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:io.github.minecraftgui.controllers.Render.java

License:Open Source License

public void fillRectangle(double x, double y, double width, double height, Color color) {
    if (color.getAlpha() != 0) {
        GL11.glDisable(GL11.GL_TEXTURE_2D);
        GL11.glEnable(GL11.GL_BLEND);/*from   ww w.j  a v a  2 s  .  c o  m*/
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        GL11.glColor4f((color.getRed() / 255.0f), (color.getGreen() / 255.0f), (color.getBlue() / 255.0f),
                (color.getAlpha() / 255.0f));

        GL11.glBegin(GL11.GL_QUADS);
        {
            GL11.glVertex2d(x, y);

            GL11.glVertex2d(x, y + height);

            GL11.glVertex2d(x + width, y + height);

            GL11.glVertex2d(x + width, y);
        }
        GL11.glEnd();
        GL11.glEnable(GL11.GL_TEXTURE_2D);
    }
}

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From source file:io.github.minecraftgui.controllers.Render.java

License:Open Source License

public void drawRectangle(double x, double y, double width, double height, Color color) {
    if (color.getAlpha() != 0) {
        GL11.glDisable(GL11.GL_TEXTURE_2D);
        GL11.glEnable(GL11.GL_BLEND);/*  w  w w  .j av a  2 s.  c om*/
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

        GL11.glColor4f((color.getRed() / 255.0f), (color.getGreen() / 255.0f), (color.getBlue() / 255.0f),
                (color.getAlpha() / 255.0f));

        GL11.glBegin(GL11.GL_LINES);
        {
            GL11.glVertex2d(x, y);
            GL11.glVertex2d(x, y + height);

            GL11.glVertex2d(x, y + height);
            GL11.glVertex2d(x + width, y + height);

            GL11.glVertex2d(x + width, y + height);
            GL11.glVertex2d(x + width, y);

            GL11.glVertex2d(x + width, y);
            GL11.glVertex2d(x, y);
        }
        GL11.glEnd();
        GL11.glEnable(GL11.GL_TEXTURE_2D);
    }
}

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From source file:io.github.minecraftgui.controllers.Render.java

License:Open Source License

public void drawTexture(Texture texture, double x, double y, double width, double height) {
    GL11.glEnable(GL11.GL_TEXTURE_2D);// w w w .  ja va 2 s . c o m
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, texture.getTextureID());
    GL11.glEnable(GL11.GL_BLEND);
    GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);

    GL11.glColor4f(1, 1, 1, 1);

    GL11.glBegin(GL11.GL_QUADS);
    {
        GL11.glTexCoord2f(0, 0);
        GL11.glVertex2d(x, y);

        GL11.glTexCoord2f(0, texture.getHeight());
        GL11.glVertex2d(x, y + height);

        GL11.glTexCoord2f(texture.getWidth(), texture.getHeight());
        GL11.glVertex2d(x + width, y + height);

        GL11.glTexCoord2f(texture.getWidth(), 0);
        GL11.glVertex2d(x + width, y);
    }
    GL11.glEnd();

    modInterface.bindMinecraftTextures();
}

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From source file:io.root.gfx.glutils.GL.java

License:Apache License

public static void glBegin(int geomType) {
    GL11.glBegin(geomType);
}

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From source file:itdelatrisu.opsu.render.CurveRenderState.java

License:Open Source License

/**
 * Draw a curve to the screen that's tinted with `color`. The first time
 * this is called this caches the image result of the curve and on subsequent
 * runs it just draws the cached copy to the screen.
 * @param color tint of the curve//from   w w w  .j a va  2s .  c  om
 * @param borderColor the curve border color
 * @param curve the points along the curve to be drawn
 */
public void draw(Color color, Color borderColor, Vec2f[] curve) {
    float alpha = color.a;

    // if this curve hasn't been drawn, draw it and cache the result
    if (fbo == null) {
        FrameBufferCache cache = FrameBufferCache.getInstance();
        Rendertarget mapping = cache.get(hitObject);
        if (mapping == null)
            mapping = cache.insert(hitObject);
        fbo = mapping;

        int oldFb = GL11.glGetInteger(EXTFramebufferObject.GL_FRAMEBUFFER_BINDING_EXT);
        int oldTex = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);

        //glGetInteger requires a buffer of size 16, even though just 4
        //values are returned in this specific case
        IntBuffer oldViewport = BufferUtils.createIntBuffer(16);
        GL11.glGetInteger(GL11.GL_VIEWPORT, oldViewport);
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, fbo.getID());
        GL11.glViewport(0, 0, fbo.width, fbo.height);
        GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        Colors.WHITE_FADE.a = 1.0f;
        this.draw_curve(color, borderColor, curve);
        color.a = 1f;

        GL11.glBindTexture(GL11.GL_TEXTURE_2D, oldTex);
        EXTFramebufferObject.glBindFramebufferEXT(EXTFramebufferObject.GL_FRAMEBUFFER_EXT, oldFb);
        GL11.glViewport(oldViewport.get(0), oldViewport.get(1), oldViewport.get(2), oldViewport.get(3));
        Colors.WHITE_FADE.a = alpha;
    }

    // draw a fullscreen quad with the texture that contains the curve
    GL11.glEnable(GL11.GL_TEXTURE_2D);
    GL11.glDisable(GL11.GL_TEXTURE_1D);
    GL11.glBindTexture(GL11.GL_TEXTURE_2D, fbo.getTextureID());
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glColor4f(1.0f, 1.0f, 1.0f, alpha);
    GL11.glTexCoord2f(1.0f, 1.0f);
    GL11.glVertex2i(fbo.width, 0);
    GL11.glTexCoord2f(0.0f, 1.0f);
    GL11.glVertex2i(0, 0);
    GL11.glTexCoord2f(0.0f, 0.0f);
    GL11.glVertex2i(0, fbo.height);
    GL11.glTexCoord2f(1.0f, 0.0f);
    GL11.glVertex2i(fbo.width, fbo.height);
    GL11.glEnd();
}

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From source file:itemrender.client.RenderTickHandler.java

License:MIT License

@SubscribeEvent
public void tick(TickEvent.RenderTickEvent event) {
    if (event.phase == TickEvent.Phase.END)
        if (keybindToRender != null && renderPreview) {
            int originalTexture = GL11.glGetInteger(GL11.GL_TEXTURE_BINDING_2D);

            // Bind framebuffer texture
            keybindToRender.fbo.bind();/*from   ww  w  .ja v  a2 s. co  m*/
            GL11.glBegin(GL11.GL_QUADS);
            GL11.glTexCoord2f(0, 0);
            GL11.glVertex2i(0, 0);
            GL11.glTexCoord2f(0, 1);
            GL11.glVertex2i(0, 128);
            GL11.glTexCoord2f(1, 1);
            GL11.glVertex2i(128, 128);
            GL11.glTexCoord2f(1, 0);
            GL11.glVertex2i(128, 0);
            GL11.glEnd();

            // Restore old texture
            GlStateManager.bindTexture(originalTexture);
        }
}

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From source file:kinect.KinectModule.java

License:Open Source License

/**
 * Mthode de dessin de cercle OPenGL//from  www .j a  v a2s  .c  o m
 * @param userID l'ID de l'utilisateur
 * @param joint la position du joint  dessiner
 */
private void drawCircle(int userID, SkeletonJoint joint) {
    SkeletonJointPosition pos = joints.get(userID).get(joint);
    Vec2 position = new Vec2(pos.getPosition().getX(), Display.getHeight() - pos.getPosition().getY());
    float radius = 5;
    GL11.glBegin(GL11.GL_TRIANGLE_FAN);
    GL11.glVertex2f(position.x, position.y);
    float angle = 0.0f;
    for (angle = 0; angle < 2.0 * Math.PI + 0.0001;) {
        float xpos = (float) (position.x + Math.cos(angle) * radius);
        float ypos = (float) (position.y + Math.sin(angle) * radius);
        GL11.glVertex2f(xpos, ypos);
        angle += 2.0 * Math.PI / 20;
    }
    GL11.glEnd();

}

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From source file:kuake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_Char(int x, int y, int num) {

    num &= 255;//from   w ww . j a v  a  2 s . c om

    if ((num & 127) == 32)
        return; // space

    if (y <= -8)
        return; // totally off screen

    int row = num >> 4;
    int col = num & 15;

    float frow = row * 0.0625f;
    float fcol = col * 0.0625f;
    float size = 0.0625f;

    GL_Bind(draw_chars.texnum);

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(fcol, frow);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(fcol + size, frow);
    GL11.glVertex2f(x + 8, y);
    GL11.glTexCoord2f(fcol + size, frow + size);
    GL11.glVertex2f(x + 8, y + 8);
    GL11.glTexCoord2f(fcol, frow + size);
    GL11.glVertex2f(x, y + 8);
    GL11.glEnd();
}

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From source file:kuake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_StretchPic(int x, int y, int w, int h, String pic) {

    image_t image;//from   w  w w  . j  a  v a 2s .  c o m

    image = Draw_FindPic(pic);
    if (image == null) {
        VID.Printf(Defines.PRINT_ALL, "Can't find pic: " + pic + '\n');
        return;
    }

    if (scrap_dirty)
        Scrap_Upload();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha)
        GL11.glDisable(GL11.GL_ALPHA_TEST);

    GL_Bind(image.texnum);
    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(image.sl, image.tl);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(image.sh, image.tl);
    GL11.glVertex2f(x + w, y);
    GL11.glTexCoord2f(image.sh, image.th);
    GL11.glVertex2f(x + w, y + h);
    GL11.glTexCoord2f(image.sl, image.th);
    GL11.glVertex2f(x, y + h);
    GL11.glEnd();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha)
        GL11.glEnable(GL11.GL_ALPHA_TEST);
}

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From source file:kuake2.render.lwjgl.Draw.java

License:Open Source License

protected void Draw_Pic(int x, int y, String pic) {
    image_t image;//  w w  w  .ja va2 s.  co m

    image = Draw_FindPic(pic);
    if (image == null) {
        VID.Printf(Defines.PRINT_ALL, "Can't find pic: " + pic + '\n');
        return;
    }
    if (scrap_dirty)
        Scrap_Upload();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha)
        GL11.glDisable(GL11.GL_ALPHA_TEST);

    GL_Bind(image.texnum);

    GL11.glBegin(GL11.GL_QUADS);
    GL11.glTexCoord2f(image.sl, image.tl);
    GL11.glVertex2f(x, y);
    GL11.glTexCoord2f(image.sh, image.tl);
    GL11.glVertex2f(x + image.width, y);
    GL11.glTexCoord2f(image.sh, image.th);
    GL11.glVertex2f(x + image.width, y + image.height);
    GL11.glTexCoord2f(image.sl, image.th);
    GL11.glVertex2f(x, y + image.height);
    GL11.glEnd();

    if (((gl_config.renderer == GL_RENDERER_MCD) || ((gl_config.renderer & GL_RENDERER_RENDITION) != 0))
            && !image.has_alpha)
        GL11.glEnable(GL11.GL_ALPHA_TEST);
}

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