1 package org.newdawn.slick.opengl.renderer;
2
3 /**
4 * The description of a class able to render line strips through
5 * OpenGL
6 *
7 * @author kevin
8 */
9 public interface LineStripRenderer {
10 /**
11 * Check if we should apply default line fixes
12 *
13 * @return True if we should apply GL fixes
14 */
15 public abstract boolean applyGLLineFixes();
16
17 /**
18 * Start the line strips
19 */
20 public abstract void start();
21
22 /**
23 * End the line strips
24 */
25 public abstract void end();
26
27 /**
28 * Add a vertex
29 *
30 * @param x The x coordinate of the vertex
31 * @param y The y coordinate of the vertex
32 */
33 public abstract void vertex(float x, float y);
34
35 /**
36 * Apply a colour to the next vertex
37 *
38 * @param r The red component of the colour
39 * @param g The green component of the colour
40 * @param b The blue component of the colour
41 * @param a The alpha component of the colour
42 */
43 public abstract void color(float r, float g, float b, float a);
44
45 /**
46 * Set the width of the lines to be drawn
47 *
48 * @param width The width of the lines to be drawn
49 */
50 public abstract void setWidth(float width);
51
52 /**
53 * Indicate whether antialiasing should be applied
54 *
55 * @param antialias True if antialiasing should be applied
56 */
57 public abstract void setAntiAlias(boolean antialias);
58
59 /**
60 * Indicate if we should render end caps
61 *
62 * @param caps True if we should render end caps
63 */
64 public void setLineCaps(boolean caps);
65
66 }