我需要弄清楚如何绘制在单元格中心传递的垂直和水平线。
顺便说一下,我有一个带有100x100单元格的2D网格,我怎样才能画出那些通过4个部分划分每个单元格的单元格内的线条?
我用下面的画来画画:
//Draw grid lines horizontally and vertically
for (int i = 0; i < gameBoard.length; i++) {
if((i * cellWidth) + xOffset > 0 && (i * cellWidth) + xOffset < width) {
canvas.drawLine((i * cellWidth) + xOffset, 0, (i * cellWidth) + xOffset, height, blackPaint);
}
}
for (int i = 0; i < gameBoard[0].length; i++) {
if((i * cellHeight) + yOffset > 0 && (i * cellHeight) + yOffset < height) {
canvas.drawLine(0, (i * cellHeight) + yOffset, width, (i * cellHeight) + yOffset, blackPaint);
}
}
这为此绘制了一些类似的东西(每个单元格都有一个GestureDetector)
找不到在每个单元格中绘制其他行的方法,以便将它分成四个部分。
像这样的东西(红色是细胞):
答案 0 :(得分:2)
//Draw grid lines horizontally and vertically
for (int i = 0; i < gameBoard.length; i++) {
if((i * cellWidth) + xOffset > 0 && (i * cellWidth) + xOffset < width) {
canvas.drawLine((i * cellWidth) + xOffset, 0, (i * cellWidth) + xOffset, height, blackPaint);
}
}
for (int i = 0; i < gameBoard[0].length; i++) {
if((i * cellHeight) + yOffset > 0 && (i * cellHeight) + yOffset < height) {
canvas.drawLine(0, (i * cellHeight) + yOffset, width, (i * cellHeight) + yOffset, blackPaint);
}
}
xOffset += cellWidth * 0.5f;
yOffset += cellHeight * 0.5f;
//Draw grid lines horizontally and vertically AGAIN.. but now with offsets moved half size to the right/bottom
for (int i = 0; i < gameBoard.length; i++) {
if((i * cellWidth) + xOffset > 0 && (i * cellWidth) + xOffset < width) {
canvas.drawLine((i * cellWidth) + xOffset, 0, (i * cellWidth) + xOffset, height, blackPaint);
}
}
for (int i = 0; i < gameBoard[0].length; i++) {
if((i * cellHeight) + yOffset > 0 && (i * cellHeight) + yOffset < height) {
canvas.drawLine(0, (i * cellHeight) + yOffset, width, (i * cellHeight) + yOffset, blackPaint);
}
}
作为旁注,我会考虑使用函数而不是重复代码!祝你好运;)