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Adding comments to graph demo

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This commit is contained in:
Joel Bodenmann 2016-01-08 07:27:26 +01:00
parent 4b891ebc04
commit 6937cc3f0f
1 changed files with 67 additions and 60 deletions
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127
demos/modules/gwin/graph/main.c
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@ -30,75 +30,82 @@
#include "gfx.h" #include "gfx.h"
#include "math.h" #include "math.h"
// A set of data points that will be displayed in the graph
static const point data[5] = { static const point data[5] = {
{ -40, -40 }, { -40, -40 },
{ 70, 40 }, { 70, 40 },
{ 140, 60 }, { 140, 60 },
{ 210, 60 }, { 210, 60 },
{ 280, 200 } { 280, 200 }
}; };
static GGraphObject g; // A graph styling
static GGraphStyle GraphStyle1 = { static GGraphStyle GraphStyle1 = {
{ GGRAPH_POINT_DOT, 0, Blue }, // point { GGRAPH_POINT_DOT, 0, Blue }, // Point
{ GGRAPH_LINE_NONE, 2, Gray }, // line { GGRAPH_LINE_NONE, 2, Gray }, // Line
{ GGRAPH_LINE_SOLID, 0, White }, // x axis { GGRAPH_LINE_SOLID, 0, White }, // X axis
{ GGRAPH_LINE_SOLID, 0, White }, // y axis { GGRAPH_LINE_SOLID, 0, White }, // Y axis
{ GGRAPH_LINE_DASH, 5, Gray, 50 }, // x grid { GGRAPH_LINE_DASH, 5, Gray, 50 }, // X grid
{ GGRAPH_LINE_DOT, 7, Yellow, 50 }, // y grid { GGRAPH_LINE_DOT, 7, Yellow, 50 }, // Y grid
GWIN_GRAPH_STYLE_POSITIVE_AXIS_ARROWS // flags GWIN_GRAPH_STYLE_POSITIVE_AXIS_ARROWS // Flags
}; };
// Another graph styling
static const GGraphStyle GraphStyle2 = { static const GGraphStyle GraphStyle2 = {
{ GGRAPH_POINT_SQUARE, 5, Red }, // point { GGRAPH_POINT_SQUARE, 5, Red }, // Point
{ GGRAPH_LINE_DOT, 2, Pink }, // line { GGRAPH_LINE_DOT, 2, Pink }, // Line
{ GGRAPH_LINE_SOLID, 0, White }, // x axis { GGRAPH_LINE_SOLID, 0, White }, // X axis
{ GGRAPH_LINE_SOLID, 0, White }, // y axis { GGRAPH_LINE_SOLID, 0, White }, // Y axis
{ GGRAPH_LINE_DASH, 5, Gray, 50 }, // x grid { GGRAPH_LINE_DASH, 5, Gray, 50 }, // X grid
{ GGRAPH_LINE_DOT, 7, Yellow, 50 }, // y grid { GGRAPH_LINE_DOT, 7, Yellow, 50 }, // Y grid
GWIN_GRAPH_STYLE_POSITIVE_AXIS_ARROWS // flags GWIN_GRAPH_STYLE_POSITIVE_AXIS_ARROWS // Flags
}; };
int main(void) { int main(void) {
GHandle gh; GHandle gh;
uint16_t i; uint16_t i;
gfxInit(); gfxInit();
{ // Create the graph window
GWindowInit wi; {
GWindowInit wi;
wi.show = TRUE;
wi.x = wi.y = 0;
wi.width = gdispGetWidth();
wi.height = gdispGetHeight();
gh = gwinGraphCreate(0, &wi);
}
// Set the graph origin and style
gwinGraphSetOrigin(gh, gwinGetWidth(gh)/2, gwinGetHeight(gh)/2);
gwinGraphSetStyle(gh, &GraphStyle1);
gwinGraphDrawAxis(gh);
// Draw a sine wave
for(i = 0; i < gwinGetWidth(gh); i++) {
gwinGraphDrawPoint(gh, i-gwinGetWidth(gh)/2, 80*sin(2*0.2*M_PI*i/180));
}
// Modify the style
gwinGraphStartSet(gh);
GraphStyle1.point.color = Green;
gwinGraphSetStyle(gh, &GraphStyle1);
// Draw a different sine wave
for(i = 0; i < gwinGetWidth(gh)*5; i++) {
gwinGraphDrawPoint(gh, i/5-gwinGetWidth(gh)/2, 95*sin(2*0.2*M_PI*i/180));
}
gwinClearInit(&wi); // Change to a completely different style
wi.show = TRUE; gwinGraphStartSet(gh);
wi.x = wi.y = 0; gwinGraphSetStyle(gh, &GraphStyle2);
wi.width = gdispGetWidth();
wi.height = gdispGetHeight();
gh = gwinGraphCreate(&g, &wi);
}
gwinGraphSetOrigin(gh, gwinGetWidth(gh)/2, gwinGetHeight(gh)/2); // Draw a set of points
gwinGraphSetStyle(gh, &GraphStyle1); gwinGraphDrawPoints(gh, data, sizeof(data)/sizeof(data[0]));
gwinGraphDrawAxis(gh);
while(TRUE) {
for(i = 0; i < gwinGetWidth(gh); i++) gfxSleepMilliseconds(100);
gwinGraphDrawPoint(gh, i-gwinGetWidth(gh)/2, 80*fsin(2*i/5)); //sin(2*0.2*GFX_PI*i/180)); }
gwinGraphStartSet(gh);
GraphStyle1.point.color = Green;
gwinGraphSetStyle(gh, &GraphStyle1);
for(i = 0; i < gwinGetWidth(gh)*5; i++)
gwinGraphDrawPoint(gh, i/5-gwinGetWidth(gh)/2, 95*fsin(2*i/5)); //sin(2*0.2*GFX_PI*i/180));
gwinGraphStartSet(gh);
gwinGraphSetStyle(gh, &GraphStyle2);
gwinGraphDrawPoints(gh, data, sizeof(data)/sizeof(data[0]));
while(TRUE) {
gfxSleepMilliseconds(100);
}
} }