iOS & macOS charts - Examples
Please note! These examples are new to SciChart iOS v4 release! SciChart’s OpenGL ES and Metal iOS and Metal macOS Chart library ships with hundred of Objective-C and Swift iOS & macOS Chart Examples which you can browse, play with and view the source-code. All of this is possible with the new and improved SciChart iOS Examples Suite and demo application for Mac, which ships as part of the SciChart SDK.
This example demonstrates how to use the <>PaletteProvider API to color SurfaceMesh cells individually.
Please read more about applying Palettes to a Surface Mesh in SciChart iOS 3D Charting Documentation.
The Swift and Objective-C source code for the iOS and macOS Surface Mesh 3D PaletteProvider example is included below (Scroll down!).
Did you know that we have the source code for all our example available for free on Github?
Clone the SciChart.iOS.Examples from Github.
Also the SciChart iOS and Scichart macOS Trials contain the full source for the examples (link below).
SurfaceMeshWithMetaDataProvider3DChartView.m
View source code//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// SurfaceMeshWithMetaDataProvider3DChartView.m is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************
#import "SurfaceMeshWithMetaDataProvider3DChartView.h"
#import "SCDDataManager.h"
#pragma mark - Surface Mesh Metadata Provider
@interface SurfaceMeshMetaDataProvider3D : SCIMetadataProvider3DBase<SCISurfaceMeshRenderableSeries3D *><ISCISurfaceMeshMetadataProvider3D>
- (instancetype)init;
@end
@implementation SurfaceMeshMetaDataProvider3D
- (instancetype)init {
return [super initWithRenderableSeriesType:SCISurfaceMeshRenderableSeries3D.class];
}
- (void)updateMeshColors:(SCIUnsignedIntegerValues *)cellColors {
SCISurfaceMeshRenderPassData3D *currentRenderPassData = (SCISurfaceMeshRenderPassData3D *)self.renderableSeries.currentRenderPassData;
NSInteger countX = currentRenderPassData.countX - 1;
NSInteger countZ = currentRenderPassData.countZ - 1;
cellColors.count = currentRenderPassData.pointsCount;
unsigned int *items = cellColors.itemsArray;
for (int x = 0; x < countX; ++x) {
for (int z = 0; z < countZ; ++z) {
NSInteger index = x * countZ + z;
unsigned int color;
if ((x >= 20 && x <= 26 && z > 0 && z < 47) || (z >= 20 && z <= 26 && x > 0 && x < 47)) {
color = 0x00FFFFFF;
} else {
color = SCDDataManager.randomColor;
}
items[index] = color;
}
}
}
@end
#pragma mark - Chart Initialization
@implementation SurfaceMeshWithMetaDataProvider3DChartView {
int _sizeX;
int _sizeZ;
NSTimeInterval _updateInterval;
NSTimer *_timer;
SCIUniformGridDataSeries3D *_ds0;
SCIUniformGridDataSeries3D *_ds1;
}
- (Class)associatedType { return SCIChartSurface3D.class; }
- (void)initExample {
_sizeX = 49;
_sizeZ = 49;
_updateInterval = 0.01;
SCINumericAxis3D *xAxis = [SCINumericAxis3D new];
xAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
xAxis.drawMajorBands = NO;
xAxis.drawLabels = NO;
xAxis.drawMajorGridLines = NO;
xAxis.drawMajorTicks = NO;
xAxis.drawMinorGridLines = NO;
xAxis.drawMinorTicks = NO;
xAxis.planeBorderThickness = 0.0;
SCINumericAxis3D *yAxis = [SCINumericAxis3D new];
yAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
yAxis.drawMajorBands = NO;
yAxis.drawLabels = NO;
yAxis.drawMajorGridLines = NO;
yAxis.drawMajorTicks = NO;
yAxis.drawMinorGridLines = NO;
yAxis.drawMinorTicks = NO;
yAxis.planeBorderThickness = 0.0;
SCINumericAxis3D *zAxis = [SCINumericAxis3D new];
zAxis.growBy = [[SCIDoubleRange alloc] initWithMin:0.1 max:0.1];
zAxis.drawMajorBands = NO;
zAxis.drawLabels = NO;
zAxis.drawMajorGridLines = NO;
zAxis.drawMajorTicks = NO;
zAxis.drawMinorGridLines = NO;
zAxis.drawMinorTicks = NO;
zAxis.planeBorderThickness = 0.0;
_ds0 = [[SCIUniformGridDataSeries3D alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double zType:SCIDataType_Double xSize:_sizeX zSize:_sizeZ];
_ds1 = [[SCIUniformGridDataSeries3D alloc] initWithXType:SCIDataType_Double yType:SCIDataType_Double zType:SCIDataType_Double xSize:_sizeX zSize:_sizeZ];
for (int x = 48; x >= 24; --x) {
double y = pow(x - 23.7, 0.3);
double y2 = pow(49.5 - x, 0.3);
[_ds0 updateYValue:@(y) atXIndex:x zIndex:24];
[_ds1 updateYValue:@(y2 - 1.505) atXIndex:x zIndex:24];
}
for (int x = 24; x >= 0; x--) {
for (int z = 49; z > 25; z--) {
double y = pow(z - 23.7, 0.3);
double y2 = pow(50.5 - z, 0.3) + 1.505;
[_ds0 updateYValue:@(y) atXIndex:x + 24 zIndex:49 - z];
[_ds0 updateYValue:@(y) atXIndex:z - 1 zIndex:24 - x];
[_ds1 updateYValue:@(y2) atXIndex:x + 24 zIndex:49 - z];
[_ds1 updateYValue:@(y2) atXIndex:z - 1 zIndex:24 - x];
[_ds0 updateYValue:@(y) atXIndex:24 - x zIndex:49 - z];
[_ds0 updateYValue:@(y) atXIndex:49 - z zIndex:24 - x];
[_ds1 updateYValue:@(y2) atXIndex:24 - x zIndex:49 - z];
[_ds1 updateYValue:@(y2) atXIndex:49 - z zIndex:24 - x];
[_ds0 updateYValue:@(y) atXIndex:24 + x zIndex:z - 1];
[_ds0 updateYValue:@(y) atXIndex:z - 1 zIndex:24 + x];
[_ds1 updateYValue:@(y2) atXIndex:24 + x zIndex:z - 1];
[_ds1 updateYValue:@(y2) atXIndex:z - 1 zIndex:x + 24];
[_ds0 updateYValue:@(y) atXIndex:24 - x zIndex:z - 1];
[_ds0 updateYValue:@(y) atXIndex:49 - z zIndex:24 + x];
[_ds1 updateYValue:@(y2) atXIndex:24 - x zIndex:z - 1];
[_ds1 updateYValue:@(y2) atXIndex:49 - z zIndex:x + 24];
}
}
unsigned int colors[11] = { 0xFF00008B, 0xFF0000FF, 0xFF5F9EA0, 0xFF00FFFF, 0xFF32CD32, 0xFFADFF2F, 0xFFFFFF00, 0xFFFF6347, 0xFFCD5C5C, 0xFFFF0000, 0xFF8B0000 };
float stops[11] = { 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0 };
SCIGradientColorPalette *palette0 = [[SCIGradientColorPalette alloc] initWithColors:colors stops:stops count:11];
SCIGradientColorPalette *palette1 = [[SCIGradientColorPalette alloc] initWithColors:colors stops:stops count:11];
SCISurfaceMeshRenderableSeries3D *rSeries1 = [SCISurfaceMeshRenderableSeries3D new];
rSeries1.dataSeries = _ds0;
rSeries1.drawMeshAs = SCIDrawMeshAs_SolidMesh;
rSeries1.drawSkirt = NO;
rSeries1.meshColorPalette = palette0;
rSeries1.metadataProvider = [SurfaceMeshMetaDataProvider3D new];
SCISurfaceMeshRenderableSeries3D *rSeries2 = [SCISurfaceMeshRenderableSeries3D new];
rSeries2.dataSeries = _ds1;
rSeries2.drawMeshAs = SCIDrawMeshAs_SolidMesh;
rSeries2.drawSkirt = NO;
rSeries2.meshColorPalette = palette1;
rSeries2.metadataProvider = [SurfaceMeshMetaDataProvider3D new];
[SCIUpdateSuspender usingWithSuspendable:self.surface withBlock:^{
self.surface.xAxis = xAxis;
self.surface.yAxis = yAxis;
self.surface.zAxis = zAxis;
[self.surface.renderableSeries add:rSeries1];
[self.surface.renderableSeries add:rSeries2];
[self.surface.chartModifiers add:[SCDExampleBaseViewController createDefaultModifiers3D]];
}];
__weak typeof(self) wSelf = self;
_timer = [NSTimer scheduledTimerWithTimeInterval:_updateInterval repeats:YES block:^(NSTimer * _Nonnull timer) {
[SCIUpdateSuspender usingWithSuspendable:wSelf.surface withBlock:^{
[rSeries1 invalidateMetadata];
[rSeries2 invalidateMetadata];
}];
}];
#if TARGET_OS_OSX
if (_timer) {
[[NSRunLoop mainRunLoop] addTimer:_timer forMode:NSRunLoopCommonModes];
}
#endif
}
@end
SurfaceMeshWithMetaDataProvider3DChartView.swift
View source code//******************************************************************************
// SCICHART® Copyright SciChart Ltd. 2011-2019. All rights reserved.
//
// Web: http://www.scichart.com
// Support: support@scichart.com
// Sales: sales@scichart.com
//
// SurfaceMeshWithMetaDataProvider3DChartView.swift is part of the SCICHART® Examples. Permission is hereby granted
// to modify, create derivative works, distribute and publish any part of this source
// code whether for commercial, private or personal use.
//
// The SCICHART® examples are distributed in the hope that they will be useful, but
// without any warranty. It is provided "AS IS" without warranty of any kind, either
// expressed or implied.
//******************************************************************************
let Size = 49
class SurfaceMeshWithMetaDataProvider3DChartView: SCDSingleChartViewController<SCIChartSurface3D> {
override var associatedType: AnyClass { return SCIChartSurface3D.self }
let UpdateMeshesInterval = 0.01
var timer: Timer?
let meshDataSeries0 = SCIUniformGridDataSeries3D(xType: .double, yType: .double, zType: .double, xSize: Size, zSize: Size)
let meshDataSeries1 = SCIUniformGridDataSeries3D(xType: .double, yType: .double, zType: .double, xSize: Size, zSize: Size)
override func initExample() {
let xAxis = SCINumericAxis3D()
xAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
xAxis.drawMajorBands = false
xAxis.drawLabels = false
xAxis.drawMajorGridLines = false
xAxis.drawMajorTicks = false
xAxis.drawMinorGridLines = false
xAxis.drawMinorTicks = false
xAxis.planeBorderThickness = 0.0
let yAxis = SCINumericAxis3D()
yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
yAxis.drawMajorBands = false
yAxis.drawLabels = false
yAxis.drawMajorGridLines = false
yAxis.drawMajorTicks = false
yAxis.drawMinorGridLines = false
yAxis.drawMinorTicks = false
yAxis.planeBorderThickness = 0.0
yAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
let zAxis = SCINumericAxis3D()
zAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
zAxis.drawMajorBands = false
zAxis.drawLabels = false
zAxis.drawMajorGridLines = false
zAxis.drawMajorTicks = false
zAxis.drawMinorGridLines = false
zAxis.drawMinorTicks = false
zAxis.planeBorderThickness = 0.0
zAxis.growBy = SCIDoubleRange(min: 0.1, max: 0.1)
for x in (24...48).reversed() {
let y = pow(Double(x) - 23.7, 0.3)
let y2 = pow(49.5 - Double(x), 0.3)
meshDataSeries0.update(y: y, atX: x, z: 24)
meshDataSeries1.update(y: y2 - 1.505, atX: x, z: 24)
}
for x in (0...24).reversed() {
for z in (26...49).reversed() {
let y = pow(Double(z) - 23.7, 0.3)
let y2 = pow(50.5 - Double(z), 0.3) + 1.505
meshDataSeries0.update(y: y, atX: x + 24, z: 49 - z)
meshDataSeries0.update(y: y, atX: z - 1, z: 24 - x)
meshDataSeries1.update(y: y2, atX: x + 24, z: 49 - z)
meshDataSeries1.update(y: y2, atX: z - 1, z: 24 - x)
meshDataSeries0.update(y: y, atX: 24 - x, z: 49 - z)
meshDataSeries0.update(y: y, atX: 49 - z, z: 24 - x)
meshDataSeries1.update(y: y2, atX: 24 - x, z: 49 - z)
meshDataSeries1.update(y: y2, atX: 49 - z, z: 24 - x)
meshDataSeries0.update(y: y, atX: x + 24, z: z - 1)
meshDataSeries0.update(y: y, atX: z - 1, z: x + 24)
meshDataSeries1.update(y: y2, atX: x + 24, z: z - 1)
meshDataSeries1.update(y: y2, atX: z - 1, z: x + 24)
meshDataSeries0.update(y: y, atX: 24 - x, z: z - 1)
meshDataSeries0.update(y: y, atX: 49 - z, z: 24 + x)
meshDataSeries1.update(y: y2, atX: 24 - x, z: z - 1)
meshDataSeries1.update(y: y2, atX: 49 - z, z: 24 + x)
}
}
let colors: [UInt32] = [0xFF00008B, 0xFF0000FF, 0xFF5F9EA0, 0xFF00FFFF, 0xFF32CD32, 0xFFADFF2F, 0xFFFFFF00, 0xFFFF6347, 0xFFCD5C5C, 0xFFFF0000, 0xFF8B0000]
let stops: [Float] = [0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0]
let palette0 = SCIGradientColorPalette(colors: colors, stops: stops)
let palette1 = SCIGradientColorPalette(colors: colors, stops: stops)
let rSeries = SCISurfaceMeshRenderableSeries3D()
rSeries.dataSeries = meshDataSeries0
rSeries.drawMeshAs = .solidMesh
rSeries.drawSkirt = false
rSeries.meshColorPalette = palette0
rSeries.metadataProvider = SurfaceMeshMetaDataProvider3D()
let rSeries1 = SCISurfaceMeshRenderableSeries3D()
rSeries1.dataSeries = meshDataSeries1
rSeries1.drawMeshAs = .solidMesh
rSeries1.drawSkirt = false
rSeries1.meshColorPalette = palette1
rSeries1.metadataProvider = SurfaceMeshMetaDataProvider3D()
SCIUpdateSuspender.usingWith(surface) {
self.surface.xAxis = xAxis
self.surface.yAxis = yAxis
self.surface.zAxis = zAxis
self.surface.renderableSeries.add(items: rSeries, rSeries1)
self.surface.chartModifiers.add(SCDExampleBaseViewController.createDefaultModifiers3D())
}
timer = Timer.scheduledTimer(withTimeInterval: UpdateMeshesInterval, repeats: true, block: { [weak self] (timer) in
guard let sSurface = self?.surface else { return }
SCIUpdateSuspender.usingWith(sSurface) {
rSeries.invalidateMetadata()
rSeries1.invalidateMetadata()
}
})
#if os(OSX)
if let _timer = timer {
RunLoop.main.add(_timer, forMode: .common)
}
#endif
}
private class SurfaceMeshMetaDataProvider3D: SCIMetadataProvider3DBase<SCISurfaceMeshRenderableSeries3D>, ISCISurfaceMeshMetadataProvider3D {
init() {
super.init(renderableSeriesType: SCISurfaceMeshRenderableSeries3D.self)
}
func updateMeshColors(_ cellColors: SCIUnsignedIntegerValues) {
guard let currentRenderPassData = renderableSeries?.currentRenderPassData as? SCISurfaceMeshRenderPassData3D else {
return
}
let countX = currentRenderPassData.countX - 1
let countZ = currentRenderPassData.countZ - 1
cellColors.count = currentRenderPassData.pointsCount
for x in 0 ..< countX {
for z in 0 ..< countX {
let index = x * countZ + z;
var color: UInt32 = 0;
if ((x >= 20 && x <= 26 && z > 0 && z < 47) || (z >= 20 && z <= 26 && x > 0 && x < 47)) {
color = 0x00FFFFFF;
} else {
color = SCDDataManager.randomColor()
}
cellColors.set(color, at: index)
}
}
}
}
}
