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(svn r6758) -Feature: Add a measurement tool that will show dimensions and height

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differences of various draggable tools (inspiration, concept and double
 checking by MeusH).
This commit is contained in:
Darkvater
2006-10-12 15:13:40 +00:00
parent 36ca1d9c87
commit f2fd789cc6
8 changed files with 278 additions and 44 deletions
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230
viewport.c
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@@ -1937,13 +1937,22 @@ void VpSetPlaceSizingLimit(int limit)
_thd.sizelimit = limit;
}
void VpSetPresizeRange(uint from, uint to)
/**
* Highlights all tiles between a set of two tiles. Used in dock and tunnel placement
* @param from TileIndex of the first tile to highlight
* @param to TileIndex of the last tile to highlight */
void VpSetPresizeRange(TileIndex from, TileIndex to)
{
uint distance = DistanceManhattan(from, to) + 1;
_thd.selend.x = TileX(to) * TILE_SIZE;
_thd.selend.y = TileY(to) * TILE_SIZE;
_thd.selstart.x = TileX(from) * TILE_SIZE;
_thd.selstart.y = TileY(from) * TILE_SIZE;
_thd.next_drawstyle = HT_RECT;
/* show measurement only if there is any length to speak of */
if (distance > 1) GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, &distance);
}
static void VpStartPreSizing(void)
@@ -1986,6 +1995,120 @@ static byte Check2x1AutoRail(int mode)
return 0; // avoids compiler warnings
}
/** Check if the direction of start and end tile should be swapped based on
* the dragging-style. Default directions are:
* in the case of a line (HT_RAIL, HT_LINE): DIR_NE, DIR_NW, DIR_N, DIR_E
* in the case of a rect (HT_RECT, HT_POINT): DIR_S, DIR_E
* For example dragging a rectangle area from south to north should be swapped to
* north-south (DIR_S) to obtain the same results with less code. This is what
* the return value signifies.
* @param style HighLightStyle dragging style
* @param start_tile, end_tile start and end tile of drag
* @param boolean value which when true means start/end should be swapped */
static bool SwapDirection(HighLightStyle style, TileIndex start_tile, TileIndex end_tile)
{
uint start_x = TileX(start_tile);
uint start_y = TileY(start_tile);
uint end_x = TileX(end_tile);
uint end_y = TileY(end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RAIL:
case HT_LINE: return (end_x > start_x || (end_x == start_x && end_y > start_y));
case HT_RECT:
case HT_POINT: return (end_x != start_x && end_y < start_y);
default: NOT_REACHED();
}
return false;
}
/** Calculates height difference between one tile and another
* Multiplies the result to suit the standard given by minimap - 50 meters high
* To correctly get the height difference we need the direction we are dragging
* in, as well as with what kind of tool we are dragging. For example a horizontal
* autorail tool that starts in bottom and ends at the top of a tile will need the
* maximum of SW,S and SE,N corners respectively. This is handled by the lookup table below
* See _tileoffs_by_dir in map.c for the direction enums if you can't figure out
* the values yourself.
* @param style HightlightStyle of drag. This includes direction and style (autorail, rect, etc.)
* @param distance amount of tiles dragged, important for horizontal/vertical drags
* ignored for others
* @param start_tile, end_tile start and end tile of drag operation
* @return height difference between two tiles. Tile measurement tool utilizes
* this value in its tooltips */
static int CalcHeightdiff(HighLightStyle style, uint distance, TileIndex start_tile, TileIndex end_tile)
{
bool swap = SwapDirection(style, start_tile, end_tile);
byte style_t;
uint h0, h1, ht; // start heigth, end height, and temp variable
if (start_tile == end_tile) return 0;
if (swap) swap_tile(&start_tile, &end_tile);
switch (style & HT_DRAG_MASK) {
case HT_RECT: {
static const TileIndexDiffC heightdiff_area_by_dir[] = {
/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */
/* End */ {0, 1}, /* Dragging east */ {1, 1} /* Dragging south */
};
/* In the case of an area we can determine whether we were dragging south or
* east by checking the X-coordinates of the tiles */
style_t = (byte)(TileX(end_tile) > TileX(start_tile));
start_tile = TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_area_by_dir[style_t]));
end_tile = TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_area_by_dir[2 + style_t]));
}
/* Fallthrough */
case HT_POINT:
h0 = TileHeight(start_tile);
h1 = TileHeight(end_tile);
break;
default: { /* All other types, this is mostly only line/autorail */
static const HighLightStyle flip_style_direction[] = {
HT_DIR_X, HT_DIR_Y, HT_DIR_HL, HT_DIR_HU, HT_DIR_VR, HT_DIR_VL
};
static const TileIndexDiffC heightdiff_line_by_dir[] = {
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_X */ {0, 1}, {1, 1}, /* HT_DIR_Y */
/* Start */ {1, 0}, {0, 0}, /* HT_DIR_HU */ {1, 0}, {1, 1}, /* HT_DIR_HL */
/* Start */ {1, 0}, {1, 1}, /* HT_DIR_VL */ {0, 1}, {1, 1}, /* HT_DIR_VR */
/* Start */ {0, 1}, {0, 0}, /* HT_DIR_X */ {1, 0}, {0, 0}, /* HT_DIR_Y */
/* End */ {0, 1}, {0, 0}, /* HT_DIR_HU */ {1, 1}, {0, 1}, /* HT_DIR_HL */
/* End */ {1, 0}, {0, 0}, /* HT_DIR_VL */ {0, 0}, {0, 1}, /* HT_DIR_VR */
};
distance %= 2; // we're only interested if the distance is even or uneven
style &= HT_DIR_MASK;
/* To handle autorail, we do some magic to be able to use a lookup table.
* Firstly if we drag the other way around, we switch start&end, and if needed
* also flip the drag-position. Eg if it was on the left, and the distance is even
* that means the end, which is now the start is on the right */
if (swap && distance == 0) style = flip_style_direction[style];
/* Use lookup table for start-tile based on HighLightStyle direction */
style_t = style * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h0 = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t])));
ht = TileHeight(TILE_ADD(start_tile, ToTileIndexDiff(heightdiff_line_by_dir[style_t + 1])));
h0 = maxu(h0, ht);
/* Use lookup table for end-tile based on HighLightStyle direction
* flip around side (lower/upper, left/right) based on distance */
if (distance == 0) style_t = flip_style_direction[style] * 2;
assert(style_t < lengthof(heightdiff_line_by_dir) - 13);
h1 = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t])));
ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));
h1 = maxu(h1, ht);
} break;
}
if (swap) swap_uint32(&h0, &h1);
/* Minimap shows height in intervals of 50 meters, let's do the same */
return (int)(h1 - h0) * 50;
}
// while dragging
static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int method)
@@ -2087,6 +2210,30 @@ static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int meth
}
}
}
if (_patches.measure_tooltip) {
TileIndex t0 = TileVirtXY(thd->selstart.x, thd->selstart.y);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
int heightdiff = CalcHeightdiff(b, distance, t0, t1);
uint params[2];
/* If we are showing a tooltip for horizontal or vertical drags,
* 2 tiles have a length of 1. To bias towards the ceiling we add
* one before division. It feels more natural to count 3 lengths as 2 */
if ((b & HT_DIR_MASK) != HT_DIR_X && (b & HT_DIR_MASK) != HT_DIR_Y) {
distance = (distance + 1) / 2;
}
params[0] = distance;
if (heightdiff == 0) {
GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, params);
} else {
params[1] = heightdiff;
GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH_HEIGHTDIFF, 2, params);
}
}
thd->selend.x = x;
thd->selend.y = y;
thd->next_drawstyle = b;
@@ -2101,6 +2248,7 @@ static void CalcRaildirsDrawstyle(TileHighlightData *thd, int x, int y, int meth
void VpSelectTilesWithMethod(int x, int y, int method)
{
int sx, sy;
HighLightStyle style;
if (x == -1) {
_thd.selend.x = -1;
@@ -2124,32 +2272,80 @@ void VpSelectTilesWithMethod(int x, int y, int method)
sy = _thd.selstart.y;
switch (method) {
case VPM_FIX_X:
x = sx;
break;
case VPM_FIX_Y:
y = sy;
break;
case VPM_X_OR_Y:
case VPM_X_OR_Y: /* drag in X or Y direction */
if (myabs(sy - y) < myabs(sx - x)) {
y = sy;
style = HT_DIR_X;
} else {
x = sx;
style = HT_DIR_Y;
}
break;
goto calc_heightdiff_single_direction;
case VPM_FIX_X: /* drag in Y direction */
x = sx;
style = HT_DIR_Y;
goto calc_heightdiff_single_direction;
case VPM_FIX_Y: /* drag in X direction */
y = sy;
style = HT_DIR_X;
case VPM_X_AND_Y:
break;
calc_heightdiff_single_direction:;
if (_patches.measure_tooltip) {
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint distance = DistanceManhattan(t0, t1) + 1;
int heightdiff = CalcHeightdiff((_thd.next_drawstyle & HT_DRAG_MASK) | style, 0, t0, t1);
uint params[2];
// limit the selected area to a 10x10 rect.
case VPM_X_AND_Y_LIMITED: {
int limit = (_thd.sizelimit - 1) * 16;
params[0] = distance;
if (heightdiff == 0) {
GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH, 1, params);
} else {
params[1] = heightdiff;
GuiShowTooltipsWithArgs(STR_MEASURE_LENGTH_HEIGHTDIFF, 2, params);
}
} break;
case VPM_X_AND_Y_LIMITED: { /* drag an X by Y constrained rect area */
int limit = (_thd.sizelimit - 1) * TILE_SIZE;
x = sx + clamp(x - sx, -limit, limit);
y = sy + clamp(y - sy, -limit, limit);
break;
/* Fallthrough */
case VPM_X_AND_Y: { /* drag an X by Y area */
if (_patches.measure_tooltip) {
TileIndex t0 = TileVirtXY(sx, sy);
TileIndex t1 = TileVirtXY(x, y);
uint dx = abs(TileX(t0) - TileX(t1)) + 1;
uint dy = abs(TileY(t0) - TileY(t1)) + 1;
HighLightStyle style = _thd.next_drawstyle;
int heightdiff;
uint params[3];
/* If dragging an area (eg dynamite tool) and it is actually a single
* row/column, change the type to 'line' to get proper calculation for height */
if (style & HT_RECT) {
if (dx == 1) {
style = HT_LINE | HT_DIR_Y;
} else if (dy == 1) {
style = HT_LINE | HT_DIR_X;
}
}
heightdiff = CalcHeightdiff(style, 0, t0, t1);
params[0] = dx;
params[1] = dy;
if (heightdiff == 0) {
GuiShowTooltipsWithArgs(STR_MEASURE_AREA, 2, params);
} else {
params[2] = heightdiff;
GuiShowTooltipsWithArgs(STR_MEASURE_AREA_HEIGHTDIFF, 3, params);
}
}
} break;
}
default: NOT_REACHED();
}
_thd.selend.x = x;