ISafeCanvas.java 文件源码

/**
 * Draw the array of vertices, interpreted as triangles (based on mode). The verts array is
 * required, and specifies the x,y pairs for each vertex. If texs is non-null, then it is used
 * to specify the coordinate in shader coordinates to use at each vertex (the paint must have a
 * shader in this case). If there is no texs array, but there is a color array, then each color
 * is interpolated across its corresponding triangle in a gradient. If both texs and colors
 * arrays are present, then they behave as before, but the resulting color at each pixels is
 * the
 * result of multiplying the colors from the shader and the color-gradient together. The
 * indices
 * array is optional, but if it is present, then it is used to specify the index of each
 * triangle, rather than just walking through the arrays in order.
 *
 * @param mode How to interpret the array of vertices
 * @param vertexCount The number of values in the vertices array (and corresponding texs and
 * colors
 * arrays if non-null). Each logical vertex is two values (x, y), vertexCount must be
 * a multiple of 2.
 * @param verts Array of vertices for the mesh
 * @param vertOffset Number of values in the verts to skip before drawing.
 * @param texs May be null. If not null, specifies the coordinates to sample into the current
 * shader (e.g. bitmap tile or gradient)
 * @param texOffset Number of values in texs to skip before drawing.
 * @param colors May be null. If not null, specifies a color for each vertex, to be
 * interpolated
 * across the triangle.
 * @param colorOffset Number of values in colors to skip before drawing.
 * @param indices If not null, array of indices to reference into the vertex (texs, colors)
 * array.
 * @param indexCount number of entries in the indices array (if not null).
 * @param paint Specifies the shader to use if the texs array is non-null.
 */
public abstract void drawVertices(VertexMode mode, int vertexCount, double[] verts,
        int vertOffset, float[] texs, int texOffset, int[] colors, int colorOffset,
        short[] indices, int indexOffset, int indexCount, SafePaint paint);