Example usage for android.graphics Rect exactCenterX

Introduction

In this page you can find the example usage for android.graphics Rect exactCenterX.

Prototype

public final float exactCenterX() 

Source Link

Usage

From source file:com.breakout.main.GameState.java

/**
 * Renders debug features.//from  www  . j av  a2s .  c  o m
 * <p>
 * This function is allowed to violate the "don't allocate objects" rule.
 */
void drawDebugStuff() {

    // Draw a red outline rectangle around the ball.  This shows the area that was
    // examined for collisions during the "coarse" pass.
    OutlineAlignedRect.prepareToDraw();
    mDebugCollisionRect.draw();
    OutlineAlignedRect.finishedDrawing();

    // Draw the entire message texture so we can see what it looks like.
    if (true) {
        int textureWidth = mTextRes.getTextureWidth();
        int textureHeight = mTextRes.getTextureHeight();
        float scale = (ARENA_WIDTH * STATUS_MESSAGE_WIDTH_PERC) / textureWidth;

        // Draw an orange rect around the texture.
        OutlineAlignedRect outline = new OutlineAlignedRect();
        outline.setPosition(ARENA_WIDTH / 2, ARENA_HEIGHT / 2);
        outline.setScale(textureWidth * scale + 2, textureHeight * scale + 2);
        outline.setColor(1.0f, 0.65f, 0.0f);
        OutlineAlignedRect.prepareToDraw();
        outline.draw();
        OutlineAlignedRect.finishedDrawing();

        // Draw the full texture.  Note you can set the background to opaque white in
        // TextResources to see what the drop shadow looks like.
        Rect boundsRect = new Rect(0, 0, textureWidth, textureHeight);
        TexturedAlignedRect msgBox = mGameStatusMessages;
        msgBox.setTextureCoords(boundsRect);
        msgBox.setScale(textureWidth * scale, textureHeight * scale);
        TexturedAlignedRect.prepareToDraw();
        msgBox.draw();
        TexturedAlignedRect.finishedDrawing();

        // Draw a rectangle around each individual text item.  We draw a different one each
        // time to get a flicker effect, so it doesn't fully obscure the text.
        if (true) {
            outline.setColor(1.0f, 1.0f, 1.0f);
            int stringNum = mDebugFramedString;
            mDebugFramedString = (mDebugFramedString + 1) % TextResources.getNumStrings();
            boundsRect = mTextRes.getTextureRect(stringNum);
            // The bounds rect is in bitmap coordinates, with (0,0) in the top left.  Translate
            // it to an offset from the center of the bitmap, and find the center of the rect.
            float boundsCenterX = boundsRect.exactCenterX() - (textureWidth / 2);
            float boundsCenterY = boundsRect.exactCenterY() - (textureHeight / 2);
            // Now scale it to arena coordinates, using the same scale factor we used to
            // draw the texture with all the messages, and translate it to the center of
            // the arena.  We need to invert Y to match GL conventions.
            boundsCenterX = ARENA_WIDTH / 2 + (boundsCenterX * scale);
            boundsCenterY = ARENA_HEIGHT / 2 - (boundsCenterY * scale);
            // Set the values and draw the rect.
            outline.setPosition(boundsCenterX, boundsCenterY);
            outline.setScale(boundsRect.width() * scale, boundsRect.height() * scale);
            OutlineAlignedRect.prepareToDraw();
            outline.draw();
            OutlineAlignedRect.finishedDrawing();
        }
    }
}

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