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[ios] add runtime styling command for adding building extrusions

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This commit is contained in:
Konstantin Käfer
2017-06-07 10:26:21 +02:00
parent 0335351d9a
commit e1b0f94be0
1 changed files with 38 additions and 1 deletions
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39
platform/ios/app/MBXViewController.m
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@@ -52,7 +52,8 @@ typedef NS_ENUM(NSInteger, MBXSettingsAnnotationsRows) {
};
typedef NS_ENUM(NSInteger, MBXSettingsRuntimeStylingRows) {
MBXSettingsRuntimeStylingWater = 0,
MBXSettingsRuntimeStylingBuildingExtrusions = 0,
MBXSettingsRuntimeStylingWater,
MBXSettingsRuntimeStylingRoads,
MBXSettingsRuntimeStylingRaster,
MBXSettingsRuntimeStylingShape,
@@ -324,6 +325,7 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
break;
case MBXSettingsRuntimeStyling:
[settingsTitles addObjectsFromArray:@[
@"Add Building Extrusions",
@"Style Water With Function",
@"Style Roads With Function",
@"Add Raster & Apply Function",
@@ -523,6 +525,9 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
case MBXSettingsRuntimeStyling:
switch (indexPath.row)
{
case MBXSettingsRuntimeStylingBuildingExtrusions:
[self styleBuildingExtrusions];
break;
case MBXSettingsRuntimeStylingWater:
[self styleWaterLayer];
break;
@@ -860,6 +865,38 @@ typedef NS_ENUM(NSInteger, MBXSettingsMiscellaneousRows) {
[self.mapView showAnnotations:annotations animated:YES];
}
- (void)styleBuildingExtrusions
{
MGLSource* source = [self.mapView.style sourceWithIdentifier:@"composite"];
if (source) {
MGLFillExtrusionStyleLayer* layer = [[MGLFillExtrusionStyleLayer alloc] initWithIdentifier:@"extrudedBuildings" source:source];
layer.sourceLayerIdentifier = @"building";
layer.predicate = [NSPredicate predicateWithFormat:@"extrude == 'true' AND height > 0"];
layer.fillExtrusionBase = [MGLStyleValue valueWithInterpolationMode:MGLInterpolationModeIdentity sourceStops:nil attributeName:@"min_height" options:nil];
layer.fillExtrusionHeight = [MGLStyleValue valueWithInterpolationMode:MGLInterpolationModeIdentity sourceStops:nil attributeName:@"height" options:nil];
// Set the fill color to that of the existing building footprint layer, if it exists.
MGLFillStyleLayer* buildingLayer = (MGLFillStyleLayer*)[self.mapView.style layerWithIdentifier:@"building"];
if (buildingLayer) {
if (buildingLayer.fillColor) {
layer.fillExtrusionColor = buildingLayer.fillColor;
} else {
layer.fillExtrusionColor = [MGLStyleValue valueWithRawValue:[UIColor whiteColor]];
}
layer.fillExtrusionOpacity = [MGLStyleValue<NSNumber *> valueWithRawValue:@0.75];
}
MGLStyleLayer* labelLayer = [self.mapView.style layerWithIdentifier:@"waterway-label"];
if (labelLayer) {
[self.mapView.style insertLayer:layer belowLayer:labelLayer];
} else {
[self.mapView.style addLayer:layer];
}
}
}
- (void)styleWaterLayer
{
MGLFillStyleLayer *waterLayer = (MGLFillStyleLayer *)[self.mapView.style layerWithIdentifier:@"water"];