ww  . j  a  v  a  2s .  c om*/
    GL11.glEnd();

    if (depth > 0) {
        for (int i = 0; i < num_verts; i++) {
            GL11.glRotatef(sector * 180f / (float) Math.PI, 0, 0, 1);
            GL11.glPushMatrix();
            GL11.glTranslatef(1, 0, 0);
            GL11.glScalef(mult, mult, mult);

            next(depth - 1, angle * ang_mult);
            GL11.glPopMatrix();
        }
    }
}

---

From source file:game.core.blockmap.BlockMapBehavior.java

License:Open Source License

@Override
public void draw(GameObject target) {
    if (textureProvider == null) {
        return;//from  w ww. j  a  v a2  s. co  m
    }
    int w = Math.min(width, 100);
    int h = Math.min(height, 30);
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glColor3ub((byte) 255, (byte) 255, (byte) 255);
    for (int x = 0; x < w; x++) {
        for (int y = 0; y < h; y++) {
            Texture texture = textureProvider.getBlockTexture(getBlock(x, y));
            if (texture == null) {
                continue;
            }
            texture.glBindTexture();
            GL11.glBegin(GL11.GL_QUADS);
            GL11.glTexCoord2f(0.0f, 1.0f);
            GL11.glVertex2i(x, y);
            GL11.glTexCoord2f(1.0f, 1.0f);
            GL11.glVertex2i(x + 1, y);
            GL11.glTexCoord2f(1.0f, 0.0f);
            GL11.glVertex2i(x + 1, y + 1);
            GL11.glTexCoord2f(0.0f, 0.0f);
            GL11.glVertex2i(x, y + 1);
            GL11.glEnd();
        }
    }
}

---

From source file:game.core.gfx.DrawRectangleBehavior.java

License:Open Source License

@Override
public void draw(GameObject target) {
    color.glColor();//from ww  w  . ja v  a2s  .  com
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glVertex2f(1.0f, 1.0f);
    GL11.glVertex2f(1.0f, -1.0f);
    GL11.glVertex2f(-1.0f, -1.0f);
    GL11.glVertex2f(-1.0f, 1.0f);
    GL11.glEnd();
}

---

From source file:game.engine.core.CoreModule.java

License:Open Source License

/**
 * Constructor.//  w  ww.  j  a va 2  s .  c  om
 * 
 * @param scriptEngine the Nashorn engine
 */
public CoreModule(ScriptEngine scriptEngine) {
    try {

        final EventListener positionTransformListener = new EventListener(null, "beforeDraw") {
            @Override
            public void handleEvent(GameObject gameObject, Object payload) {
                PositionData data = (PositionData) gameObject.get(CoreModule.this.position);
                GL11.glTranslatef(data.x, data.y, 0.0f);
            }
        };

        position = new Behavior(new Applicator() {
            @Override
            public void apply(GameObject target, Object rawParameters, Behavior behavior) {
                PositionData data = new PositionData();
                if (rawParameters != null) {
                    JSObject parameters = (JSObject) jdk.nashorn.api.scripting.ScriptUtils.wrap(rawParameters);
                    if (parameters.getMember("x") instanceof Number) {
                        data.x = ((Number) parameters.getMember("x")).floatValue();
                    }
                    if (parameters.getMember("y") instanceof Number) {
                        data.y = ((Number) parameters.getMember("y")).floatValue();
                    }
                }
                target.set(CoreModule.this.position, data);
                target.addListener(positionTransformListener);
            }
        });

        final EventListener drawRectangleListener = new EventListener(null, "draw") {
            @Override
            public void handleEvent(GameObject gameObject, Object payload) {
                GL11.glColor4ub((byte) 255, (byte) 255, (byte) 255, (byte) 255);
                GL11.glBegin(GL11.GL_QUADS);
                GL11.glVertex2f(1.0f, 1.0f);
                GL11.glVertex2f(1.0f, -1.0f);
                GL11.glVertex2f(-1.0f, -1.0f);
                GL11.glVertex2f(-1.0f, 1.0f);
                GL11.glEnd();
            }
        };

        rectangle = new Behavior(new Applicator() {
            @Override
            public void apply(GameObject target, Object parameters, Behavior behavior) {
                target.addListener(drawRectangleListener);
            }
        });

        leftRight = new Behavior(new Applicator() {
            @Override
            public void apply(GameObject target, Object parameters, Behavior behavior) {
                target.set(leftRight, "left");
            }
        });

        final EventListener drawSpriteListener = new EventListener(null, "draw") {
            @Override
            public void handleEvent(GameObject gameObject, Object payload) {
                SpriteProvider spriteProvider = (SpriteProvider) gameObject.get(sprite);
                if (spriteProvider != null) {
                    Sprite sprite = spriteProvider.provideSprite(gameObject);
                    if (sprite != null) {
                        sprite.draw();
                    }
                }
            }
        };

        sprite = new Behavior(new Applicator() {
            @Override
            public void apply(GameObject target, Object parameters, Behavior behavior) {
                if (parameters instanceof SpriteProvider) {
                    target.set(sprite, parameters);
                } else {
                    throw new RuntimeException("invalid sprite provider");
                }
                target.addListener(drawSpriteListener);
            }
        });

    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

---

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