156 lines
3.1 KiB
C
156 lines
3.1 KiB
C
#include "mcompass.h"
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#include <Mw/Widget/OpenGL.h>
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MwWidget window, opengl;
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int ww, wh;
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static void resize(MwWidget handle, void* user, void* client){
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ww = MwGetInteger(window, MwNwidth);
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wh = MwGetInteger(window, MwNheight);
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MwVaApply(opengl,
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MwNwidth, ww,
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MwNheight, wh,
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NULL);
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glViewport(0, 0, ww, wh);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrtho(-1, 1, -1, 1, -1, 1);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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}
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static void tick(MwWidget handle, void* user, void* client){
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int i;
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double rad;
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int cx, cy;
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MwPoint p;
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cx = MwGetInteger(window, MwNx) + ww / 2;
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cy = MwGetInteger(window, MwNy) + wh / 2;
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MwGetCursorCoord(window, &p);
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glClear(GL_COLOR_BUFFER_BIT);
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glColor3f(0, 0, 0);
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for(i = 0; i < 360; i += 10){
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rad = i / 180.0 * M_PI;
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glBegin(GL_LINES);
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glVertex2f(cos(rad), sin(rad));
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glVertex2f(cos(rad)*0.9, sin(rad)*0.9);
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glEnd();
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}
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glBegin(GL_LINES);
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glVertex2f(-0.6, 0);
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glVertex2f(0.6, 0);
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glVertex2f(0, -0.6);
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glVertex2f(0, 0.6);
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glEnd();
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glBegin(GL_LINE_STRIP);
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for(i = 0; i <= 360; i += 10){
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rad = i / 180.0 * M_PI;
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glVertex2f(cos(rad)*0.2, sin(rad)*0.2);
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}
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glEnd();
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/* memo: size is 0.2x0.2 */
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glLineWidth(2);
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glColor3f(1, 0, 0);
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glBegin(GL_LINE_STRIP); /* N */
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glVertex2f(-0.1, 0.65);
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glVertex2f(-0.1, 0.85);
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glVertex2f(0.1, 0.65);
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glVertex2f(0.1, 0.85);
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glEnd();
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glColor3f(0, 0, 0);
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glBegin(GL_LINE_STRIP); /* W */
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glVertex2f(-0.85, -0.1);
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glVertex2f(-0.65, -0.05);
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glVertex2f(-0.85, 0);
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glVertex2f(-0.65, 0.05);
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glVertex2f(-0.85, 0.1);
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glEnd();
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glBegin(GL_LINE_STRIP); /* S */
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glVertex2f(-0.1, -0.85);
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glVertex2f(0.1, -0.85);
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glVertex2f(0.1, -0.75);
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glVertex2f(-0.1, -0.75);
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glVertex2f(-0.1, -0.65);
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glVertex2f(0.1, -0.65);
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glEnd();
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glBegin(GL_LINE_STRIP); /* E */
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glVertex2f(0.85, -0.1);
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glVertex2f(0.85, 0.1);
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glVertex2f(0.65, 0.1);
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glVertex2f(0.65, -0.1);
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glEnd();
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glBegin(GL_LINES);
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glVertex2f(0.75, -0.1);
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glVertex2f(0.75, 0.1);
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glEnd();
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glLineWidth(1);
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rad = atan2(-(p.y-cy),p.x-cx);
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for(i = 0; i < 2; i++){
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double n = 90 / 180.0 * M_PI;
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if(i == 0){
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glColor3f(1, 0, 0);
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}else{
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glColor3f(0.2, 0.2, 0.2);
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}
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glBegin(GL_TRIANGLES);
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glVertex2f(cos(rad)*0.95, sin(rad)*0.95);
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glVertex2f(cos(rad-n)*0.05, sin(rad-n)*0.05);
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glVertex2f(cos(rad+n)*0.05, sin(rad+n)*0.05);
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glEnd();
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rad-= n * 2;
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}
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glColor3f(0.6, 0.6, 0.6);
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glBegin(GL_TRIANGLE_FAN);
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for(i = 0; i <= 360; i += 10){
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rad = i / 180.0 * M_PI;
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glVertex2f(cos(rad)*0.05*2/3, sin(rad)*0.05*2/3);
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}
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glEnd();
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MwOpenGLSwapBuffer(opengl);
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}
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int main(){
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MwLLColor col;
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int r, g, b;
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MwLibraryInit();
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window = MwVaCreateWidget(MwWindowClass, "main", NULL, MwDEFAULT, MwDEFAULT, 150, 150,
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MwNtitle, "mcompass",
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NULL);
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opengl = MwCreateWidget(MwOpenGLClass, "opengl", window, 0, 0, 150, 150);
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MwOpenGLMakeCurrent(opengl);
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col = MwParseColor(window, MwGetText(window, MwNbackground));
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MwGetColor(col, &r, &g, &b);
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MwLLFreeColor(col);
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glClearColor(r / 255.0, g / 255.0, b / 255.0, 1);
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resize(window, NULL, NULL);
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MwAddUserHandler(window, MwNresizeHandler, resize, NULL);
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MwAddUserHandler(window, MwNtickHandler, tick, NULL);
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MwLoop(window);
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}
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